Submission #1260402

#	Time	Username	Problem	Language	Result	Execution time	Memory
1260402		sparecake	Art Exhibition (JOI18_art)	C++20	100 / 100	322 ms	16076 KiB

art

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define maxn 200005

int n;

struct varid{
    ll a; //kich thuoc
    ll b; //gia tri
};

bool cmp(const varid& x, const varid& y){
    return x.a < y.a;
}

vector<varid> t;
vector<ll> p;
vector<ll> minn;
ll ans = LLONG_MIN;

int main()
{
    

    cin >> n;

    t.resize(n+1);
    p.resize(n+1);
    minn.resize(n+1);

    for (int i = 1; i <= n; i++) cin >> t[i].a >> t[i].b;

    sort(t.begin()+1, t.end(), cmp); //sort theo size tang dan

    p[1] = t[1].b;

    for (int i = 2; i <= n; i++){
        p[i] = p[i-1] + t[i].b;
    }

    minn[1] = -t[1].a;

    for (int i = 2; i <= n; i++){
        minn[i] = min(minn[i-1], p[i-1] - t[i].a);
    }

    for (int r = 1; r <= n; r++){
        //tim min cua p[r-1]\ - a[r], r <= l

        ans = max(ans, p[r] - t[r].a - minn[r]);
    }

    cout << ans << '\n';

    return 0;
}

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