Cod sursa(job #1488315)

Utilizator andreitulusAndrei andreitulus Data 18 septembrie 2015 18:10:38
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.56 kb
#include <stdio.h>
#define inff 1999999973
using namespace std;

int x, n;


void read()
{
    scanf("%d %d", &x, &n);
}


int solve(int x, int n)
{
    if(n == 0)
        return 1;

    if(n == 1)
        return x;

    if(n % 2 == 0)
        return solve(x * x, n / 2) % inff;
    else
        return (x * solve(x * x, (n - 1)/2)) % inff;
}



int main()
{
    freopen("lgput.in","r",stdin);
    freopen("lgput.out","w",stdout);

    read();

    printf("%d", solve(x, n));

    fclose(stdin);
    fclose(stdout);

    return 0;
}