| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1347995 | Faisal_Saqib | Potatoes and fertilizers (LMIO19_bulves) | C++20 | 90 ms | 12472 KiB |
#include <iostream>
#include <queue>
using namespace std;
typedef long long ll;
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n;
cin>>n;
int a[n],b[n];
ll p[n+2]={0};
for(int i=0;i<n;i++)
{
cin>>a[i]>>b[i];
p[i+1]=p[i]+a[i]-b[i];
}
// p[n]>=p[i]>=0
// p[i]<=p[i+1]
ll fnl=0;
for(int i=1;i<=n;i++)
{
if(p[i]<0)
{
fnl-=p[i];
p[i]=0;
}
else if(p[i]>p[n])
{
fnl+=p[i]-p[n];
p[i]=p[n];
}
}
priority_queue<ll> pq;
for(int i=0;i<n;i++)
{
pq.push(p[i]);
pq.push(p[i]);
fnl+=(pq.top()-p[i]);
pq.pop();
}
cout<<fnl<<endl;
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