first i submitted using vector (i have done this earlier in other problems successfully :) ) but got runtime error & same code i submitted using structure(everything was same except i stored the value in struct variable instead of vector ) & .... got AC . lol !!
http://www.codechef.com/viewsolution/3160692 (using vector)
http://www.codechef.com/viewsolution/3160968 (using structure)
i'd appreciate if anyone willing to answer .... :)