import sys
from typing import List, Tuple


def int1(x: str): return int(x) - 1


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    n, k = map(int, input().split())
    *d, = map(int1, input().split())
    vis = [False] * n
    ans = 0
    for i in range(n):
        if not vis[i]:
            c = i
            ans -= 1
            while not vis[c]:
                vis[c] = True
                c = d[c]
                ans += 1
    return 'YES' if ans <= k and ans % 2 == k % 2 else 'NO'


def _start():
    ret = main()

    if ret is not None:
        if isinstance(ret, List) or isinstance(ret, Tuple):
            print(*ret)
        else:
            print(ret)


if __name__ == '__main__':
    _start()