Submission #19376

#	Time	Username	Problem	Language	Result	Execution time	Memory
19376		golala123	Α (kriii4_P1)	C++98	100 / 100	0 ms	1720 KiB

P1

#include <iostream>
#include <stdio.h>
#include <vector>
using namespace std;
long long a, x;
long long ans = 1;
int temp = 1;
vector<long long> m;
vector< pair<int , int > > two;
const int MOD = 1000000007;
int main(){
	cin >> a >> x;
	a %= MOD;
	long long temp = 1;
	int i = 0;
	m.push_back(a);
	while (temp < x){
		long long aa = 1;
		aa = m[i] % MOD * m[i] % MOD;
		aa %= MOD;
		m.push_back(aa%MOD);
		temp *= 2;
		i++;
	}
	int j = 0;
	while (x != 0){
		if (x%2 == 1)
			two.push_back({ j, x % 2 });
		x /= 2;
		j++;
	}
	for (int i = 0; i < two.size(); i++){
		if (two[i].second == 1){
			ans = ans*m[two[i].first] % MOD;
			ans %= MOD;
		}
	}
	cout << ans % MOD;
}

• Subtask 1: 100 / 100