import std.algorithm;
import std.array;
import std.ascii;
import std.bigint;
import std.complex;
import std.container;
import std.conv;
import std.functional;
import std.math;
import std.range;
import std.stdio;
import std.string;
import std.typecons;

auto readInts() {
	return array(map!(to!int)(readln().strip().split()));
}
auto readInt() {
	return readInts()[0];
}
auto readLongs() {
	return array(map!(to!long)(readln().strip().split()));
}
auto readLong() {
	return readLongs()[0];
}

void readlnTo(T...)(ref T t) {
    auto s = readln().split();
    assert(s.length == t.length);
    foreach(ref ti; t) {
        ti = s[0].to!(typeof(ti));
        s = s[1..$];
    }
}

const real eps = 1e-10;

const long p = 1_000_000_000 + 7;

bool test(ref long[] h, long a, long b, long n) {
    long m = 0;
    foreach(hi; h) {
        auto r = max(0, (hi - b*n));
        m += (r+(a-b)-1)/(a-b);
    }
    return m <= n;
}

void main(){
    long n, a, b;
    readlnTo(n, a, b);
    long[] h;
    foreach(i; iota(n)) {
        h ~= readLong();
    }
    long u = long.max/2;
    long l = 0;
    while(l+1 < u) {
        auto m = (u+l)/2;
        if(test(h, a, b, m)) {
            u = m;
        } else {
            l = m;
        }
    }
    writeln(u);
}

