Submission #162330

#	Time	Username	Problem	Language	Result	Execution time	Memory
162330		nvmdava	Art Exhibition (JOI18_art)	C++17	100 / 100	285 ms	16872 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define N 500005
#define INF 0x3f3f3f3f3f3f3f3f
#define MOD 1000000007LL

vector<pair<ll, ll> > v;
ll p[N];

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int n;
    cin>>n;
    for(int i = 1; i <= n; ++i){
    	ll a, b;
    	cin>>a>>b;
    	v.push_back({a, b});
    }
    v.push_back({0, 0});
    sort(v.begin(), v.end());

    ll mn = INF;
    ll res = -INF;
    for(int i = 1; i <= n; ++i){
    	p[i] = p[i - 1] + v[i].ss; 
    	mn = min(mn, p[i - 1] - v[i].ff);
    	res = max(res, p[i] - v[i].ff - mn);
    }
    cout<<res;
}

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