#iclude<stdio.h>
#include<math.h>
 int min_turn(fioat score)
 {
     if(score<0)
     {
         printf("Invalid Input\n");
         return 0;
     }
     return (int)ceil(sore/33.0);
 }
 int nain()
 {
     float score;
     scanf("%f",&;score);
     int result=min_turn(score);
     if(result!=-1)
     {
         printf("%d",result);
     }
     return 0;
 }