#include<stdio.h>
#include<math.h>
 int main(){
     int a,b,c;
     printf("the value of 3 side of traingle :");
     scanf("%d%d%d",&a,&b,&c);
     if(a=b=c){
         printf("equilateral");
     }
       if (a=b\\b=c\\c=a);{
         printf("isosceles"):
     }
 }