Cod sursa(job #929660)

Utilizator DDeidaraSzasz Tamas Csaba DDeidara Data 27 martie 2013 10:22:12
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.46 kb
#include<fstream>

using namespace std;

const long mod = 1999999973;

long long n,p;

long long expBySquaring(long long x,long long n)
{
    if (n==1) return x;
    else if (n%2) return (x%mod*expBySquaring (x%mod*x%mod,(n-1)/2))%mod;
    else return (expBySquaring(x%mod*x%mod,n/2))%mod;
}

ifstream f("lgput.in");
ofstream g("lgput.out");

int main()
{
    f>>n>>p;
    f.close();

    g<<expBySquaring(n,p);
    g.close();

    return 0;
}