oj.uz

Submission #508246

# Submission time Handle Problem Language Result Execution time Memory
508246 2022-01-13T07:47:34 Z KoD Kamenčići (COCI21_kamencici) C++17
70 / 70
 46 ms 85132 KB 
#include <bits/stdc++.h>

using std::vector;

template <class F> struct RecLambda : private F {
    explicit RecLambda(F&& f) : F(std::forward<F>(f)) {}
    template <class... Args> decltype(auto) operator()(Args&&... args) const {
        return F::operator()(*this, std::forward<Args>(args)...);
    }
};

int main() {
    int N, K;
    std::cin >> N >> K;
    vector<char> S(N);
    for (auto& x : S) {
        std::cin >> x;
    }
    vector<int> red(N + 1);
    for (int i = 0; i < N; ++i) {
        red[i + 1] = red[i] + (S[i] == 'C');
    }
    vector memo(N, vector(N + 1, vector<int>(K, -1)));
    std::cout << (RecLambda([&](auto&& dfs, const int l, const int r, const int k) -> int {
        if (k >= K) return 0;
        const int other = red[l] + (red[N] - red[r]) - k;
        if (other >= K) return 1;
        if (memo[l][r][k] != -1) return memo[l][r][k];
        if (dfs(l + 1, r, other) == 0) return memo[l][r][k] = 1;
        if (dfs(l, r - 1, other) == 0) return memo[l][r][k] = 1;
        return memo[l][r][k] = 0;
    })(0, N, 0) ? "DA" : "NE") << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 292 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 416 KB Output is correct
8 Correct 1 ms 292 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 532 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 292 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 416 KB Output is correct
8 Correct 1 ms 292 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 1 ms 532 KB Output is correct
13 Correct 14 ms 18592 KB Output is correct
14 Correct 27 ms 24228 KB Output is correct
15 Correct 11 ms 13260 KB Output is correct
16 Correct 39 ms 54348 KB Output is correct
17 Correct 46 ms 85132 KB Output is correct
18 Correct 38 ms 54256 KB Output is correct