UVA 11371 - Number Theory for Newbies Solution

 Solution in C++:

///**********ALLAH IS ALMIGHTY************///

///AH Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh  

#include <bits/stdc++.h>

using namespace std;

int main()

{

    long long x,y,i,mx,mn,d,a;

    string s,t;

    while(cin>>s)

    {

        sort(s.begin(),s.end());

        t=s;

        if(t[0]=='0')

        {

            int len=t.size();

            for(i=1; i<len; i++)

            {

                if(t[i]!='0')

                {

                    swap(t[0],t[i]);

                    break;

                }

            }

        }

        reverse(s.begin(),s.end());

        x=atoll(s.c_str());

        y=atoll(t.c_str());

        mx=max(x,y);

        mn=min(x,y);

        d=mx-mn;

        a=d/9;

        printf("%lld - %lld = %lld = 9 * %lld\n",mx,mn,d,a);

    }

}


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