#define IN_FILE "input.txt"
#define OUT_FILE "output.txt"

#define MAX_INPUT 128

#define TRUE 1
#define FALSE 0

typedef int BOOL;

BOOL make_input_num(char *inStr, int outNum[2]);

int calc_3n_1(int nInput);

void main()
{
  FILE *inFp;
  FILE *outFp;

  char inStr[MAX_INPUT + 1] = {0};    
  char outStr[MAX_INPUT + 1] = {0};
 
  int resNum[2] = {0};   
  int nCount;
  int nCycleResult;
  int nMaxCycleResult;

  inFp = fopen(IN_FILE, "r");
  outFp = fopen(OUT_FILE, "w");

  while(fgets(inStr, MAX_INPUT, inFp) != NULL)
  {
       memset(resNum, 0, sizeof(resNum));
       if(!make_input_num(inStr, resNum))
       {
           for(nCount = resNum[0], nCycleResult = 0, nMaxCycleResult = 0; nCount <= resNum[1]; nCount++)
           {
               nCycleResult = calc_3n_1(nCount);

               if(nCycleResult > nMaxCycleResult)
               {
                   nMaxCycleResult = nCycleResult;
               }
              
           }
          
           sprintf(outStr, "%d %d %d\n", resNum[0], resNum[1], nMaxCycleResult);
           fputs(outStr, outFp);
           memset(outStr, 0, sizeof(outStr));
       }
       else
       {
           printf("Input a Invalid Number\n");
       }
  }
 
  fclose(inFp);
  fclose(outFp);   
}

BOOL make_input_num(char *inStr, int outNum[2])
{   
  char *outStr[2] = {NULL};
      
  outStr[0] = strtok(inStr, " ");
  outStr[1] = strtok(NULL, " ");
 
  outNum[0] = atoi(outStr[0]);
  outNum[1] = atoi(outStr[1]);
 
  if((isdigit(outNum[0]) == FALSE) && (isdigit(outNum[1]) == FALSE))
  {
       return FALSE;
  }

  return TRUE;
}

int calc_3n_1(int nInput)
{
  int nCycleCount;
  int nTempNum;

  nCycleCount = 1;
  nTempNum = nInput;

  while(nTempNum != 1)
  {
       if(0 == (nTempNum % 2))
       {
           nTempNum /= 2;
       }
       else
       {
           nTempNum = (nTempNum * 3) + 1;
       }
       ++nCycleCount;
  }

  return nCycleCount;
}