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Submission #643257

# Submission time Handle Problem Language Result Execution time Memory
643257 2022-09-21T15:09:45 Z west Rack (eJOI19_rack) C++14
100 / 100
 9 ms 300 KB 
#include <iostream>

using namespace std;
const int m=1e9+7;
int main()
{
    int n;
    long long k;
    int wynik=1;
    cin>>n>>k;
    --k;
    for(int i=1;i<=n;i++)
    {
        if(k%2==0)
            wynik=((long long)2*wynik)%m;
            else
            wynik=((long long)2*wynik+1)%m;
            k=k/2;
    }
    int p=1;
        for(int i=1;i<=n;i++)
    p=((long long)2*p)%m;
    cout<<(wynik-(p-1)+m)%m;
    return 0;
}

Subtask #1
20.0 / 20.0

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

Subtask #2
20.0 / 20.0

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

Subtask #3
60.0 / 60.0

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