import std.stdio;
import std.string;
import std.conv;
import std.algorithm;

void main()
{
	auto N = to!int(split(readln())[0]);
	auto input = split(readln());
	auto D = to!int(input[0]), X = to!int(input[1]);
	
	int[] A;
	
	int n = X;
	
	foreach (i; 0..N) {
		n += (D-1) / ( to!int(split(readln())[0]) ) + 1;
	}
	
	writeln(n);
}