Cod sursa(job #1401425)

Utilizator geo_furduifurdui geo geo_furdui Data 25 martie 2015 21:03:14
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.47 kb
#include <iostream>
#include<stdio.h>
using namespace std;
FILE *f,*g;
int main()
{
    long long  n,x,p=1;
    f=fopen("lgput.in","r");
    g=fopen("lgput.out","w");
    fscanf(f,"%lld %lld",&x,&n);
    while(n>0)
    {
        if(n%2==1)
        {
            n--;
            p=p*x;
            p=p%1999999973;
        }
        x=x*x;
        x=x%1999999973;
        n=n/2;
    }
    fprintf(g,"%lld",p);
    fclose(f);
    fclose(g);
    return 0;
}