Cod sursa(job #682840)

Utilizator tiriplicamihaiTiriplica Mihai Dragos tiriplicamihai Data 19 februarie 2012 16:52:21
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator c Status done
Runda Arhiva educationala Marime 0.54 kb
#include<stdio.h>

#define mod 1999999973

int n, p;

long long power(int b, int e){
	if(e == 1)
		return b;
	else{
		if(e % 2)
			return b * power((b * b) % mod, (e - 1) / 2);
		else
			return power((b*b) % mod, e / 2);
	}
}

int main(){
	freopen("lgput.in", "r", stdin);
	freopen("lgput.out", "w", stdout);
	int i;
	long long a, sol = 1;
	scanf("%d %d", &n, &p);
	/*a = n;
	for(i = 0; (1<<i) <= p; i++){
		if((1<<i) & p)
			sol = (sol * a) % mod;
		a = (a * a) % mod;
	}*/
	printf("%lld\n", power(n, p));
	fclose(stdin);
	fclose(stdout);
	return 0;
}