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Submission #464875

# Submission time Handle Problem Language Result Execution time Memory
464875 2021-08-14T11:02:36 Z ewirlan Rack (eJOI19_rack) C++17
40 / 100
 1 ms 204 KB 
//RACK

#define _CTR_SECURE_NO_WARNINGS
#include <iostream>
#include <algorithm>
typedef long long int ll;
template <typename T> T in()
{
    T x;
    std::cin >> x;
    return x;
}
constexpr int mod = 1e9 + 7;
int main()
{
    std::cin.tie(nullptr); std::cout.tie(nullptr); std::ios_base::sync_with_stdio(0);
    int n(in<int>()), K(in<int>());
    ll p(0), k((1ll << std::min(62, n)) - 1), s, odp(1), pot(1);
    while (k > p)
    {
        s = (p + k + 1) / 2;
        if (K <= s)k = s - 1;
        else
        {
            p = s;
            odp = (odp + pot) % mod;
        }
        pot = (pot * 2) % mod;
    }
    std::cout << odp << '\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 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 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 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 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 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Incorrect 0 ms 204 KB Output isn't correct
13 Halted 0 ms 0 KB -