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

#define rd() ({long _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})

char rbuf[1<<25];
char wbuf[1<<25];

int main(){
	char*rend=rbuf+read(0,rbuf,sizeof rbuf);
	char*rp=rbuf;
	long n=rd();
	long k=rd()-1;
	long a=0;
	long b=n;
	long d=1;
	char*p0=rp;
	char*p1=rp;
	char*p2;
	long u=rd();
	while(a<=k&&k<b){
		p2=p1;
		p1=rp;
		long v=rd();
		if(u==v){
			++d;
		}else{
			if(u<v){
				b-=d;
			}else{
				a+=d;
			}
			u=v;
			d=1;
		}
	}
	char*wp=wbuf;
	memcpy(wp,p0,p2-p0);
	wp+=p2-p0;
	memcpy(wp,p1,rend-p1);
	wp+=rend-p1;
	write(1,wbuf,wp-wbuf);
	_exit(0);
}