Cod sursa(job #1337035)

Utilizator blankBalmos Teodora blank Data 8 februarie 2015 15:34:11
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.46 kb
#include <fstream>
#define MOD 1999999973
using namespace std;

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

const int mod=1999999973;
int a,b;

int logexp(int x,int p)
{
    long long int a=x;
    int i,t=1;
    for(i=0;i<32;++i)
        {
            if (p & 1<<i)
                t=1ll*t*a%mod;
            a=a*a%mod;
        }
    return t;

}

int main()
{
    long long t;

    f>>a>>b;

    g<<logexp(a,b);

    return 0;
}