Submission #678531

#	Time	Username	Problem	Language	Result	Execution time	Memory
678531		anhduc2701	Art Exhibition (JOI18_art)	C++17	100 / 100	194 ms	12068 KiB

art

/*
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("unroll-loops")
*/
#include<bits/stdc++.h>
#define int long long
#define all(x) x.begin(), x.end()
#define len(x) ll(x.size())
#define eb emplace_back
#define PI 3.14159265359
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
#define BIT(x,i) (1&((x)>>(i)))
#define MASK(x) (1LL<<(x))
#define task "tnc"  
using namespace std;
typedef long long ll;
const ll INF=4e18;
const int maxn=1e6+5;
const int mod=1e9+7;
const int mo=998244353;
using pi=pair<ll,ll>;
using vi=vector<ll>;
using pii=pair<pair<ll,ll>,ll>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n;
pair<int,int> a[500005];
int pref[500005];
signed main()
{
	cin.tie(0),cout.tie(0)->sync_with_stdio(0);
    //freopen(task".inp" , "r" , stdin);
    //freopen(task".out" , "w" , stdout);
    cin>>n;
	int ans=0;
	for(int i=1;i<=n;i++){
		cin>>a[i].fi>>a[i].se;
		ans=max(ans,a[i].se);
	}
	sort(a+1,a+1+n);
	int ma0=-INF;
	int vt=0;
	for(int i=1;i<=n;i++){
		pref[i]=pref[i-1]+a[i].se;
		ans=max(ans,pref[i]-a[i].fi+ma0);
		if(a[i].fi-pref[i-1]>ma0){
			ma0=a[i].fi-pref[i-1];
		}
	}
	cout<<ans;
    return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:47:6: warning: unused variable 'vt' [-Wunused-variable]
   47 |  int vt=0;
      |      ^~

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