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1017. Queueing at Bank (25)时间限制400 ms内存限制65536 kB代码长度限制16000 B判题程序Standard作者CHEN, YueSuppose a bank has K windows open for service. There is a yellow line in front of the windows which devides the wai...

点击打开链接：https://www.patest.cn/contests/pat-a-practise/1013并查集：主要是find和union函数：void unionn(int a,int b){ int x=find(a); int y=find(b); if(x!=y){ pre[x]=y; } }int find(int k){ ...

1.1020:1020. Tree Traversals (25)时间限制400 ms内存限制65536 kB代码长度限制16000 B判题程序Standard作者CHEN, YueSuppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder tr...