#include <queue> queue 头文件queuequeue主要包括循环队列queuequeue和优先队列(也就是堆)prioritypriority_queuequeue两个容器。优先队列默认是大根堆,需要重载小于号。 声明方式 queue<int> q; priority_queue<int> q; q.size() 返回队列/堆大小 q.empty() 返回队
小根堆 priority_queue<int, vector<int>, greater<int> > 或: structrec {intid;doublevalue; };booloperator<(constrec &a,constrec &b) {returna.value >b.value; } 懒惰删除法
#include<bits/stdc++.h> #include <queue> using namespace std; priority_queue<int>pq; int x, n, ans, y, z; int main() { cin >> n; for (int i = 0; i < n; i++) { cin >> x; pq.push(x); } while (!pq.empty()) { if (pq.size() == 1) { ans += 2; break;...
•创建以起点到该点的距离为排序关键码(Key)的优先级队列(Priority Queue)并将起点压入其中(起点到自身的距离为0),变更起点状态为“在队列中”。•每次弹出队列头部元素,即取当前除“已出队”节点外离起点最近的 {未访问/在队列中} 节点,将其状态设置为“已出队”并记录距离值 D_start2popped 为起点到该...
priority_queue<int,vector<int>,greater<int> >q; answer=0; for(int i=1;i<=n;i++) { scanf("%d",&a); q.push(a); } for(int i=1;i<=n-1;i++) { x1=q.top(); q.pop(); x2=q.top(); q.pop(); sum=x1+x2; q.push(sum); answer=answer+sum; } printf("%lld\n",...
=EOF) { priority_queue<complex>queue; //priority<Elemtype>myQueue string str; for(int i=0;i<n;i++) { cin>>str; if(str=="Pop") { if(queue.empty()) { printf("empty\n"); } else { printf("%d+i%d\n",queue.top().real,queue.top().image); queue.pop(); printf("SIZE = ...
#include #include #include using namespace std struct node friend bool operator< (node n1, node n2) return n2.cost < n1.cost int index,cap,cost priority_queue q bool mark[101] int p int map vector list int main() //freopen("debug \\in.txt","r",stdin) int i,j,x,y,num,total...
public HandlerThread(String name, int priority) { super(name); mPriority = priority; } /** * Call back method that can be explicitly overridden if needed to execute some * setup before Looper loops. */ protected void onLooperPrepared() { ...
#include #include #include using namespace std; struct node { friend bool operator< (node n1,node n2) { return n2.cost < n1.cost; } int index,cap,cost; }; priority_queue q; bool mark[1001][101]; int p[1001]; int map[1001][1001]; vector list[1001]; int ma
{ int i; priority_queue < node, vector , greater > que1; priority_queue < node, vector , less > que2; node da[5]; for(i = 0;i < 5;i++) { da[i].x = i; da[i].y = i; da[i].w = i; que1.push(da[i]); que2.push(da[i]); } A //遍历队列1 { cout< #...