Submission #880240

#	Time	Username	Problem	Language	Result	Execution time	Memory
880240		niter	Art Exhibition (JOI18_art)	C++14	50 / 100	25 ms	6424 KiB

art

#include <bits/stdc++.h>
#define loop(i,a,b) for(int i = (a); i < (b); i ++)
#define pb push_back
#define ins insert
#define pii pair<int,int>
#define ff first
#define ss second
#define op(x) cerr << #x << " = " << x << endl;
#define opa(x) cerr << #x << " = " << x << ", ";
#define ops(x) cerr << x;
#define entr cerr << endl;
#define spac cerr << ' ';
#define STL(x) cerr << #x << " : "; for(auto &qwe:x) cerr << qwe << ' '; cerr << endl;
#define ARR(x, nnn) cerr << #x <<  " : "; loop(qwe,0,nnn) cerr << x[qwe] << ' '; cerr << endl;
#define BAE(x) x.begin(), x.end()
#define unilize(x) x.resize(unique(BAE(x)) - x.begin())
#define unisort(x) sort(BAE(x)); unilize(x);
using namespace std;
typedef long long ll;

struct P{
    ll A, B;
    bool operator<(P x){
        return (A == x.A) ? (B < x.B) : (A < x.A);
    }
};
const int mxn = (int)(1e5) + 10;
P x[mxn];
//P y[mxn];

int solve(int n){
//    int real_ans;
//    string ans_mask;
//    cin >> real_ans >> ans_mask;
    ll ans = -(1e18);
    loop(i,1,n+1){
        cin >> x[i].A >> x[i].B;
//        y[i] = x[i];
    }
    x[0].A = x[0].B = 0;
    sort(x + 1, x + n + 1);
    ll mx = x[1].A, add = 0;
    for(int i = 1; i <= n; i++){
        if(i != 1){
            mx = max(mx, x[i].A - add);
        }
        add += x[i].B;
//        opa(i) opa(mx) opa(add) op(x[i].A)
        ans = max(ans, -x[i].A + mx + add);
    }
//    if(ans != real_ans){
//        opa(ans) op(real_ans)
//        op(ans_mask)
//        loop(i,1,n+1){
//            ops(y[i].A) spac ops(y[i].B) entr
//        } entr
//        exit(0);
//    }
    cout << ans;
    return 0;
}

int main(){
//    freopen("res.txt", "r", stdin);
    ios::sync_with_stdio(false); cin.tie(0);
    int n; cin >> n;
    solve(n);
}
/*
4 81 0110
2 10
42 42
48 45
7 12

3 50 010
2 5
24 50
1 13
*/

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