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Submission #645384

# Submission time Handle Problem Language Result Execution time Memory
645384 2022-09-27T01:26:49 Z 1zaid1 Rack (eJOI19_rack) C++17
100 / 100
 17 ms 16008 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n';

const int M = 2e6+5, MOD = 1e9+7;
int p[M];

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    p[0] = 1;
    for (int i = 1; i < M; i++) p[i] = (p[i-1]*2)%MOD;
    
    int n, k;
    cin >> n >> k;
    k--;

    int ans = 0;
    while (n--) {
        if (k%2) {
            ans += p[n];
            ans %= MOD;
        } k /= 2;
    }

    cout << ans+1 << endl;
    return 0;
}

/*
4
14
9
8
12
6
2
3
5
7
11
13
*/

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 15956 KB Output is correct
2 Correct 17 ms 15976 KB Output is correct
3 Correct 14 ms 15956 KB Output is correct
4 Correct 14 ms 15856 KB Output is correct
5 Correct 16 ms 15912 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 15956 KB Output is correct
2 Correct 17 ms 15976 KB Output is correct
3 Correct 14 ms 15956 KB Output is correct
4 Correct 14 ms 15856 KB Output is correct
5 Correct 16 ms 15912 KB Output is correct
6 Correct 16 ms 15936 KB Output is correct
7 Correct 17 ms 15932 KB Output is correct
8 Correct 15 ms 15872 KB Output is correct
9 Correct 16 ms 15848 KB Output is correct
10 Correct 15 ms 15916 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 15956 KB Output is correct
2 Correct 17 ms 15976 KB Output is correct
3 Correct 14 ms 15956 KB Output is correct
4 Correct 14 ms 15856 KB Output is correct
5 Correct 16 ms 15912 KB Output is correct
6 Correct 16 ms 15936 KB Output is correct
7 Correct 17 ms 15932 KB Output is correct
8 Correct 15 ms 15872 KB Output is correct
9 Correct 16 ms 15848 KB Output is correct
10 Correct 15 ms 15916 KB Output is correct
11 Correct 17 ms 15896 KB Output is correct
12 Correct 16 ms 15884 KB Output is correct
13 Correct 15 ms 15860 KB Output is correct
14 Correct 16 ms 16008 KB Output is correct
15 Correct 17 ms 15964 KB Output is correct