摘要：
开门人和关门人Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8878Accepted Submission(s): 4605Problem Description每天第一个到机房的人要把门打开，最后一个离开的人要把门关好。现有一堆杂乱的机房签 到、签离记录，请根据记录找出当天开门和关门的人。 Input测试输入的第一行给出记录的总天数N ( > 0 )。下面列出了N天的记录。 每天的记录在第一行给出记录的条目数M ( > 0 )， 阅读全文
摘要：
A + B Problem IITime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 165447Accepted Submission(s): 31605Problem DescriptionI have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.InputThe first line of 阅读全文