n = input().split()
a = int(n[0])
b = int(n[1])
c = int(n[2])
su = a + b + c
if su % 2 == 0 and a + b >= c:
    print('Yes')
if su % 2 == 0 and a + b < c:
    print('No')
if su % 2 == 1:
    print('Bad')

/**************************************************************
	Problem: 1677
	User: admin
	Language: Python
	Result: Accepted
	Time:136 ms
	Memory:34480 kb
****************************************************************/