// editor1
#include<stdio.h>
#include<math.h>
    int min_turn(float score)
    {
        if(score<0)
        {
            printf("Invalid Input\n");
            return -1;
        }
        return (int)ceil(score/3.0);
    }
    int main()
    {
        float score;
        printf("enter the player's score:");
        int turns=min_turns(score);
        if(turns!=-1)
        {
            printf("%d\n",score);
        }
        return 0;
    }