Problem 1001 will T == S?

bassistdante | 2015-10-31 19:05:56Author
RT
OMG_wc | 2015-10-31 19:06:25# 1
同问
同问。。。。。。
admin | 2015-10-31 19:07:05# 2
1<=S,T<=N,这就是有关S和T的所有约定