HackerEarth Monk in the real estate problem solution YASH PAL, 31 July 202411 February 2026 In this HackerEarth Monk in the real estate problem solution, The Monk wants to buy some cities. To buy two cities, he needs to buy the road connecting those two cities. Now, you are given a list of roads, bought by the Monk. You need to tell how many cities did the Monk buy.HackerEarth Monk in the real estate problem solution.#include <iostream>#include <cassert>using namespace std;const int MAX = 1e4 + 5;bool visited[MAX];int main(){ int edges, x, y, testcases, nodes; cin >> testcases; assert(1 <= testcases and testcases <= 100); while(testcases--) { cin >> edges; assert(1 <= edges and edges <= 1000); for(int i = 0;i < edges;++i) { cin >> x >> y; assert(1 <= x and x <= 10000); assert(1 <= y and y <= 10000); visited[x] = true; visited[y] = true; } nodes = 0; for(int i = 0;i < MAX;++i) if(visited[i]) { visited[i] = false; nodes++; } cout << nodes << endl; } return 0;}Second solutiontc = int(raw_input())assert(tc>0 and tc<101)while tc>0: tc = tc - 1 n = int(raw_input()) assert(n>0 and n<1001) visited = [False]*10013 for i in xrange(n): a, b = map(int, raw_input().split()) assert(a>0 and a<10001) assert(b>0 and b<10001) visited[a] = True visited[b] = True nodes = 0 for i in xrange(10013): if visited[i]: visited[i] = False nodes += 1 print nodes coding problems solutions HackerEarth HackerEarth