#include<bits/stdc++.h>
main(){
    int N,K;
    int D[200000];
    scanf("%d%d",&N,&K);
    for(int i = 0;i < N;i++){
        scanf("%d",&D[i]);
    }
    int count = 0,scnt = 0;
    for(int i = 0;i < N;i++){
        if(D[i]==i+1)continue;
        count++;
        if(D[D[i]-1]==i+1)scnt++;
    }
    count -= scnt/2;
    if(count > K){
        printf("NO\n");
        return 0;
    }
    printf("%s\n",(K-count)%2?"NO":"YES");
}