Wow, an other practice contest came out :^D here’s the first problem, very simple solution :^)
from __future__ import with_statement def solve(w,b): return "BLACK" if b%2==1 else "WHITE" def eatFile(fin, fout): with file(fin,'r') as f1: N = int(f1.readline().replace("\n",'')) with file(fout,'w') as f2: for case in xrange(1,N+1): w,b = [int(i) for i in f1.readline().replace("\n",'').split(' ')] s = solve(w,b) #print "Case #%d: %s" % (case, s) f2.write("Case #%d: %s\n" % (case, s)) eatFile('A-large-practice.in','A-large-practice.out.txt')