Cod sursa(job #1129246)
Utilizator | Andrei Blaj andreiblaj17 | Data | 27 februarie 2014 20:57:11 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.49 kb |
#include <iostream>
#include <fstream>
#define mod 1999999973
using namespace std;
ifstream in("lgput.in");
ofstream out("lgput.out");
long long pow(long long a, long long b){
if (b==1) return a%mod;
else {
long long h=pow(a, b/2);
if (b%2==0)
return (h%mod)*(h%mod)%mod;
else return ((((h%mod)*(h%mod))%mod)*(a%mod))%mod;
}
}
int main(){
long long x,y;
in >> x >> y;
out << pow(x, y)%mod;
return 0;
}