Submission #958374

#	Time	Username	Problem	Language	Result	Execution time	Memory
958374		leo_2727	Art Exhibition (JOI18_art)	C++17	100 / 100	153 ms	31000 KiB

art

#include <algorithm>
#include <fstream>
#include <vector>
#include <queue>
#include <stack>
#include <iostream>
#include <cmath>
#include <queue>
#include <set>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <unordered_set>
#define F first
#define S second
#define PB push_back
using namespace std;
const long long MOD=1e9+7, INF=1e18;
const int INFI=1e9;
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ii> vii;
typedef vector<pair<int, ii>> viii;
typedef vector<vii> vvii;
typedef vector<ll> vll;
typedef vector<vll> vvll;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;  cin>>n;
    vll pref(n+1, 0);
    vector<pair<ll, ll>> info(n);
    for(auto &num:info) cin>>num.F>>num.S;
    sort(info.begin(), info.end());
    for(int i=1;i<=n;i++)   pref[i]+=pref[i-1]+info[i-1].S;
    ll ans=0;
    priority_queue<ll> pq;
    for(int i=0;i<n;i++){
        ll start=-pref[i]+info[i].F, end=pref[i+1]-info[i].F;
        pq.push(start);
        //cout<<start<<" "<<end<<endl;
        ans=max(ans, end+pq.top());
    }
    cout<<ans<<endl;
    return 0;
}

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