Cod sursa(job #2738995)

Utilizator flaviaelenaflavia tufan flaviaelena Data 6 aprilie 2021 17:33:54
Problema Ridicare la putere in timp logaritmic Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.33 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;

int main()
{
    ifstream cin("lgput.in");
    ofstream cout("lgput.out");
    long long a,n,k,rez=1;
    cin>>n>>a;
    k=1999999973;
    while(n>0){
        if(n%2==1){
            rez=(rez*a)%k;
        }
        a=(a*a)%k;
        n=n/2;
    }
    cout<<rez;
    return 0;
}