#include <stdio.h>

int myMin(int a, int b) {
   if (a < b) { return a;}
   else {return b;}
   
 }


int main() {

  int x,y,z,w;
  int sm;

  scanf("%d%d%d%d", &x,&y,&z,&w);

  sm = myMin(x,y);
  sm = myMin(sm, z);
  sm = myMin(sm, w);

   printf("Smallest number: %d\n", sm); 
return 0;


}