Submission #127228

#	Time	Username	Problem	Language	Result	Execution time	Memory
127228		tuanasanh	Art Exhibition (JOI18_art)	C++11	100 / 100	267 ms	20984 KiB

art

#include<bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#define ii pair<int,int>
#define int long long
using namespace std;
const int N=5e5+5;
ii a[N];
int n,s=0,tmp=-N*1000,ans=-N*1000,u,v;
signed main(){
//	freopen(".inp","r",stdin);
//	freopen(".out","w",stdout);
//	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	scanf("%lld",&n);
	for(int i=0;i<n;i++){
		scanf("%lld %lld",&u,&v);
		a[i]={u,v};
	}
	sort(a,a+n);
	for(int i=0;i<n;i++){
		tmp=max(tmp,a[i].first-s);
		s+=a[i].second;
		ans=max(ans,s-a[i].first+tmp);
	}
	printf("%lld",ans);
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld",&n);
  ~~~~~^~~~~~~~~~~
art.cpp:16:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld %lld",&u,&v);
   ~~~~~^~~~~~~~~~~~~~~~~~~

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