Submission #136653

#	Time	Username	Problem	Language	Result	Execution time	Memory
136653		junodeveloper	Art Exhibition (JOI18_art)	C++14	100 / 100	274 ms	24824 KiB

art

#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
int n;
ll s[500010];
pll a[500010];
int main() {
	scanf("%d",&n);
	int i;
	for(i=1;i<=n;i++) {
		scanf("%lld%lld",&a[i].fi,&a[i].se);
	}
	sort(a+1,a+n+1);
	for(i=1;i<=n;i++) {
		s[i]=s[i-1]+a[i].se;
	}
	ll mx=-9e18,res=-9e18;
	for(i=n;i>=1;i--) {
		mx=max(mx,s[i]-a[i].fi);
		res=max(res, mx-s[i-1]+a[i].fi);
	}
	printf("%lld",res);
	return 0;
}

Compilation message (stderr)

art.cpp: In function 'int main()':
art.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
art.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld",&a[i].fi,&a[i].se);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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