C++枚举4个TLE，60分！

#include <bits/stdc++.h>
using namespace std ;
int gcd ( int a , int b ) {
    int maxn = max ( a , b ) , minn = min ( a , b ) ;
    while ( maxn % minn != 0 ) {
        int n = maxn ;
        maxn = minn , minn = n % minn ;
    }
    return minn ;
}
int lcm ( int a , int b ) {
    return a * b / gcd ( a , b ) ;
}
int main () {
    int x , y , ans = 0 ;
    cin >> x >> y ;
    for ( int i = x ; i <= y ; i ++ ) {
        for ( int j = x ; j <= y ; j ++ ) {
            if ( gcd ( i , j ) == x && lcm ( i , j ) == y ) ans ++ ;
        }
    }
    cout << ans ;
    return 0 ;
}