2018 CCPC Online Contest

A. Buy and Resell

solved by CSL. 2:42(+1)

C. Dream

solved by Moira. 1:34(+)

D. Find Integer

solved by Moira. 0:24(+)

E. GuGu Convolution

upsolved by CSL. (-3)

G. Neko's loop

sovlved by ybmj. 4:17(+)

I. Tree and Permutation

solve by ybmj. 2:37(+1)

J. YJJ's Salesman

solved by CSL. 1:28(+2)