Submission #1115365

#	Time	Username	Problem	Language	Result	Execution time	Memory
1115365		staszic_ojuz	Art Exhibition (JOI18_art)	C++17	100 / 100	607 ms	66468 KiB

art

#include<bits/stdc++.h>
using namespace std;
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    long long n, wiel, wart, l = 0, p = 0, overall = 0;
    cin >> n;
    map<long long, long long> m;
    vector<vector<long long>> v;
    for (int i = 0; i < n; i++) {
        cin >> wiel >> wart;
        m[wiel] += wart;
        overall += wart;
    }
    for (auto [wie, war] : m) {
        v.push_back({wie, war});
    }
    long long wyn = 0, suma = v[0][1], osw = v[v.size() - 1][0], i = 0;
    while (l < v.size()) {
        if (i < v.size()) {
            if (overall - osw + v[i][0] > wyn) {
                wyn = overall - osw + v[i][0];
            }
            if (v[i][1] > wyn) {
                wyn = v[i][1];
            }
            overall -= v[i][1];
        }
        i += 1;
        if ((l >= p) || (p < v.size() && suma - v[p][0] + v[l][0] > v[p][1])) {
            if (suma - v[p][0] + v[l][0] > wyn) {
                wyn = suma - v[p][0] + v[l][0];
            }
            p += 1;
            if (p < v.size() - 1) {
                suma += v[p][1];
            }
        }
        else {
            suma -= v[l][1];
            l += 1;
        }
    }
    cout << wyn;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:19:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     while (l < v.size()) {
      |            ~~^~~~~~~~~~
art.cpp:20:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |         if (i < v.size()) {
      |             ~~^~~~~~~~~~
art.cpp:30:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |         if ((l >= p) || (p < v.size() && suma - v[p][0] + v[l][0] > v[p][1])) {
      |                          ~~^~~~~~~~~~
art.cpp:35:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |             if (p < v.size() - 1) {
      |                 ~~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50