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Submission #610439

# Submission time Handle Problem Language Result Execution time Memory
610439 2022-07-28T07:54:04 Z PolishFighter Rack (eJOI19_rack) C++17
100 / 100
 10 ms 300 KB 
#include<bits/stdc++.h>

using namespace std;

const long long M = 1e9 + 7;

int main()
{
        int n;
        long long k;
        cin >> n >> k;
        k--;
        int v = 1;

        for(int i = 0; i < n; i++)
        {   
                if(k % 2 == 0)
                        v = (2 * v) % M;
                else
                        v = ((2 * v) + 1) % M;

                k /= 2;
        }   


        int p2 = 1;

        for(int i = 0; i < n; i++)
        {   
                p2 = (p2 * 2) % M;
        }   

        cout << (v - (p2 - 1) + M) % M << "\n";
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 300 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 300 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 10 ms 300 KB Output is correct