Submission #813557

#	Time	Username	Problem	Language	Result	Execution time	Memory
813557		manhlinh1501	Art Exhibition (JOI18_art)	C++17	0 / 100	2 ms	340 KiB

art

/// @author : Hoang Manh Linh
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 5e5 + 5;
using i64 = long long;
using pll = pair<i64, i64>;


int n;
pll a[MAXN];
i64 sum[MAXN];
i64 ans = 0;

int main(int argc, char **argv) {
    if(fopen(".inp", "r")) {
        freopen(".inp", "r", stdin);
        freopen(".out", "w", stdout);
    }

#ifndef ONLINE_JUDGE
    freopen("test.inp", "r", stdin);
#endif // ONLINE_JUDGE

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n;

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

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

    for(int i = 1; i <= n; i++)
        sum[i] = sum[i - 1] + a[i].second;

    for(int i = 1; i <= n; i++) {
        for(int j = i; j <= n; j++)
            ans = max(ans, (sum[j] - sum[i - 1]) - (a[j].first - a[i].first));
    }

    cout << ans;
}

Compilation message (stderr)

art.cpp: In function 'int main(int, char**)':
art.cpp:16:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         freopen(".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
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(".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
art.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen("test.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50