Cod sursa(job #2118351)

Utilizator IustinSSurubaru Iustin IustinS Data 30 ianuarie 2018 16:03:15
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.43 kb
#include <fstream>
#define mod 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");

long long a, b;

long long exp(long long x, long long y);
int main()
{
   fin>>a>>b;
   fout<<exp(a, b)%mod;
    return 0;
}
long long exp(long long x, long long y)
{
    if (y==0)
        return 1;
    else if (y%2==0)
        return exp(x*x%mod, y/2);
    else return exp(x*x%mod, y/2)*x%mod;
}