#include<stdio.h>


int summa(int a, int b);

///////////////////////////////////////////////
int main()
{
   int a, b, c;

   scanf("%d%d%d", &a, &b, &c);

   switch(c)
   {

        case 1: c = summa(a, b);
                printf("%d + %d = %d\n", a, b, a+b, c);
                break;

        case 2: c=a-b;
                printf("%d - %d = %d\n", a, b, c);
                break;

        case 3: c=a*b;
                printf("%d * %d = %d\n", a, b, c);
                break;
   }

}

/////////////////////////////////////////////
int summa(int a, int b)
{

return a + b;
}


  // printf("%d\n",a);
 //  printf("%d\n",b);


/*   #include<stdio.h>

/////////////////////////////////
struct   Big
{
    int length;
    int  width;
};


////////////////////////////////////////////
int main()
{
    Big a, b;

    a.length = 12;

    printf("        a.length = %d\n", a.length);
    printf("address a.length = %d\n", &a.length);
    printf("address a. width = %d\n", &a.width);
}*/





/*


#include<stdio.h>

/////////////////////////////////
struct   Big
{
    int   length;
    int    width;
    double   max;
    float    min;
};

void foo(Big *p );
void f_2(Big *pb);

////////////////////////////////////////////////
 int main()
{
     Big b;

     printf(" adress lenght = %d\n", &b.length);
     printf(" adress width  = %d\n", &b. width);
     printf(" adress max    = %d\n", &b.   max);
     printf(" adress min    = %d\n", &b.   min);

     foo(&b);
     f_2(&b);
}



////////////////////////////////////////////////
void f_2(Big *pb)
{

     printf(" adress lenght = %d\n", &pb->length);
     printf(" adress width  = %d\n", &pb-> width);
     printf(" adress max    = %d\n", &pb->   max);
     printf(" adress min    = %d\n", &pb->   min);
}



////////////////////////////////////////////////
void foo(Big *pb)
{

     char *p = (char*)pb;

     printf(" p     = %d\n", p);         p  = p + 4;
     printf(" p + 4 = %d\n", p);         p  = p + 4;
     printf(" p + 4 = %d\n", p);         p +=     8;
     printf(" p + 8 = %d\n", p);
}

*/





/*


#include<stdio.h>

/////////////////////////////////
struct   Big
{
    int   length;
    int    width;
    double   max;
    float    min;
};

////////////////////////////////////////////////
 int main()
{
     Big b;

     printf(" adress lenght = %d\n", &b.length);
     printf(" adress width  = %d\n", &b. width);
     printf(" adress max    = %d\n", &b.   max);
     printf(" adress min    = %d\n", &b.   min);
}


*/