N,M,C=map(int,input().split())

if N%2==1 and M%2==1:
    print("NO")
elif N==1:
    if C==1 or C==M:
        print("YES")
    else:
        print("NO")
elif M==1:
    if C==1 or C==N:
        print("YES")
    else:
        print("NO")
else:
    print("YES")