Submission #1263644

#	Time	Username	Problem	Language	Result	Execution time	Memory
1263644		bachtd	Art Exhibition (JOI18_art)	C++20	50 / 100	103 ms	8520 KiB

art

/*#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")*/
#include <bits/stdc++.h>
#define int long long
#define Log2(x) 63 - __builtin_clzll(x)
#define pii pair<int, int>
#define se second
#define fi first
using namespace std;

const int N = 2e5 + 5;
const int inf = 1e18;
const int MOD = 1e9 + 7;
int n, m, LOG = 1;
int a[N], b[N], prf[N];
pii p[N];


main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> n;
    for (int i=1; i<=n; ++i) {
        cin >> p[i].fi >> p[i].se;
    }
    sort(p+1, p+n+1);
    for (int i=1; i<=n; ++i) {
        a[i]=p[i].fi;
        b[i]=p[i].se;
        prf[i]=prf[i-1]+b[i];
    }
    int maxk=a[1];
    int ans=b[1];
    for (int i=2; i<=n; ++i) {
        maxk=max(maxk, a[i]-prf[i-1]);
        ans=max(ans, prf[i]-a[i]+maxk);
    }
    cout << ans;
}

Compilation message (stderr)

art.cpp:20:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   20 | main() {
      | ^~~~

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