#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

char*mmap();
#define RD(v) v=0;{int _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}

d[200001];

main(){
	char*rp=mmap(0l,1l<<28,1,2,0,0ll);
	int RD(n);
	long RD(k);
	for(int i=1;i<=n;++i){
		int RD(di);
		d[i]=di;
	}
	int c=0;
	for(int i=1;i<=n;++i){
		int s=d[i],t=d[s];
		while(d[s]=0,t=d[s=t]){
			++c;
		}
	}
	write(1,c>k|c+k&1?"NO ":"YES",3);
	_exit(0);
}