AtCoderD - Querying Multiset 优先队列

Posted 2021-10-30 karshey

D

典型的优先队列题。如果每次都排序的话绝对T。

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
#define pb push_back
#define fi first
#define se second
#define mem(a,x) memset(a,x,sizeof(a));
#define db double 
#define fir(i,a,n) for(int i=a;i<=n;i++)
//======================
const int N=2e5+10;
int x;ll y;ll ans,add;
priority_queue<ll,vector<ll>,greater<ll>>pq;//从小到大 
int main()
{
	int t;scanf("%d",&t);
	while(t--)
	{
		scanf("%d",&x);
		if(x==1||x==2) scanf("%d",&y);
		
		if(x==1) 	pq.push(y-add);
		else if(x==2) add+=y;
		else 
		{
			ans=pq.top();
			pq.pop();
			cout<<1ll*(ans+add)<<endl;
		}
	}
	return 0; 
}