#!/usr/bin/env python3


def judge(n, k, ds):
    ps = {d: i for i, d in enumerate(ds)}
    c = 0
    for i in range(n):
        if ds[i] != i:
            j = ps[i]
            ds[i], ds[j] = ds[j], ds[i]
            ps[ds[i]] = i
            ps[ds[j]] = j
            c += 1
    return c <= k and (c + k) % 2 == 0


def main():
    n, k = (int(x) for x in input().split())
    ds = [int(x) - 1 for x in input().split()]
    print("YES" if judge(n, k, ds) else "NO")


if __name__ == '__main__':
    main()