Submission #1049920

#	Time	Username	Problem	Language	Result	Execution time	Memory
1049920		vjudge1	Art Exhibition (JOI18_art)	C++17	0 / 100	0 ms	348 KiB

art

#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
int main() {
    int n;
    cin >> n;
    pair<long long, long long> a[n];long long b[n], c[n], mx=-INT64_MAX, mj=0, mnx;
    for(int i=0; i<n; i++){
        cin >> a[i].f >> a[i].s;
    }
    sort(a, a+n);
    b[0]=a[0].s-a[0].f;mx=b[0];
    for(int i=1; i<n ;i++){
        b[i]=b[i-1]-a[i].f+a[i].s+a[i-1].f;
        if(b[i]>mx){
            mj=i; mx=b[i];
        }
    }
    c[0]=a[0].f;mnx=c[0];
    for(int i=1; i<=mj ;i++){
        c[i]=c[i-1]-a[i-1].f+a[i].f-a[i-1].s;
        if(mnx<c[i]){
            mnx=c[i];
        }
    }
    cout << mx+mnx;
    return 0;
}

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