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Submission #929525

# Submission time Handle Problem Language Result Execution time Memory
929525 2024-02-18T06:08:56 Z Chinguun Rack (eJOI19_rack) C++14
100 / 100
 4 ms 348 KB 
#include<bits/stdc++.h>
using namespace std;

#define int long long
#define ff first
#define ss second
#define pb push_back
#define meta int x = i * 2 + 1, y = x + 1, m = (L + R) / 2

const int N = 2e5 + 7;
const int oo = 1e18;
const int mod = 1e9 + 7;

typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<pii> vii;

int ans;

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	
	int n, k; cin >> n >> k;
	for(int i = 1; i <= n; i++) {
		if(k % 2 == 1 || k == 0) {
			ans *= 2;
			ans %= mod;
			k /= 2;
			k++;
		}
		else {
			ans *= 2;
			ans++;
			ans %= mod;
			k /= 2;
		}
	}
	cout << (ans + 1) % mod << '\n';
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 4 ms 344 KB Output is correct