Submission #1326970

#	Time	Username	Problem	Language	Result	Execution time	Memory
1326970		tkm_algorithms	Art Exhibition (JOI18_art)	C++20	100 / 100	128 ms	12096 KiB

art

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
#define int ll
using P = pair<int, int>;
#define all(x) x.begin(), x.end()
#define rep(x,s,e) for (auto x=(s)-((s)>(e));x!=(e)-((s)>(e));((s)<(e)?x++:x--))
#define sz(x) (int)x.size()
const char nl = '\n';
const int mod = 998244353;

void solve() {
	int n; cin >> n;
	vector<P> a(n);
	for (auto &i: a)cin >> i.first >> i.second;
	
	sort(all(a));
	vector<int> dp(n);
	dp[0] = a[0].first+a[0].second;
	
	int res = a[0].second;
	rep(i, 1, n) {
		res = max(res, a[i].second);
		res = max(res, dp[i-1]-a[i].first+a[i].second);
		dp[i] = max(dp[i-1]+a[i].second, a[i].first+a[i].second);
	}
	
	cout << res;
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    solve();
    return 0;
}

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