SGU 102. Coprimes 欧拉函数 2017-10-17 15:46 | 411 | 数论,欧拉函数,算法 | Dewct 97 字 | 1 分钟内 time limit per test: 0.25 sec. memory limit per test: 4096 KB For given integer N (1<=N<=104) find amount of positive numbers not greater than N that coprime with N. Let…