제출 #515773

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
515773		acatmeowmeow	Preokret (COCI18_preokret)	C++11	50 / 50	1 ms	332 KiB

preokret

#include <bits/stdc++.h>

using namespace std;

#define int long long

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, cnt = 0;
    cin >> n;
    vector<pair<int, int>> arr;
    for (int i = 1; i <= n; i++) {
        int x;
        cin >> x;
        if(x <= 1440) cnt++;
        arr.push_back({x, 1});
    }
    int m;
    cin >> m;
    for (int i = 1; i <= m; i++) {
        int x;
        cin >> x;
        if (x <= 1440) cnt++;
        arr.push_back({x, 2});
    }
    sort(arr.begin(), arr.end());
    vector<pair<int, int>> res(n + m + 5);
    res[0] = (arr[0].second == 1 ? pair<int, int>(1, 0) : pair<int, int>(0, 1));
    for (int i = 1; i < arr.size(); i++) {
       int x = res[i - 1].first, y = res[i - 1].second;
       if (arr[i].second == 1) x++;
       else y++;
       res[i] = {x, y}; 
    }
    int cnt2 = 0;
    for (int i = 1; i < arr.size() - 1; i++) {
        int prev_x = res[i - 1].first, prev_y = res[i - 1].second;
        int next_x = res[i + 1].first, next_y = res[i + 1].second;
        int x = res[i].first, y = res[i].second;
        if (prev_x > prev_y && x == y && next_x < next_y) cnt2++;
        else if(prev_x < prev_y && x == y && next_x > next_y) cnt2++;
    }
    cout << cnt << '\n' << cnt2 << '\n';
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

preokret.cpp: In function 'int main()':
preokret.cpp:30:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for (int i = 1; i < arr.size(); i++) {
      |                     ~~^~~~~~~~~~~~
preokret.cpp:37:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for (int i = 1; i < arr.size() - 1; i++) {
      |                     ~~^~~~~~~~~~~~~~~~

• Subtask 1: 50 / 50