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Submission #532283

# Submission time Handle Problem Language Result Execution time Memory
532283 2022-03-02T16:44:08 Z DariaR Rack (eJOI19_rack) C++17
40 / 100
 1 ms 312 KB 
#include <bits/stdc++.h>
using namespace std; 

const int MOD = 1e9 + 7;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, k;
    long long v = 1;
    long long base = 1;
    cin >> n >> k;
    k--; 

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

    cout << (v - (base - 1) + MOD) % MOD << "\n";
    
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 312 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 312 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct

Subtask #3
0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 312 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 308 KB Output is correct
12 Incorrect 1 ms 204 KB Output isn't correct
13 Halted 0 ms 0 KB -