Cod sursa(job #2049185)

Utilizator mitza23Mihai Grebla mitza23 Data 26 octombrie 2017 22:11:49
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.42 kb
#include <fstream>
#define mod 1999999973

using namespace std;

int main()
{
    ifstream f("lgput.in");
    ofstream g("lgput.out");
    int a,b;
    unsigned long long rez=1;
    f>>a>>b;
    while(b>0){
        if(b%2==1){
            rez=(rez*a)%mod;
            b--;
        }
        if(b>0){
            b=b/2;
            a=a*a%mod;
            rez%=mod;
        }
    }
    g<<rez%mod;


}