目录知识点：二分匹配、贪心、思维题目输入输出样例输入输出题意思路代码知识点：二分匹配、贪心、思维题目Consider a town where all the streets are one-way and each street leads from one intersection to another. It is also known that starting from an inter

目录题目输入输出样例输入1输出1输入2输出2提示题意思路代码题目Not long ago Billy came across such a problem, where there were given three natural numbers A, B and C from the range [1, N], and it was asked to check whether the equa