IPC Three Way Communication

Source Code:

 #include <stdio.h>
#include<math.h>
int main(void) {
// your code goes here
int t;
scanf("%d",&t);
while(t-->0){
    int n,a1,a2,b1,b2,c1,c2;
    float n1,n2,n3;
    scanf("%d",&n);
    scanf("%d%d",&a1,&a2);
    scanf("%d%d",&b1,&b2);
    scanf("%d%d",&c1,&c2);
    n1=(double)(sqrt((a1-b1)*(a1-b1)+(a2-b2)*(a2-b2)));
    n2=(double)(sqrt((a1-c1)*(a1-c1)+(a2-c2)*(a2-c2)));
    n3=(double)(sqrt((b1-c1)*(b1-c1)+(b2-c2)*(b2-c2)));
    if(n2<=n && n3<=n || n1<=n && n3<=n)
        printf("yes\n");
     
    else if(n1<=n && n2<=n)
       printf("yes\n");
    else
       printf("no\n");
}
return 0;
}