警示后人WA on #4

可能为0!\ 配上样例&my满分代码:\ 4.in:

12 4096

4.out:

0

在洛谷,\ 享受CopyCoding的快乐

#include<bits/stdc++.h>
#define int long long
using namespace std;
void read(int &x){
    x=0;char c=getchar();bool f=0;
    while(c<48||c>'9'){
        if(c=='-')f=1;
        c=getchar();
    }do{x=(x<<3)+(x<<1)+(c^48),c=getchar();}while(c>=48&&c<='9');
    x=f?-x:x;
}
int x,y,a;
signed main(){
    read(x),read(y);
    if(y%x){cout<<0;return 0;}
    for(int i=1;i<=y/x;i++){
        if(y/x%i==0&&__gcd(i,y/x/i)==1)a++;
    }cout<<a;
    return 0;
}