hello's submissions for 1180 级数求和

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AC | PERL
hello
on May 9, 2009, 2:10 p.m.
0.02s
468.00 KB
0 / 0
AC | PERL
hello
on Dec. 29, 2006, 4:45 p.m.
0.00s
468.00 KB
0 / 0
AC | PERL
hello
on Dec. 28, 2006, 4:28 p.m.
0.00s
468.00 KB