class UnionFind:
    def __init__(self, n):
        self.parent = [i for i in range(n)]
    def find(self, x):
        if self.parent[x] == x:
            return x
        self.parent[x] = self.find(self.parent[x])
        return self.parent[x]
    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)
        if x == y:
            return
        self.parent[x] = y

N, K = map(int, input().split())
D = list(map(int, input().split()))

uf = UnionFind(N + 1)

for i in range(N):
    uf.union(i + 1, D[i])

s = set(uf.find(i) for i in range(1, N + 1))
cnt = N - len(s)

yes = ans <= K and ans % 2 == K % 2
print('YES' if yes else 'NO')