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