Cod sursa(job #1761655)

Utilizator Andrei_CotorAndrei Cotor Andrei_Cotor Data 22 septembrie 2016 17:37:26
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.38 kb
#include<fstream>
#define MOD 1999999973
using namespace std;
ifstream fi("lgput.in");
ofstream fo("lgput.out");
int i,p;
long long a,rez;
int main()
{
    rez=1;
    fi>>a>>p;
    for(i=0; (1<<i)<=p; i++)
    {
        if (((1<<i)&p)>0)
            rez=(rez*a)%MOD;
        a=(a*a)%MOD;
    }
    fo<<rez%MOD<<"\n";
    fi.close();
    fo.close();
    return 0;
}