제출 #879307

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
879307		The_Samurai	Nice sequence (IZhO18_sequence)	C++17	15 / 100	6 ms	1112 KiB

sequence

// I stand with PALESTINE




//#pragma GCC optimize("Ofast,O3")
//#pragma GCC target("avx,avx2")
#include "bits/stdc++.h"

using namespace std;
using ll = long long;
const int inf = 1e9;

void out(vector<int> a, bool minus = false) {
    cout << a.size() << '\n';
    if (a.empty()) return;
    for (int x: a) cout << x * (minus ? -1 : 1) << ' ';
    cout << '\n';
}

vector<int> solve(int n, int m) {
    // n >= m
    if (n % m == 0) return vector(n - 1, 1);
    if (m == 2) {
        vector<int> a(n);
        for (int i = 0; i < n; i++) a[i] = i % 2 ? inf : -(inf - 1);
        return a;
    }
    if (abs(n - m) <= 2) {
        vector<int> a(2 * m - 1);
        for (int i = 0; i < a.size(); i++) {
            a[i] = (i + 1) % m ? -2 : (m - 1) * 2 + 1;
        }
        return a;
    }
    return {};
}

void solve() {
    int n, m;
    cin >> n >> m;
    if (n >= m) out(solve(n, m));
    else out(solve(m, n), true);
}

int main() {
    cin.tie(0)->sync_with_stdio(false);
#ifdef sunnatov
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    int q = 1;
    cin >> q;
    while (q--) {
        solve();
//        cout << '\n';
    }
}

컴파일 시 표준 에러 (stderr) 메시지

sequence.cpp: In function 'std::vector<int> solve(int, int)':
sequence.cpp:31:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         for (int i = 0; i < a.size(); i++) {
      |                         ~~^~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 9 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 14
• Subtask 6: 0 / 18
• Subtask 7: 0 / 24