#include <stdio.h>
main()
{
float R1,R2,R3,Rsum,I,V;

I=5;

printf("dwse R1:");
 scanf("%f",&R1);

printf("dwse R2:");
 scanf("%f",&R2);

printf("dwse R3:");
 scanf("%f",&R3);
Rsum = ((R1+R2)*R3)/(R1+R2+R3);

V=I*Rsum;
 if(V>3){
 printf("H tasi sta akra einai megaluterh apo 3v");
       }
 else{
 printf("H tasi sta akra den einai megaluterh apo 3v");
     }
}