Cod sursa(job #2040909)

Utilizator elenaisaiaElena Isaia elenaisaia Data 16 octombrie 2017 17:38:49
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.51 kb
#include <iostream>
#include <fstream>
#define MOD 1999999973
using namespace std;
long long putere(long long a,long long b)
{
    long long p=1;
    while(b)
    {
        if(b%2)
        {
            b--;
            p=(p*a)%MOD;
        }
        else
        {
            a=(a*a)%MOD;
            b/=2;
        }
    }
    return p;
}
int main()
{
    long long a,b;
    ifstream fin("lgput.in");
    ofstream fout("lgput.out");
    fin>>a>>b;
    fout<<putere(a,b);
    return 0;
}