import std.stdio, std.array, std.string, std.conv, std.algorithm; import std.typecons, std.range, std.random, std.math, std.container; import std.numeric, std.bigint, core.bitop, core.stdc.stdio; void main() { auto N = readln.chomp.to!int; auto D = readln.split.map!(to!int).array; auto X = readln.split.map!(x => x.to!int.abs).array.reduce!(max); auto ans = int.max; foreach (d; D) { auto a = X / d * d; if (d > X) ans = min(ans, 2); else if (a == X) ans = min(ans, X/d); else if (find(D, X-a)) ans = min(ans, X/d+1); else ans = min(ans, X/d+2); } ans.writeln; }