Hdoj 4006 The kth great number (priority queue)

The kth great number

Time limit:2000/1000 MS (java/others) Memory limit:65768/65768 K (java/others)
Total submission (s): 9415 Accepted Submission (s): 3756

Problem Descriptionxiao Ming and Xiao Bao is playing a simple Numbers game. In a round Xiao Ming can choose to write down a number, or ask Xiao Bao What's the kth great number is. Because the number written by Xiao Ming are too much, Xiao Bao is feeling giddy. Now, try-to-help Xiao Bao.

Inputthere is several test cases. For each test case, the first line of input contains the positive integer n, K. then n lines follow. If Xiao Ming Choose to write down a number, there'll be is a "I" followed by a number that Xiao Ming would write down. If Xiao Ming Choose to ask Xiao Bao, there would be a "Q" and then your need to output the kth great number.

Outputthe output consists of one integer representing the largest number of islands that all lie on one line.

Sample Input8 3I 1I 2I 3QI 5QI 4Q

Sample Output123 HintXiao Ming won ' t ask Xiao Bao the kth great number when the number of the written number is smaller than K. (1=<k<=n& lt;=1000000).

Source the 36th ACM/ICPC Asia regional Dalian site--online Contest

#include <queue>#include<vector>#include<iostream>using namespacestd;intMain () {Charop[Ten]; intN, K, num;  while(Cin>>n >>k) {//Priority_queue<int, Vector<int>, cmp>q;priority_queue<int, vector<int, greater<int> >q;//small elements in the first team, the elements in order;         for(intI=0; i<n; i++) {cin>>op; if(op[0]=='I') {cin>>num; if(Q.size () <k) {Q.push (num); Continue; }                if(q.size () = =k) {if(num>Q.top ())                    {Q.pop (); Q.push (num); }                    }            }                Else{cout<<q.top () <<'\ n'; }        }    }    return 0;}

#include <vector>#include<queue>#include<iostream>using namespacestd;intMain () {priority_queue<int, vector<int> > Q;//default large elements in the team head;Q.push (Ten); Q.push (8); Q.push ( -); cout<<q.top () <<'\ n'; return 0;}

Hdoj 4006 The kth great number (priority queue)