Submission #134240

#	Time	Username	Problem	Language	Result	Execution time	Memory
134240		Boxworld	Art Exhibition (JOI18_art)	C++14	100 / 100	277 ms	20984 KiB

art

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int maxN=500010;
struct art{ll size,val;}a[maxN];
bool cmp(art x,art y){return x.size<y.size;}
int main(){
	int n;
	scanf("%d",&n);
	for (int i=0;i<n;i++)scanf("%lld%lld",&a[i].size,&a[i].val);
	sort(a,a+n,cmp);
	ll ans=0,best=a[0].size,val=0;
	for (int i=0;i<n;i++){
		val+=a[i].val;
		ans=max(ans,val+best-a[i].size);
		best=max(best,a[i+1].size-val);
	}
	printf("%lld\n",ans);
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
art.cpp:10:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i=0;i<n;i++)scanf("%lld%lld",&a[i].size,&a[i].val);
                       ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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