前言： 在16位环境下，int/unsigned int 占16位，long/unsigned long占32位 在32位环境下，int占32位，unsigned int占16位，long/unsigned long占32位何时需要使用： long 和 int 范围是[-2^31,2^31)，即-2147483648~2147483647，而unsigned范围是[0,2^32)，即0~4294967295，所以常规的32位整数只能够处理40亿左右，当遇到比40亿大的多的数就要用到64位。64位使用范围： 不同的编译器对64位整数的扩展有所不同，VC使用__int64/unsigned... Read More
MatrixTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1011Accepted Submission(s): 348Problem DescriptionMachines have once again attacked the kingdom of Xions. The kingdom of Xions has N cities and N-1 bidirectional roads. The road network is such Read More
HeroTime Limit: 6000/3000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 860Accepted Submission(s): 427Problem DescriptionWhen playing DotA with god-like rivals and pig-like team members, you have to face an embarrassing situation: All your teammates are killed, and yo Read More
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cin与cout一：标准输入函数cin 它是代表标准的输入设备--键盘,它是属于流的，他的用法和流的用法是一样的。也就是：cin>>变量; 输入多个变量可以写在一行，如:cin>>x>>y>>z; 这样写不好看，一般在输入语句的前面，都要做一个提示，”请输入×××”。 另外，这个函数是不用带地址符号"&"的，也不用写明变量类型，千万不要跟scanf混淆。当然也不检查变量输入是否合法。如：int i;cout<<"please input a number:" Read More
Meeting point-2Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 550Accepted Submission(s): 322Problem DescriptionIt has been ten years since TJU-ACM established. And in this year all the retired TJU-ACMers want to get together to celebrate the tenth Read More