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[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y$ [1 X# M. l% P7 ~! n4 F
1 C: W9 w& W$ |% ]9 w. K6 \: E公仔箱論壇if x = 111 y = 2222, you number is 111-2222 |