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C. Ray Tracing 题目连接: http://codeforces.com/contest/724/problem/C Description oThere are k sensors located in the rectangular room of size n × m meters 阅读全文
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B. Batch Sort 题目连接: http://codeforces.com/contest/724/problem/B Description output standard output You are given a table consisting of n rows and m co 阅读全文
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A. Checking the Calendar 题目连接: http://codeforces.com/contest/724/problem/A Description You are given names of two days of the week. Please, determine 阅读全文