UVA 11371

#include <iostream>#include <string>#include <algorithm>#include <sstream>#include <iomanip>using namespace std;static const char c_zero = '0'; int main(int argc, char** argv){        string str_min, str_max;        double d_min, d_max;        while(cin>>str_min){        while(!str_min.empty() && *(str_min.begin()) == c_zero)                str_min.erase(str_min.begin());                sort(str_min.begin(), str_min.end());                str_max = str_min;                reverse(str_max.begin(), str_max.end());                if(*(str_min.begin()) == c_zero){                        int i = str_min.find_first_not_of("0", 0);                        iter_swap(str_min.begin(), str_min.begin() + i);                }                istringstream(str_max)>>d_max;                istringstream(str_min)>>d_min;                cout<<fixed<<setprecision(0)<<d_max<<" - "<<d_min<<" = "<<d_max - d_min<<" = 9 * "<<(d_max - d_min)/9<<endl;        }        return 0;}