#include <stdio.h>
int main(void){
    long long int N,K,i,count,k,p;
    scanf("%lld",&N);
    scanf("%lld",&K);
    long long int hairetu[N-1];
    for(i=0;i<=N-1;i++)
    {
        scanf("%lld",&hairetu[i]);
    }
    count=0;
    for(i=0;i<=N-1;i++)
    {   
     if(i  ==! hairetu[i])
{
    p=hairetu[i];
        while(i == !hairetu[p])
        {
           k=hairetu[p];
            hairetu[p]=p;
           p=k;
            count++;
        }
    }
}
    if((K-count)%2==0 && K-count>=0)
    {
        printf("YES");
    }
    else
    {
        printf("NO");
    }
}