import sys
readline = sys.stdin.readline
def solve():
    n, k = map(int, input().split())
    d = [int(i) - 1 for i in readline().split()]
    for i in range(n):
        while d[i] != i:
            d[d[i]], d[i] = d[i], d[d[i]]
            k -= 1
        if k < 0:
            return "NO"
    return "YES" if k % 2 == 0 else "NO"
print(solve())