import sys,collections;sys.setrecursionlimit(10**7)
def Is(): return [int(x) for x in sys.stdin.readline().split()]
def Ss(): return sys.stdin.readline().split()
def I(): return int(sys.stdin.readline())
def S(): return input()

n,m,x = Is()

if x > n-m+2:
    print("YES")
else:
    print("NO")