Does any one know any problem about decompositioning graphs to certain subgraphs(such az triangle,star,clique or ...) in online judges?? Please give me links of them Thank you

Hi.I have no idea for solving this problem.please help me. https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=642

https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2397 it is a level 4 problem in uva online judge about segment tree.i used segment tree with lazy updates but i got time limit for 20 times!can any one help me?does this problem have some particular tip?

Does anyone have a good tutorial for 2sat?

hi! this is my code for the 3rd question of bronze division of usaco january contest. http://paste.ubuntu.com/6763413/ it compiled for 6 seconds in my computer and 0.6 seconds in my friends computer!!! i use dev c++ and he uses gvim. what is the reason of this big different???? excuse me for my english:(