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B. Mr. Kitayuta’s Colorful Graph 链接：Mr. Kitayuta’s Colorful Graph time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Mr. Kitayuta has just bought an undirected graph consisting of n vertices and m edg

B. Amr and Pins 链接：Amr and Pins time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Amr loves Geometry. One day he came up with a very interesting problem. Amr has a circle of radius r and center in poin