#include <iostream>

using namespace std;

typedef long long LL;

int n, cnt;
LL k;

int main() {
    scanf("%d%lld", &n, &k);
    for (int i = 1, x; i <= n; ++i) {
        scanf("%d", &x);
        if (x != i) ++cnt;
    }

    if (cnt == 0) {
        puts(k % 2 == 0 && k >= 2 ? "YES" : "NO");
    } else if (cnt == 2) {
        puts(k % 2 == 1 ? "YES" : "NO");
    } else if (cnt == 3) {
        puts(k % 2 == 0 && k >= 2 ? "YES" : "NO");
    } else {
        puts(k >= (cnt + 1) / 2 ? "YES" : "NO");
    }

    return 0;
}