摘要：
差分约束可以求出这样的不等式组的 \(\{x_i\}\) 的一组整数解 \[ x_{a_1}-x_{b_1} \le c_1\\ x_{a_2}-x_{b_2} \le c_2\\ \vdots\\ x_{a_n}-x_{b_n} \le c_n\\ \] 对于一个不等式可以移个项 \(x_{a_i 阅读全文
摘要：
题目描述 Manao came up with a solution that produces the correct answers but is too slow. You are given the pseudocode of his solution, where the function 阅读全文