传送门: https://ac.nowcoder.com/acm/contest/881/J 题目描述 Bobo has two fractions x/a and y/b. He wants to compare them. Find the result. 输入描述 The input consists of several test cases and is terminated by end-of-file. Each test case contains four integers x, a, y, b. x , y a , b There are at most te...