import std.stdio, std.string, std.conv, std.algorithm, std.numeric;
import std.range, std.array, std.math, std.typecons, std.container, core.bitop;

void main() {
    int L = readln.chomp.to!int;
    readln;
    readln.split.to!(int[]).sort().cumulativeFold!"a+b".filter!(x => x<=L).count.writeln;
}