제출 #939183

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
939183		vjudge1	Art Exhibition (JOI18_art)	C++17	100 / 100	146 ms	12524 KiB

art

//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")

#include<bits/stdc++.h>	

using namespace std;

#define all(a) a.begin(), a.end()                                                   
#define rall(a) a.rbegin(), a.rend()                 
#define sz(a) (int)a.size()
#define s second
#define f first
 
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
     
vector<pii> rid = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
vector<pii> dir = {{-1, -1}, {-1, 1}, {1, -1}, {1, 1}};
 
const int N = 1e6 + 1, mod = 1e9 + 7;

const ll inf = 1e18;
 
double eps = 1e-15;
                                                
bool flg = 0;

void slv() {
	int n;
	cin >> n;
	vector<pll> s;
	s.push_back({-inf, -inf});
	for (int i = 1; i <= n; i++) {
		ll a, b;
		cin >> a >> b;
		s.push_back({a, b});
	}
	sort(all(s));
	ll p[n + 1];
	p[0] = 0;
	for (int i = 1; i <= n; i++) 
		p[i] = p[i - 1] + s[i].s;
	ll mx = -inf, ans = -inf;
	for (int i = 1; i <= n; i++) {
		mx = max(mx, -p[i - 1] + s[i].f);	
		ans = max(ans, p[i] - s[i].f + mx);
	}  
	cout << ans;
}                                                                           
 
main() {
	//freopen("rsq.in", "r", stdin);                                                                                     
	//freopen("rsq.out", "w", stdout);                                                                                     
	ios_base::sync_with_stdio(0);	                                                                                       
	cin.tie(0);
	int tp = 1;
	if (flg) cin >> tp;
	while (tp--) {
		//cout << "Case #" << cur++ << ": ";
		slv();
	}
}
//wenomechainsama                                              

컴파일 시 표준 에러 (stderr) 메시지

art.cpp:54:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   54 | main() {
      | ^~~~

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