oj.uz

답안 #532378

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
532378 2022-03-02T19:40:11 Z Adek Rack (eJOI19_rack) C++17
100 / 100
 9 ms 316 KB 
#include <bits/stdc++.h>
using namespace std;

const int MOD = 1e9 + 7;

int main()
{
	ios_base::sync_with_stdio(0), cin.tie(0);

	int n;
	long long k;
	cin >> n >> k;
	--k;

	int wynik = 1;
	for (int i = 1; i <= n; ++i) {
		if (k % 2 == 0)
			wynik = ((long long)2*wynik) % MOD;
		else
			wynik = ((long long)2*wynik + 1) % MOD;
		k /= 2;
	}

	int pow2 = 1;
	for (int i = 1; i <= n; ++i)
		pow2 = ((long long)2*pow2) % MOD;

	cout << (wynik - (pow2 - 1) + MOD) % MOD << '\n';
	return 0;
}

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #3
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 316 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 312 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 9 ms 312 KB Output is correct