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

#define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define wt(v) {unsigned _z=v;do*--wp=_z%10+48;while(_z/=10);}
#define rep3(v,s,e) for(long v=s;v<e;++v)

char wbuf[1<<25];

int main(){
	char*wp=wbuf+sizeof wbuf;
	char*mmap();
	char*rp=mmap(0l,1l<<25,1,2,0,0ll);
	long n=rd();
	long x=rd();
	rep3(i,1,n){
		long a=rd();
		while(x>a){
			--x;
			*--wp=' ';
			wt(i);
		}
	}
	{
		while(x>0){
			--x;
			*--wp=' ';
			wt(n);
		}
	}
	write(1,wp,wbuf+sizeof wbuf-wp);
	_exit(0);
}