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HackerEarth Recursive Function problem solution

YASH PAL, 31 July 2024
In this HackerEarth Recursive Function problem solution Implement the recursive function given by the following rules and print the last 3 digits:
F(x, y) = {
y + 1 when x = 0,
F(x – 1, 1) when x > 0 and y = 0,
F(x – 1, F(x, y – 1)) when x > 0 and y > 0
}
HackerEarth Recursive Function problem solution

HackerEarth Recursive Function problem solution.

#include <iostream>
#include<bits/stdc++.h>

#include<cstdio>
#include<sstream>

using namespace std;

int f(long long int x, long long int y) {

x%=1000;
y%=1000;
if(x==0) return y+1;
else if(x>0 && y==0) return f(x-1,1);
else if(x>0 && y>0) return f(x-1,f(x,y-1));

}

int result(long long int x, long long int y)

{

long long int ans = f(x,y);
return ans % 1000;
}
int main() {
int x,y;

cin>>x>>y;

int z = result(x,y);
cout<<z;
return 0;

}
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