Cod sursa(job #2375787)

Utilizator YetoAdrian Tonica Yeto Data 8 martie 2019 12:10:38
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
#define mod 1999999973
long long n, p, a;

int main () {
    ifstream fin ("lgput.in");
    ofstream fout ("lgput.out");
    fin>>a>>n;
    p=1;
    while (n!=0) {
        if (n%2!=0)
            p=(p*a)%mod;
        a=(a*a)%mod;
        n=(n/2)%mod;
    }
    fout<<p;
    return 0;
}