Problem statement is here: http://acm.timus.ru/problem.aspx?space=1&num=1877
public void solve(int testNumber, InputReader in, OutputWriter out) { int firstLock = in.nextInt(); int secondLock = in.nextInt(); if(firstLock%2==0 || secondLock%2==1) { out.println("yes"); return; } out.println("no"); }