Submission #1034006

#	Time	Username	Problem	Language	Result	Execution time	Memory
1034006		cowwycow	Art Exhibition (JOI18_art)	C++14	100 / 100	149 ms	20564 KiB

art

#pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define name "aaaaaa"
using ll = long long;
using pll = pair<ll, ll>;
using ld = long double;

void file(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    if(fopen(name".inp", "r")) {
        freopen(name".inp", "r", stdin);
        freopen(name".out", "w", stdout);
    }
}

const int maxn = 5e5 + 5;

pll a[maxn];

ll pre[maxn];

void solve (){
	int n; cin >> n;
	for(int i = 1; i <= n; i++){
		cin >> a[i].first >> a[i].second;
	}
	sort(a + 1, a + n + 1);
	for(int i = 1; i <= n; i++){
		a[i].second = a[i - 1].second + a[i].second;
	}
	ll dis = 1e18, res = 0;
	for(int i = 1; i <= n; i++){
		dis = min(dis, a[i - 1].second - a[i].first);
		res = max(res, a[i].second - a[i].first - dis);
	}
	cout << res;
}

int main(){
    file();
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
}

Compilation message (stderr)

art.cpp: In function 'void file()':
art.cpp:12:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         freopen(name".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
art.cpp:13:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         freopen(name".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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