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C. Wizards and Numbers 题目连接: http://codeforces.com/problemset/problem/167/C Description In some country live wizards. They love playing with numbers. 阅读全文
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C. Fragile Bridges 题目连接: http://codeforces.com/contest/201/problem/C Description You are playing a video game and you have just reached the bonus leve 阅读全文
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B. Guess That Car! 题目连接: http://codeforces.com/contest/201/problem/B Description A widely known among some people Belarusian sport programmer Yura pos 阅读全文
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A. Clear Symmetry 题目连接: http://codeforces.com/contest/201/problem/A Description Consider some square matrix A with side n consisting of zeros and ones 阅读全文