CodeForces 681C Heap Operations（模拟）

　　比较简单的模拟，建议使用STL优先队列。

代码如下：

#include<iostream>
#include<cstdio>
#include<cstring>
#include<queue>
using namespace std;
#define N 1000010
char outs[N][20];
int outn[N];
priority_queue<int,vector<int>,greater<int> >que;
int main()
{
    int n,num;
    int tot = 0;
    while(!que.empty()) que.pop();
    char op[20];
    scanf("%d",&n);
    getchar();
    while(n--)
    {
        scanf("%s",op);
        if(!strcmp(op,"insert"))
        {
            scanf("%d",&num);
            strcpy(outs[tot],op);
            outn[tot++] = num;
            que.push(num);
        }
        else if(!strcmp(op,"removeMin"))
        {
            if(que.empty())
            {
                strcpy(outs[tot],"insert");
                outn[tot++] = 0;
                que.push(0);
            }
            strcpy(outs[tot],op);
            outn[tot++] = -1;
            que.pop();
        }
        else if(!strcmp(op,"getMin"))
        {
            scanf("%d",&num);
            bool have = false;
            while(!que.empty())
            {
                int tmp = que.top();
                if(tmp < num)
                {
                    strcpy(outs[tot],"removeMin");
                    outn[tot++] = -1;
                    que.pop();
                }
                if(tmp == num)
                {
                    have = true;
                    break;
                }
                if(tmp > num) break;
            }
            if(!have)
            {
                strcpy(outs[tot],"insert");
                outn[tot++] = num;
                que.push(num);
            }
            strcpy(outs[tot],"getMin");
            outn[tot++] = num;
        }
    }
    printf("%d
",tot);
    for(int i = 0; i < tot; i++)
    {
        if(!strcmp(outs[i],"removeMin")) printf("%s
",outs[i]);
        else printf("%s %d
",outs[i],outn[i]);
    }
    return 0;
}