Submission #936325

#	Time	Username	Problem	Language	Result	Execution time	Memory
936325		DobromirAngelov	Art Exhibition (JOI18_art)	C++14	100 / 100	148 ms	26804 KiB

art

#include<bits/stdc++.h>
#define endl '\n'
#define fi first
#define se second

using namespace std;

const int MAXN=5e5+5;

int n;
pair<long long,int> a[MAXN];
long long d[MAXN];
int suffMax[MAXN];

int main()
{
ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);

cin>>n;
for(int i=1;i<=n;i++) cin>>a[i].fi>>a[i].se;

sort(a+1,a+n+1);

for(int i=1;i<=n;i++) d[i]=d[i-1]+a[i].se;
for(int i=1;i<=n;i++) d[i]-=a[i].fi;

suffMax[n]=n;
for(int i=n-1;i>=1;i--)
{
    suffMax[i]=suffMax[i+1];
    if(d[i]>d[suffMax[i+1]]) suffMax[i]=i;
}

long long ans=a[n].se;
for(int i=1;i<n;i++)
{
    long long cur=a[i].se;
    cur=max(cur, d[suffMax[i+1]]-d[i-1]-a[i-1].fi+a[i].fi);
    ans=max(ans, cur);
}

cout<<ans<<endl;

return 0;
}

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