Cod sursa(job #1376404)

Utilizator ovidiuz98Zamfir Ovidiu ovidiuz98 Data 5 martie 2015 17:19:16
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.41 kb
#include <fstream>
#define mod 1999999973

using namespace std;

ifstream fin("lgput.in");
ofstream fout("lgput.out");

int a,b;
int pow(int b,int p){
    int sol=1;
    while(p){
        if(p&1)
            sol=(sol*b)%mod;
        b=(b*b)%mod;
        p/=2;
    }
    return sol;
}
int main(){
    fin>>a>>b;
    a%=mod;
    fout<<pow(a,b)<<"\n";
    fin.close();fout.close();
    return 0;
}