제출 #579344

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
579344		KoD	Red-blue table (IZhO19_stones)	C++17	100 / 100	34 ms	2288 KiB

stones

#include <bits/stdc++.h>

using std::vector;
using std::array;
using std::pair;
using std::tuple;

using ll = long long;

template <class T>
constexpr T infty = std::numeric_limits<T>::max() / 2;

void solve(const int N, const int M) {
    const int Nh = N / 2 + 1;
    const int Mh = M / 2 + 1;
    int best_r = N, best_c = 0;
    for (int r = 0; r <= N; ++r) {
        for (int c = 1; c <= M; ++c) {
            const int a = std::max(Mh - (M - c), 0);
            if (N - (a * r + c - 1) / c >= Nh) {
                if (best_r + best_c < r + c) {
                    best_r = r;
                    best_c = c;
                }
            }
        }
    }
    vector ans(N, vector(M, '-'));
    const int a = std::max(Mh - (M - best_c), 0);
    for (int i = 0; i < best_r; ++i) {
        for (int j = a * i; j < a * (i + 1); ++j) {
            ans[i][j % best_c] = '+';
        }
        for (int j = best_c; j < M; ++j) {
            ans[i][j] = '+';
        }
    }
    std::cout << best_r + best_c << std::endl;
    for (const auto& v : ans) {
        for (const char c : v) {
            std::cout << c;
        }
        std::cout << '\n';
    }
}

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);    
    int test;
    std::cin >> test;
    while (test--) {
        int n, m;
        std::cin >> n >> m;
        solve(n, m);
    }
    return 0;
}

• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 16 / 16
• Subtask 4: 11 / 11
• Subtask 5: 15 / 15
• Subtask 6: 31 / 31