Submission #1144512

#	Time	Username	Problem	Language	Result	Execution time	Memory
1144512		Medetbek	Art Exhibition (JOI18_art)	C++17	100 / 100	111 ms	19928 KiB

art

//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")
#include <bits/stdc++.h>

#define ll long long
#define int long long
#define all(v) v.begin(), v.end()
#define nl '\n'
#define pb push_back
#define sz(s) (int)(s).size()
#define f first
#define s second
#define boost ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

using namespace std;
const ll N = 1e5+10, MX = 1e18+1, MOD = 1e9 + 7;
void solve(){
    ll n;
    cin >> n;
    ll a[n + 1], b[n + 1];
    pair <int, int> pr[n+1];
    ll ans = 0;
    for(int i = 1; i <= n; i++){
        cin >> a[i] >> b[i];
        pr[i] = {a[i],b[i]};
        ans = max(ans, b[i]);
    }
    sort(pr + 1, pr + 1 + n);
    for(int i = 1; i <= n; i++){
        a[i]=pr[i].f;
        b[i]=pr[i].s;
    }
    ll p[n+1];
    p[0]=0;
    for(int i = 1; i <= n; i++){
        p[i] = p[i-1]+b[i];
    }
    ll mn = -MX;
    for(int i = 1; i <= n; i++){
        mn = max(a[i]-p[i-1], mn);
        ans = max(ans, p[i]-a[i] + mn);
    }
    cout << ans << nl;
}
main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    ll ql =1;
	 while(ql--){
	    solve();
	}
}

Compilation message (stderr)

art.cpp:45:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   45 | main(){
      | ^~~~

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