Submission #966872

#	Time	Username	Problem	Language	Result	Execution time	Memory
966872		vjudge1	Art Exhibition (JOI18_art)	C++11	100 / 100	541 ms	25100 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll,ll>
#define fi first
#define se second

ll N;
pll arr[500100];
ll psum[500100];
ll ans=-1e18, maks=-1e18;


int main() 
{
    cin >> N;
    for(int i=1; i<=N; i++) {
        cin >> arr[i].fi >> arr[i].se;
    }
    sort(arr+1, arr+N+1);
    for(int i=1; i<=N; i++) {
        psum[i] = psum[i-1] + arr[i].se;
    }
    for(int i=N; i>=1; i--) {
        maks = max(maks, psum[i]-arr[i].fi);
        ans = max(ans, maks + arr[i].fi-psum[i-1]);
    }
    cout << ans << endl;
}

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