Problem: STDDEV

https://www.codechef.com/problems/STDDEV

#include
#include <math.h>
using namespace std;

int main() {
int test;
cin>>test;
int n,sigma;
while(test–){
cin>>n>>sigma;
if(n==1)
{cout<<-1<<endl;continue;}
double n1 = (double)n;
double sigma1 = (double)sigma;
double num = n1sigma1;
double x = (n1-1)/n1 + (n1-1)
(n1-1)/n1;
x = sqrt(x);
num = num/x;
cout<<num<<" ";
for(int i = 0; i < n-1; i++)
cout<<"0 ";
cout<<endl;
}
}

I don’t understand why this isn’t getting accepted