Cod sursa(job #866315)

Utilizator sana1987Laurentiu Dascalu sana1987 Data 27 ianuarie 2013 19:40:59
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator c Status done
Runda Arhiva educationala Marime 0.56 kb
#include <stdio.h>
#include <string.h>

#define MOD 1999999973

long mypowrec(long N, long P) {
    if (P <= 0)
        return 1;
    if (P == 1)
        return N % MOD;

    if (P % 2) {
        long aux = mypowrec(N, (P - 1) / 2) % MOD;
        return (P * aux * aux * 1LL) % MOD;
    }
    long aux = mypowrec(N, P / 2) % MOD;
    return (aux * aux * 1LL) % MOD;
}

int main(int argc, char **argv) {
    long N, P;
    freopen("lgput.in", "r", stdin);
    freopen("lgput.out", "w", stdout);

    scanf("%ld %ld", &N, &P);
    printf("%ld", mypowrec(N, P));

    return 0;
}