c++ - UVa_100 3n+1, I got wrong answer -

here code:

#include <iostream> #include <cmath> using namespace std;  long long int problem(long long int); int counter = 0;  int main() {     int i, j;     while(cin >> >> j){          int max = 0;         if(i > j){              int temp = i;             = j;             j = temp;         }         for(long long int count = i; count <= j; count++){              counter = 1;             problem(count);             if(counter > max) max = counter;         }          cout << << " " << j << " " << max << endl;     }     return 0; } long long int problem(long long int n) {     if(n == 1){      }     else     {         if(n % 2 == 1){             counter++;             return problem(3 * n+1);         }else{             counter++;             return problem(n/2);         }     }  } 

i tried every input provided uva , correct output, however, uva still return me "wrong answer".

thanks lot!

your program okay. print numbers appeared in input. :

input : 10 5

correct output : 10 5 20

your output : 5 10 20