In this HackerRank Counting Road Networks problem solution, You must answer Q queries, where each query consists of some N denoting the number of cities Lukas wants to design a bidirectional network of roads for. For each query, find and print the number of ways he can build roads connecting n cities on a new line; as the number of ways can be quite large, print it modulo 663224321.
Problem solution in Java.
import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.InputMismatchException; public class E2 { InputStream is; PrintWriter out; String INPUT = ""; void solve() { int n = 100005; long[] a = new long[n]; int mod = 663224321; for(int i = 0;i < n;i++){ a[i] = pow(2, (long)i*(i-1)/2, mod); } int[][] fif = enumFIF(100005, mod); long[] ta = transformLogarithmically(a, fif); for(int Q = ni();Q > 0;Q--){ out.println(ta[ni()]); } } public static int[][] enumFIF(int n, int mod) { int[] f = new int[n + 1]; int[] invf = new int[n + 1]; f[0] = 1; for (int i = 1; i <= n; i++) { f[i] = (int) ((long) f[i - 1] * i % mod); } long a = f[n]; long b = mod; long p = 1, q = 0; while (b > 0) { long c = a / b; long d; d = a; a = b; b = d % b; d = p; p = q; q = d - c * q; } invf[n] = (int) (p < 0 ? p + mod : p); for (int i = n - 1; i >= 0; i--) { invf[i] = (int) ((long) invf[i + 1] * (i + 1) % mod); } return new int[][] { f, invf }; } public static long pow(long a, long n, long mod) { long ret = 1; int x = 63 - Long.numberOfLeadingZeros(n); for (; x >= 0; x--) { ret = ret * ret % mod; if (n << 63 - x < 0) ret = ret * a % mod; } return ret; } public static int mod = 663224321; public static int G = 3; public static long[] mul(long[] a, long[] b) { return Arrays.copyOf(convoluteSimply(a, b, mod, G), a.length+b.length-1); } public static long[] mul(long[] a, long[] b, int lim) { return Arrays.copyOf(convoluteSimply(a, b, mod, G), lim); } public static long[] mulnaive(long[] a, long[] b) { long[] c = new long[a.length+b.length-1]; long big = 8L*mod*mod; for(int i = 0;i < a.length;i++){ for(int j = 0;j < b.length;j++){ c[i+j] += a[i]*b[j]; if(c[i+j] >= big)c[i+j] -= big; } } for(int i = 0;i < c.length;i++)c[i] %= mod; return c; } public static long[] mulnaive(long[] a, long[] b, int lim) { long[] c = new long[lim]; long big = 8L*mod*mod; for(int i = 0;i < a.length;i++){ for(int j = 0;j < b.length && i+j < lim;j++){ c[i+j] += a[i]*b[j]; if(c[i+j] >= big)c[i+j] -= big; } } for(int i = 0;i < c.length;i++)c[i] %= mod; return c; } public static long[] add(long[] a, long[] b) { long[] c = new long[Math.max(a.length, b.length)]; for(int i = 0;i < a.length;i++)c[i] += a[i]; for(int i = 0;i < b.length;i++)c[i] += b[i]; for(int i = 0;i < c.length;i++)if(c[i] >= mod)c[i] -= mod; return c; } public static long[] add(long[] a, long[] b, int lim) { long[] c = new long[lim]; for(int i = 0;i < a.length && i < lim;i++)c[i] += a[i]; for(int i = 0;i < b.length && i < lim;i++)c[i] += b[i]; for(int i = 0;i < c.length;i++)if(c[i] >= mod)c[i] -= mod; return c; } public static long[] sub(long[] a, long[] b) { long[] c = new long[Math.max(a.length, b.length)]; for(int i = 0;i < a.length;i++)c[i] += a[i]; for(int i = 0;i < b.length;i++)c[i] -= b[i]; for(int i = 0;i < c.length;i++)if(c[i] < 0)c[i] += mod; return c; } public static long[] sub(long[] a, long[] b, int lim) { long[] c = new long[lim]; for(int i = 0;i < a.length && i < lim;i++)c[i] += a[i]; for(int i = 0;i < b.length && i < lim;i++)c[i] -= b[i]; for(int i = 0;i < c.length;i++)if(c[i] < 0)c[i] += mod; return c; } public static long[] inv(long[] p) { int n = p.length; long[] f = {invl(p[0], mod)}; for(int i = 0;i < p.length;i++){ if(p[i] == 0)continue; p[i] = mod-p[i]; } for(int i = 1;i < 2*n;i*=2){ long[] f2 = mul(f, f, Math.min(n, 2*i)); long[] f2p = mul(f2, Arrays.copyOf(p, i), Math.min(n, 2*i)); for(int j = 0;j < f.length;j++){ f2p[j] += 2L*f[j]; if(f2p[j] >= mod)f2p[j] -= mod; if(f2p[j] >= mod)f2p[j] -= mod; } f = f2p; } for(int i = 0;i < p.length;i++){ if(p[i] == 0)continue; p[i] = mod-p[i]; } return f; } public static long[] d(long[] p) { long[] q = new long[p.length]; for(int i = 0;i < p.length-1;i++){ q[i] = p[i+1] * (i+1) % mod; } return q; } public static long[] i(long[] p) { long[] q = new long[p.length]; for(int i = 0;i < p.length-1;i++){ q[i+1] = p[i] * invl(i+1, mod) % mod; } return q; } public static long[] exp(long[] p) { int n = p.length; long[] f = {p[0]}; for(int i = 1;i < 2*n;i*=2){ long[] ii = ln(f); long[] sub = sub(ii, p, Math.min(n, 2*i)); if(--sub[0] < 0)sub[0] += mod; for(int j = 0;j < 2*i && j < n;j++){ sub[j] = mod-sub[j]; if(sub[j] == mod)sub[j] = 0; } f = mul(sub, f, Math.min(n, 2*i)); } return f; } public static long[] ln(long[] f) { long[] ret = i(mul(d(f), inv(f))); ret[0] = f[0]; return ret; } public static long[] pow(long[] p, int K) { int n = p.length; long[] lnp = ln(p); for(int i = 1;i < lnp.length;i++)lnp[i] = lnp[i] * K % mod; lnp[0] = pow(p[0], K, mod); // go well for some reason return exp(Arrays.copyOf(lnp, n)); } public static long[] divf(long[] a, int[][] fif) { for(int i = 0;i < a.length;i++)a[i] = a[i] * fif[1][i] % mod; return a; } public static long[] mulf(long[] a, int[][] fif) { for(int i = 0;i < a.length;i++)a[i] = a[i] * fif[0][i] % mod; return a; } public static long[] transformExponentially(long[] a, int[][] fif) { return mulf(exp(divf(Arrays.copyOf(a, a.length), fif)), fif); } public static long[] transformLogarithmically(long[] a, int[][] fif) { return mulf(Arrays.copyOf(ln(divf(Arrays.copyOf(a, a.length), fif)), a.length), fif); } public static long invl(long a, long mod) { long b = mod; long p = 1, q = 0; while (b > 0) { long c = a / b; long d; d = a; a = b; b = d % b; d = p; p = q; q = d - c * q; } return p < 0 ? p + mod : p; } public static long[] reverse(long[] p) { long[] ret = new long[p.length]; for(int i = 0;i < p.length;i++){ ret[i] = p[p.length-1-i]; } return ret; } public static long[] reverse(long[] p, int lim) { long[] ret = new long[lim]; for(int i = 0;i < lim && i < p.length;i++){ ret[i] = p[p.length-1-i]; } return ret; } public static long[][] div(long[] p, long[] q) { if(p.length < q.length)return new long[][]{new long[0], Arrays.copyOf(p, p.length)}; long[] rp = reverse(p, p.length-q.length+1); long[] rq = reverse(q, p.length-q.length+1); long[] rd = mul(rp, inv(rq), p.length-q.length+1); long[] d = reverse(rd, p.length-q.length+1); long[] r = sub(p, mul(d, q, q.length-1), q.length-1); return new long[][]{d, r}; } public static long[] substitute(long[] p, long[] xs) { return descendProductTree(p, buildProductTree(xs)); } public static long[][] buildProductTree(long[] xs) { int m = Integer.highestOneBit(xs.length)*4; long[][] ms = new long[m][]; for(int i = 0;i < xs.length;i++){ ms[m/2+i] = new long[]{mod-xs[i], 1}; } for(int i = m/2-1;i >= 1;i--){ if(ms[2*i] == null){ ms[i] = null; }else if(ms[2*i+1] == null){ ms[i] = ms[2*i]; }else{ ms[i] = mul(ms[2*i], ms[2*i+1]); } } return ms; } public static long[] descendProductTree(long[] p, long[][] pt) { long[] rets = new long[pt[1].length-1]; dfs(p, pt, 1, rets); return rets; } private static void dfs(long[] p, long[][] pt, int cur, long[] rets) { if(pt[cur] == null)return; if(cur >= pt.length/2){ rets[cur-pt.length/2] = p[0]; }else{ if(p.length >= 1500){ if(pt[2*cur+1] != null){ long[][] qr0 = div(p, pt[2*cur]); dfs(qr0[1], pt, cur*2, rets); long[][] qr1 = div(p, pt[2*cur+1]); dfs(qr1[1], pt, cur*2+1, rets); }else if(pt[2*cur] != null){ long[] nex = cur == 1 ? div(p, pt[2*cur])[1] : p; dfs(nex, pt, cur*2, rets); } }else{ if(pt[2*cur+1] != null){ dfs(modnaive(p, pt[2*cur]), pt, cur*2, rets); dfs(modnaive(p, pt[2*cur+1]), pt, cur*2+1, rets); }else if(pt[2*cur] != null){ long[] nex = cur == 1 ? modnaive(p, pt[2*cur]) : p; dfs(nex, pt, cur*2, rets); } } } } public static long[][] divnaive(long[] a, long[] b) { int n = a.length, m = b.length; if(n-m+1 <= 0)return new long[][]{new long[0], Arrays.copyOf(a, n)}; long[] r = Arrays.copyOf(a, n); long[] q = new long[n-m+1]; long ib = invl(b[m-1], mod); for(int i = n-1;i >= m-1;i--){ long x = ib * r[i] % mod; q[i-(m-1)] = x; for(int j = m-1;j >= 0;j--){ r[i+j-(m-1)] -= b[j]*x; r[i+j-(m-1)] %= mod; if(r[i+j-(m-1)] < 0)r[i+j-(m-1)] += mod; } } return new long[][]{q, Arrays.copyOf(r, m-1)}; } public static long[] modnaive(long[] a, long[] b) { int n = a.length, m = b.length; if(n-m+1 <= 0)return a; long[] r = Arrays.copyOf(a, n); long ib = invl(b[m-1], mod); for(int i = n-1;i >= m-1;i--){ long x = ib * r[i] % mod; for(int j = m-1;j >= 0;j--){ r[i+j-(m-1)] -= b[j]*x; r[i+j-(m-1)] %= mod; if(r[i+j-(m-1)] < 0)r[i+j-(m-1)] += mod; } } return Arrays.copyOf(r, m-1); } public static final int[] NTTPrimes = {1053818881, 1051721729, 1045430273, 1012924417, 1007681537, 1004535809, 998244353, 985661441, 976224257, 975175681}; public static final int[] NTTPrimitiveRoots = {7, 6, 3, 5, 3, 3, 3, 3, 3, 17}; public static long[] convoluteSimply(long[] a, long[] b, int P, int g) { int m = Math.max(2, Integer.highestOneBit(Math.max(a.length, b.length)-1)<<2); long[] fa = nttmb(a, m, false, P, g); long[] fb = a == b ? fa : nttmb(b, m, false, P, g); for(int i = 0;i < m;i++){ fa[i] = fa[i]*fb[i]%P; } return nttmb(fa, m, true, P, g); } public static long[] convolute(long[] a, long[] b) { int USE = 2; int m = Math.max(2, Integer.highestOneBit(Math.max(a.length, b.length)-1)<<2); long[][] fs = new long[USE][]; for(int k = 0;k < USE;k++){ int P = NTTPrimes[k], g = NTTPrimitiveRoots[k]; long[] fa = nttmb(a, m, false, P, g); long[] fb = a == b ? fa : nttmb(b, m, false, P, g); for(int i = 0;i < m;i++){ fa[i] = fa[i]*fb[i]%P; } fs[k] = nttmb(fa, m, true, P, g); } int[] mods = Arrays.copyOf(NTTPrimes, USE); long[] gammas = garnerPrepare(mods); int[] buf = new int[USE]; for(int i = 0;i < fs[0].length;i++){ for(int j = 0;j < USE;j++)buf[j] = (int)fs[j][i]; long[] res = garnerBatch(buf, mods, gammas); long ret = 0; for(int j = res.length-1;j >= 0;j--)ret = ret * mods[j] + res[j]; fs[0][i] = ret; } return fs[0]; } public static long[] convolute(long[] a, long[] b, int USE, int mod) { int m = Math.max(2, Integer.highestOneBit(Math.max(a.length, b.length)-1)<<2); long[][] fs = new long[USE][]; for(int k = 0;k < USE;k++){ int P = NTTPrimes[k], g = NTTPrimitiveRoots[k]; long[] fa = nttmb(a, m, false, P, g); long[] fb = a == b ? fa : nttmb(b, m, false, P, g); for(int i = 0;i < m;i++){ fa[i] = fa[i]*fb[i]%P; } fs[k] = nttmb(fa, m, true, P, g); } int[] mods = Arrays.copyOf(NTTPrimes, USE); long[] gammas = garnerPrepare(mods); int[] buf = new int[USE]; for(int i = 0;i < fs[0].length;i++){ for(int j = 0;j < USE;j++)buf[j] = (int)fs[j][i]; long[] res = garnerBatch(buf, mods, gammas); long ret = 0; for(int j = res.length-1;j >= 0;j--)ret = (ret * mods[j] + res[j]) % mod; fs[0][i] = ret; } return fs[0]; } private static long[] nttmb(long[] src, int n, boolean inverse, int P, int g) { long[] dst = Arrays.copyOf(src, n); int h = Integer.numberOfTrailingZeros(n); long K = Integer.highestOneBit(P)<<1; int H = Long.numberOfTrailingZeros(K)*2; long M = K*K/P; int[] wws = new int[1<<h-1]; long dw = inverse ? pow(g, P-1-(P-1)/n, P) : pow(g, (P-1)/n, P); long w = (1L<<32)%P; for(int k = 0;k < 1<<h-1;k++){ wws[k] = (int)w; w = modh(w*dw, M, H, P); } long J = invl(P, 1L<<32); for(int i = 0;i < h;i++){ for(int j = 0;j < 1<<i;j++){ for(int k = 0, s = j<<h-i, t = s|1<<h-i-1;k < 1<<h-i-1;k++,s++,t++){ long u = (dst[s] - dst[t] + 2*P)*wws[k]; dst[s] += dst[t]; if(dst[s] >= 2*P)dst[s] -= 2*P; // long Q = (u&(1L<<32)-1)*J&(1L<<32)-1; long Q = (u<<32)*J>>>32; dst[t] = (u>>>32)-(Q*P>>>32)+P; } } if(i < h-1){ for(int k = 0;k < 1<<h-i-2;k++)wws[k] = wws[k*2]; } } for(int i = 0;i < n;i++){ if(dst[i] >= P)dst[i] -= P; } for(int i = 0;i < n;i++){ int rev = Integer.reverse(i)>>>-h; if(i < rev){ long d = dst[i]; dst[i] = dst[rev]; dst[rev] = d; } } if(inverse){ long in = invl(n, P); for(int i = 0;i < n;i++)dst[i] = modh(dst[i]*in, M, H, P); } return dst; } static final long mask = (1L<<31)-1; public static long modh(long a, long M, int h, int mod) { long r = a-((M*(a&mask)>>>31)+M*(a>>>31)>>>h-31)*mod; return r < mod ? r : r-mod; } private static long[] garnerPrepare(int[] m) { int n = m.length; assert n == m.length; if(n == 0)return new long[0]; long[] gamma = new long[n]; for(int k = 1;k < n;k++){ long prod = 1; for(int i = 0;i < k;i++){ prod = prod * m[i] % m[k]; } gamma[k] = invl(prod, m[k]); } return gamma; } private static long[] garnerBatch(int[] u, int[] m, long[] gamma) { int n = u.length; assert n == m.length; long[] v = new long[n]; v[0] = u[0]; for(int k = 1;k < n;k++){ long temp = v[k-1]; for(int j = k-2;j >= 0;j--){ temp = (temp * m[j] + v[j]) % m[k]; } v[k] = (u[k] - temp) * gamma[k] % m[k]; if(v[k] < 0)v[k] += m[k]; } return v; } void run() throws Exception { is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes()); out = new PrintWriter(System.out); long s = System.currentTimeMillis(); solve(); out.flush(); if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms"); } public static void main(String[] args) throws Exception { new E2().run(); } private byte[] inbuf = new byte[1024]; public int lenbuf = 0, ptrbuf = 0; private int readByte() { if(lenbuf == -1)throw new InputMismatchException(); if(ptrbuf >= lenbuf){ ptrbuf = 0; try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); } if(lenbuf <= 0)return -1; } return inbuf[ptrbuf++]; } private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); } private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; } private double nd() { return Double.parseDouble(ns()); } private char nc() { return (char)skip(); } private String ns() { int b = skip(); StringBuilder sb = new StringBuilder(); while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ') sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } private char[] ns(int n) { char[] buf = new char[n]; int b = skip(), p = 0; while(p < n && !(isSpaceChar(b))){ buf[p++] = (char)b; b = readByte(); } return n == p ? buf : Arrays.copyOf(buf, p); } private char[][] nm(int n, int m) { char[][] map = new char[n][]; for(int i = 0;i < n;i++)map[i] = ns(m); return map; } private int[] na(int n) { int[] a = new int[n]; for(int i = 0;i < n;i++)a[i] = ni(); return a; } private int ni() { int num = 0, b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private long nl() { long num = 0; int b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); } }
Problem solution in C++.
#include <bits/stdc++.h> using namespace std; const int MAXN = 300005; const int root = 1489; const int root_1 = 296201594; const int root_pw = (1<<19); const long long int MOD = 663224321; long long int fact[MAXN], invfact[MAXN], pow2[MAXN], all_graphs[MAXN], poly1[MAXN], poly2[MAXN]; long long int power(long long int a, int b) { if(!b) return 1; long long int ans = power(a,b/2); ans = (ans*ans)%MOD; if(b%2) ans = (ans*a)%MOD; return ans; } void fft (vector<long long int> &a, bool invert) { int n = (int) a.size(); for (int i = 1, j = 0; i < n; ++i) { int bit = n >> 1; for (; j >= bit; bit>>=1) j-=bit; j+=bit; if(i < j) swap(a[i], a[j]); } for (int len = 2; len <= n; len<<=1) { long long int wlen = invert ? root_1 : root; for (int i = len; i < root_pw; i<<=1) wlen = (wlen*wlen)%MOD; for (int i = 0; i < n; i+=len) { long long int w = 1; for (int j = 0; j < len/2; ++j) { int u = a[i+j], v = (a[i+j+len/2]*w)%MOD; a[i+j] = u+v < MOD ? u+v : u+v-MOD; a[i+j+len/2] = u-v >= 0 ? u-v : u-v+MOD; w = (w*wlen)%MOD; } } } if(invert) { int nrev = power(n, MOD-2); for (int i=0; i<n; ++i) a[i] = (a[i]*nrev)%MOD; } } void multiply(vector <long long int> &a, vector <long long int> &b, vector <long long int> &c) { vector <long long int> ta(a.begin(), a.end()), tb(b.begin(), b.end()), tc; int sz = 2*a.size(); ta.resize(sz); tb.resize(sz); fft(ta,false); fft(tb,false); for (int i = 0; i < sz; ++i) { ta[i] = (1ll*ta[i]*tb[i])%MOD; } fft(ta,true); c = ta; } void dnc(int l, int r) { if(l+1 == r) { poly2[l] = (all_graphs[l]*invfact[l-1] + MOD - poly2[l])%MOD; } else { int m = (l + r)/2; dnc(l,m); dnc(m,r); } vector <long long int> p1, p2, ans; int sz = r - l; for (int i = sz; i < 2*sz; ++i) { p1.push_back(poly1[i]); } for (int i = l; i < r; ++i) { p2.push_back(poly2[i]); } multiply(p1,p2,ans); for (int i = 0; i < ans.size(); ++i) { int pos = l + sz + i; poly2[pos] = (poly2[pos] + ans[i])%MOD; } } int main() { fact[0] = invfact[0] = pow2[0] = all_graphs[0] = 1; for (int i = 1; i < MAXN; ++i) { fact[i] = (fact[i-1]*i)%MOD; invfact[i] = power(fact[i], MOD-2); pow2[i] = (pow2[i-1]*2)%MOD; all_graphs[i] = (all_graphs[i-1]*pow2[i-1])%MOD; poly1[i] = (all_graphs[i]*invfact[i])%MOD; } dnc(1,(1<<17)+1); int t; cin>>t; while(t--) { int x; cin>>x; cout<<(poly2[x]*fact[x-1])%MOD<<"n"; } return 0; }
Problem solution in C.
#include<stdio.h> #define MAX_N 150000 #define MODULE 663224321 static long long f[MAX_N]; static long long g[MAX_N]; static long long factorial_inverse[MAX_N]; static long long factorial[MAX_N]; static long long x1[MAX_N]; static long long x2[MAX_N]; static long long y[MAX_N]; long long power(long long x, long long n) { long long res = 1; for( ; n ; n >>= 1, x = x * x % MODULE ) { if( n & 1 ) { res = ( res * x ) % MODULE; } } return res; } void Run(long long *x, long long n, long long rev) { for( long long i = 1, j, k, t ; i < n ; ++i ) { for( j = 0, t = i, k = n >> 1 ; k ; t >>= 1, k >>= 1 ) { j = j << 1 | t & 1; } if( i < j ) { long long tmp = x[i]; x[i] = x[j]; x[j] = tmp; } } for( long long s = 2, ds = 1 ; s <= n ; ds = s, s <<= 1 ) { long long wn = power(3, (MODULE - 1) / s); if( rev < 0 ) { wn = power(wn, MODULE - 2); } for( long long k = 0 ; k < n ; k += s ) { long long w = 1, t; for( long long i = k ; i < k + ds ; ++ i, w = w * wn % MODULE ) { x[i+ds] = ( x[i] - ( t = w * x[i+ds] % MODULE ) + MODULE ) % MODULE; x[i] = ( x[i] + t ) % MODULE; } } } if( rev < 0 ) { long long invn = power(n, MODULE - 2); for( long long i = 0 ; i < n ; ++i ) { x[i] = x[i] * invn % MODULE; } } } void divide_conquer(long long left, long long right) { if( left == right ) { return; } long long mid = ( left + right ) / 2; divide_conquer(left, mid); long long n1; for( n1 = 1 ; n1 <= right - left ; n1 <<= 1 ); for( long long i = 0 ; i < n1 ; ++i ) { x1[i] = ( i + left <= mid ) ? f[i+left] * factorial_inverse[i+left-1] % MODULE : 0; x2[i] = (i + left <= right) ? factorial_inverse[i+1] * g[i+1] % MODULE : 0; } Run(x1, n1, 1); Run(x2, n1, 1); for( long long i = 0 ; i < n1 ; ++i ) { y[i] = x1[i] * x2[i] % MODULE; } Run(y, n1, -1); for( long long i = mid + 1 ; i <= right ; ++i ) { f[i] = ( f[i] - ( factorial[i-1] * y[i-left-1] % MODULE ) + MODULE ) % MODULE; } divide_conquer(mid + 1, right); } void initialize() { factorial[0] = 1; factorial_inverse[0] = 1; for( long long i = 1 ; i < MAX_N ; ++i ) { factorial[i] = ( factorial[i-1] * i ) % MODULE; factorial_inverse[i] = power(factorial[i], MODULE - 2); g[i] = power(2, (long long)i * (long long)(i - 1) / 2); f[i] = g[i]; } divide_conquer(1, 100000); } int main() { int q, n; initialize(); scanf("%d", &q); for( long long i = 0 ; i < q ; ++i ) { scanf("%d", &n); printf("%lldn", f[n]); } return 0; }