Cod sursa(job #1552174)

Utilizator wereyonstanoi luca wereyon Data 17 decembrie 2015 12:27:27
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long n,x,p,u;
int main()
{
    fin>>x>>n;
    p=1;
    u=1999999973;
    while(n>0)
    {
        if(n%2)
        {
            p=p*x%u;
            n--;
        }
        x=x*x%u;
        n=n/2;
    }
    fout<<p;
    return 0;
}