Submission #1265084

#	Time	Username	Problem	Language	Result	Execution time	Memory
1265084		ducdev	Art Exhibition (JOI18_art)	C++17	100 / 100	101 ms	8264 KiB

art

// Author: 4uckd3v - Nguyen Cao Duc
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

const int MAX_N = 5e5;
const int MOD = 1e9 + 7;

int n;
pair<ll, int> a[MAX_N + 5];

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (fopen("MAIN.INP", "r")) {
        freopen("MAIN.INP", "r", stdin);
        freopen("MAIN.OUT", "w", stdout);
    };

    cin >> n;

    for (int i = 1; i <= n; i++) {
        cin >> a[i].first >> a[i].second;
    };

    sort(a + 1, a + n + 1);

    ll pref = 0, res = 0, minPref = 1e18;
    for (int i = 1; i <= n; i++) {
        pref += a[i].second;
        minPref = min(minPref, pref - a[i].second - a[i].first);
        res = max(res, pref - a[i].first - minPref);
    };

    cout << res << '\n';
};

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:17:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |         freopen("MAIN.INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:18:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         freopen("MAIN.OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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