Submission #207823

#	Time	Username	Problem	Language	Result	Execution time	Memory
207823		opukittpceno_hhr	Art Exhibition (JOI18_art)	C++17	100 / 100	229 ms	22008 KiB

art

#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <string>
#include <cmath>
#include <cstdio>
#include <iomanip>
#include <fstream>
#include <cassert>
#include <cstring>
#include <unordered_set>
#include <unordered_map>
#include <numeric>
#include <ctime>
#include <bitset>
#include <complex>
#include <random>

using namespace std;

#define int long long

const int INF = 1e18 + 239;

signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	int n;
	cin >> n;
	vector<pair<int, int>> aw(n);
	for (auto &t : aw) {
		cin >> t.first >> t.second;
	}
	sort(aw.begin(), aw.end());
	vector<int> a(n);
	vector<int> b(n);
	for (int i = 0; i < n; i++) {
		tie(a[i], b[i]) = aw[i];
	}
	vector<int> ps(n + 1);
	for (int i = 0; i < n; i++) {
		ps[i + 1] = ps[i] + b[i];
	}
	int mval = -INF;
	int ans = -INF;
	for (int i = 0; i < n; i++) {
		mval = max(mval, -ps[i] + a[i]);
		ans = max(ans, ps[i + 1] - a[i] + mval);
	}
	cout << ans << endl;
}

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