#include <iostream>

using namespace std;

int main()
{
    string str = "@#dawda AB12 z  31%%5 Z";
    string fStr = "";
    for(int i = 0; i < str.length(); i++){
            if( ( int(str[i]) >=65 && int(str[i]) <= 90 ) ||
                ( int(str[i]) >=97 && int(str[i]) <= 122 )||
                ( int(str[i]) >=48 && int(str[i]) <= 57 )){
                fStr = fStr + str[i];
            }
        cout << str[i] << endl;
        cout << int(str[i]) <<endl;

    }
    cout << fStr;
}