#include<stdio.h>
int main()
{
    int num,a,b;
    printf("ENTER THE NUM : ");
    scanf("%d",&num);

    printf("ENTER TWO NUMBER: ");
    scanf("%d%d",&a,&b);

    switch(num)
    {

    case 1 :
        printf("SUM IS: %d\n",a+b);
        printf("Hello");

     break;
     case 2 :
         printf("SUB IS %d\n",a-b);
         printf("UIU");

     break;

      case 3 :printf("CSE");

    break;
    default : printf("EROR");
    }
    return 0;






}