Submission #414680

#	Time	Username	Problem	Language	Result	Execution time	Memory
414680		hibye1217	Art Exhibition (JOI18_art)	C++17	0 / 100	1 ms	332 KiB

art

#include <bits/stdc++.h>
#define endl '\n'
#define fr first
#define sc second
#define all(v) v.begin(),v.end()
#define unq(v) sort( all(v) ); v.erase( unique( all(v) ), v.end() )
#define bout(x) cout << bitset<sizeof(x)*8>(x) << endl
#define mkp(a,b) make_pair(a,b)
#define gcd(a,b) __gcd(a,b)
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using cpl = complex<ld>;
const ld pi = 3.14159265358979323846264338327950288;
const ld tau = 2 * pi;
const int dx[4] = {0, 1, 0, -1}, dy[4] = {-1, 0, 1, 0};
const int ddx[8] = {0, 1, 1, 1, 0, -1, -1, -1}, ddy[8] = {-1, -1, 0, 1, 1, 1, 0, -1};
const int nx[8] = {1, 2, 2, 1, -1, -2, -2, -1}, ny[8] = {-2, -1, 1, 2, 2, 1, -1, -2};

//#define DEBUG

pll arr[500020];
ll prf[500020];
ll res[500020];
ll mx[500020];

void Main(){
	int n; cin >> n;
	for (int i = 1; i <= n; i++){
		cin >> arr[i].fr >> arr[i].sc;
	}
	sort(arr+1, arr+n+1, [](pll a, pll b){
		return a.fr < b.fr;
	});
	for (int i = 1; i <= n; i++){ prf[i] = prf[i-1] + arr[i].sc; }
	for (int i = 1; i <= n; i++){ res[i] = prf[i] - arr[i].fr; }
	mx[n+1] = 1e18;
	for (int i = n; i >= 1; i--){ mx[i] = max(mx[i+1], res[i]); }
	ll ans = 0;
	for (int i = 1; i <= n; i++){
		ans = max(ans, mx[i] - res[i] + arr[i].sc);
	}
	cout << ans;
}

int main(){
#ifndef DEBUG
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
#endif
	cout.setf(ios::fixed);
	cout.precision(0);
	Main();
}

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