import math

if __name__ == '__main__':
    n, k = map(int, input().split())
    numbers = [int(token) - 1 for token in input().split()]
    position = { number : idx for idx, number in enumerate(numbers)}

    cnt = 0
    for idx in range(len(numbers)):
        if numbers[idx] == idx: continue
        numbers[idx], numbers[position[idx]] = numbers[position[idx]], numbers[idx]
        cnt += 1
    
    print("YES" if cnt <= k and k % 2 == cnt % 2 else "NO")