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Submission #464871

# Submission time Handle Problem Language Result Execution time Memory
464871 2021-08-14T10:53:32 Z ewirlan Rack (eJOI19_rack) C++17
40 / 100
 140 ms 102404 KB 
//RACK

#define _CTR_SECURE_NO_WARNINGS
#include <iostream>
#include <vector>
typedef long long int ll;
template <typename T> T in()
{
    T x;
    std::cin >> x;
    return x;
}
constexpr int maxn = 1e6 + 3;
constexpr int mod = 1e9 + 7;
ll pow2[maxn]{ 1 };
std::vector <ll> wek{ 1 };
std::vector <ll> wek2;
int main()
{
    std::cin.tie(nullptr); std::cout.tie(nullptr); std::ios_base::sync_with_stdio(0);
    int n(in<int>());
    std::size_t k(in<std::size_t>());
    for (int i(1); i < n; ++i)pow2[i] = (pow2[i - 1] * 2) % mod;
    int j(n);
    while (wek.size() < k)
    {
        --j;
        for (auto i : wek)wek2.push_back((i + pow2[j]) % mod);
        for (auto i : wek2)wek.push_back(i);
        wek2.clear();
    }
    std::cout << wek[k - 1] << '\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 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 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 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 1224 KB Output is correct
9 Correct 4 ms 3512 KB Output is correct
10 Correct 4 ms 3640 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 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 1224 KB Output is correct
9 Correct 4 ms 3512 KB Output is correct
10 Correct 4 ms 3640 KB Output is correct
11 Runtime error 140 ms 102404 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -