B'You are fishing with polar bears Alice and Bob. While waiting for the fish to bite, the polar bears get bored. They come up with a game. First Alice and Bob each writes a 01-string (strings that only contain character "0" and "1") a and b. Then you try to turn a into b using two types of operations: You can use as many operations as you want. The problem is, is it possible to turn a into b? The parity of a 01-string is 1 if there is an odd number of "1"s in the string, and 0 otherwise. The first line contains the string a and the second line contains the string b (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89|a|, xe2 x80 x89|b| xe2 x80 x89 xe2 x89 xa4 xe2 x80 x891000). Both strings contain only the characters "0" and "1". Here |x| denotes the length of the string x. Print "YES" (without quotes) if it is possible to turn a into b, and "NO" (without quotes) otherwise. In the first sample, the steps are as follows: 01011 xe2 x80 x89 xe2 x86 x92 xe2 x80 x891011 xe2 x80 x89 xe2 x86 x92 xe2 x80 x89011 xe2 x80 x89 xe2 x86 x92 xe2 x80 x890110'...