exponenciacion binaria
#include<bits/stdc++.h>
using namespace std;
typedef unsigned long long ull;
//complexity O(log k)
ull po(ull n,ull k){
ull x=1;
while(k){
if(k&1)
x*=n;
n*=n;
k>>=1;
}
return x;
}
int main(){
ull n,m;
//n^m
cin>>n>>m;
cout<<po(n,m);
return 0;
}Copyright © 2021 Codeinu
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