摘要：
Happy Number UVA - 10591 Let the sum of the square of the digits of a positive integer S0 be represented by S1. In a similar way, let the sum of the s 阅读全文
摘要：
D. World of Darkraft - 2 time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Roma found a ne 阅读全文
摘要：
D. Jeff and Furik time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Jeff has become friends 阅读全文