Submission #800376

#	Time	Username	Problem	Language	Result	Execution time	Memory
800376		leeminhduc2	Potatoes and fertilizers (LMIO19_bulves)	C++17	100 / 100	167 ms	8476 KiB

bulves

///aureg109 orz
#include <bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define ii pair<int,int>
#define sz(x) (int) (x).size()
#define pb push_back
using namespace std;
template<class T1,class T2> bool maximize(T1 &a,T2 b) {return(a<b ? a=b,1:0);};
template<class T1,class T2> bool minimize(T1 &a,T2 b) {return(a>b ? a=b,1:0);};

int n;
ll d[500010],f;
void aureg109()
{
    cin >> n;
    for (int i=1;i<=n;i++)
    {
        ll a,b;
        cin >> a >>b;
        d[i]=d[i-1]+a-b;
    }
    priority_queue<ll> pq;
    assert(d[n]>=0);
    for (int i=1;i<=n;i++)
    {
        if (d[i]<0) f-=d[i],d[i]=0;
        else f+=d[i];
        pq.push(d[i]);
        pq.push(d[i]);
        pq.pop();
    }
    while(sz(pq))
    {
        f-=min(pq.top(),d[n]);
        pq.pop();
    }
    cout <<f;

}
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    aureg109();
}

• Subtask 1: 24 / 24
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 10 / 10
• Subtask 5: 36 / 36