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Hard Compare — Exponential

Revision en1, by dificilcoder, 2021-03-22 10:44:15

How to arrive at the correct solution which solves for large input values?

Problem : Hard Compare...

Question

Given 4 numbers A,B,C and D. If AB > CD, print "YES" otherwise, print "NO".

Input
Only one line containing 4 numbers A,B,C and D (1≤A,C≤107) , (1≤B,D≤1012)

Output
Print "YES" or "NO" according to the problem above.

My Program

    #include <iostream>
#define ll long long
using namespace std;

int main(){

ll res1, res2, a, b, c, d;
cin>>a>>b>>c>>d;
res1 = 1;
res2 = 1;
for(int i=1;i<=b; i++){
res1 = a % ((int)1e9+7) *  res1 % ((int)1e9+7);
}
for(int i=1;i<=d; i++){
res2 = c % ((int)1e9+7) *  res2 % ((int)1e9+7);
}

cout<<(res1>res2 ? "YES" : "NO");
return 0;
}


TestCases

Input : 2887969 614604076030 8478041 209676100616

Input : 8376260 70 8376259 70

Input : 2 1 1 1

Input : 1 7816997 1 1

Issue with current program : I am not able to solve for large input values

#### History

Revisions

Rev. Lang. By When Δ Comment
en1 dificilcoder 2021-03-22 10:44:15 1315 Initial revision (published)