Submission #1033849

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033849		kustizus	Art Exhibition (JOI18_art)	C++17	100 / 100	153 ms	24916 KiB

art

// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,fma,bmi2,popcnt,lzcnt")
#include <bits/stdc++.h>
#define int long long
using namespace std;
mt19937_64 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
const int N=5e5;
int n,pre[N+5];
pair <int,int> a[N+5];
void Solve(){
    cin>>n;
    for (int i=1;i<=n;++i) cin>>a[i].first>>a[i].second;
    sort(a+1,a+n+1);
    int mx=-a[1].first,ans=-1e18;
    for (int i=1;i<=n;++i){
        pre[i]=pre[i-1]+a[i].second;
        ans=max(ans,pre[i]-a[i].first-mx);
        mx=min(mx,pre[i]-a[i+1].first);
    }
    cout<<ans;
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    // freopen ("FILE.INP","r",stdin);
    // freopen ("FILE.OUT","w",stdout);
    int t=1;
    while (t--) Solve();
    cerr<<"\nTIME: "<<1000*clock()/CLOCKS_PER_SEC<<"ms\n";
}

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