Submission #856803

#	Time	Username	Problem	Language	Result	Execution time	Memory
856803		quanlt206	Art Exhibition (JOI18_art)	C++17	50 / 100	1004 ms	27472 KiB

art

#include<bits/stdc++.h>
#define X first
#define Y second
#define all(x) begin(x), end(x)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define FORD(i, b, a) for(int i = (b); i >= (a); i--)
#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define mxx max_element
#define mnn min_element
#define SQR(x) (1LL * (x) * (x))
#define MASK(i) (1LL << (i))
#define Point Vector
#define left Left
#define right Right
#define div Div

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
typedef pair<db, db> pdb;
typedef pair<ld, ld> pld;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
typedef pair<ll, int> pli;
typedef pair<ll, pii> plii;

template<class A, class B>
    bool maximize(A& x, B y) {
        if (x < y) return x = y, true; else return false;
    }
template<class A, class B>
    bool minimize(A& x, B y) {
        if (x > y) return x = y, true; else return false;
    }
/* END OF TEMPLATE */

const int N = 1e6 + 7;

pll a[N];

ll pre[N];

int n;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>n;
    FOR(i, 1, n) cin>>a[i].X>>a[i].Y;
    sort(a + 1, a + 1 + n);
    FOR(i, 1, n) pre[i] = pre[i - 1] + a[i].Y;
    ll res = -9e18;
    FOR(i, 1, n)
        FOR(j, i, n) maximize(res, pre[j] - pre[i - 1] - (a[j].X - a[i].X));
    cout<<res;
//    ll Max = -1e18, res = -1e18;
//    FOR(i, 1, n) {
//        maximize(Max, -pre[i - 1] + a[i].X);
//        maximize(res, pre[i] - a[i].X + Max);
//    }
//    cout<<res;
    return 0;
}

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