1 #include <iostream>
 2 #include <stdio.h>
 3 #include <cmath>
 4 using namespace std;
 5 
 6 int main()
 7 {
 8     int n;
 9     while(scanf("%d",&n)!=EOF){
10         int sum = 0;
11         for(int i=0;i<=sqrt(n);i++){
12             int j = n-i*i;
13             double t = sqrt(j);
14             if(t-int(t)==0){ //开方成功
15                 if(i!=0 && j!=0)
16                     sum+=4;
17                 else if(i==0 || j==0)
18                     sum+=2;
19             }
20         }
21         printf("%d\n",sum);
22     }
23     return 0;
24 }