def election_result(N, T, A):
# 计算剩余票数
R = N - (T + A)

# 判断选举是否已经决定
if T > A + R or A > T + R:
    return "Yes"
else:
    return "No"

输入读取

N, T, A = map(int, input().split())

输出结果

print(election_result(N, T, A))