Problem 1002 s可能等于T吗

lgr7451 | 2015-10-31 19:38:36Author
等于该输出什么
20130738 | 2015-10-31 19:49:35# 1
-1
wohenshuai | 2015-10-31 19:50:03# 2
1 1 1呢
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