oj.uz

Submission #515773

# Submission time Handle Problem Language Result Execution time Memory
515773 2022-01-19T15:59:44 Z acatmeowmeow Preokret (COCI18_preokret) C++11
50 / 50
 1 ms 332 KB 
#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;
}

Compilation message

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
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 312 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 324 KB Output is correct
10 Correct 0 ms 204 KB Output is correct