1 #include <iostream>
2 #include <cstdio>
3 using namespace std;
4
5 void print(int i, int j)
6 {
7 if(i > j) { int temp = i; i = j; j = temp; }
8
9 int max = 0;
10 for(int k = i; k <= j; k++)
11 {
12 int n = k, sum = 1;
13 while(n != 1)
14 {
15 if(n % 2) n = 3 * n + 1, sum ++;
16 else n = n / 2, sum ++;
17 }
18 if(max < sum) max = sum;
19 }
20 printf("%d\n", max);
21 }
22
23 int main()
24 {
25 int i, j;
26 while(scanf("%d%d", &i, &j) != EOF)
27 {
28 printf("%d %d ", i, j);
29 print(i, j);
30 }
31 return 0;
32 }
