The 18th Zhejiang University Programming Contest Sponsored by TuSimple -C Mergeable Stack
题目链接
题意:
题意简单,就是一个简单的数据结构,对栈的模拟操作,可用链表实现,也可以用C++的模板类来实现,但是要注意不能用cin cout,卡时间!!!
代码:
#include <stdio.h>
#include <iostream>
#include <vector>
#include <deque>
#include <list>
#define IO ios::sync_with_stdio(0);\
cin.tie();cout.tie();
using namespace std;
*+;
list <int > q[N];
int main()
{
int T;
scanf("%d",&T);
//cin >> T;
while(T--)
{
int n,q1;
scanf("%d%d",&n,&q1);
; i <= n; i++)
q[i].clear();
while(q1--)
{
int op,s,v,t;
scanf("%d",&op);
)
{
scanf("%d%d",&s,&v);
q[s].push_back(v);
}
)
{
scanf("%d",&s);
if(q[s].empty())
{
//cout << "EMPTY" << endl;
printf("%s\n", "EMPTY");
}
else
{
//cout << q[s].back() <<endl;
printf("%d\n",q[s].back());
q[s].pop_back();
}
}
)
{
scanf("%d%d",&s,&t);
q[s].splice(q[s].end(),q[t]); //将s,t合并,并清除t中元素
//q[t].clear();
}
}
}
;
}
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