#include <iostream>
using namespace std;
int main()
{
    int n, chuc, dv;
    cout << "nhap so n:";
    cin>>n;
    if (n>0)
    {
if (n<10)
{
switch (n)
{
    case 1: {cout<<"mot";
        break;
    }
    case 2: {cout<<"hai";
        break;
    }
    case 3: {cout<<"ba";
        break;
    }
    case 4: {cout<<"bon";
        break;
    }
    case 5: {cout<<"nam";
        break;
    }
    case 6: {cout<<"sau";
        break;
    }
    case 7: {cout<<"bay";
        break;
    }

    case 9: {cout<<"tam";
        break;
    }

}
}
else (n>10 && n<100);
{
    chuc= n/10;
    dv= n%10;
    switch (chuc)
    {
        case 1: {cout<<"muoi";
            break;
        }
        case 2: {cout<<"hai muoi";
            break;
        }
        case 3: {cout<<"ba muoi";
            break;
        }
        case 4: {cout<<"bon muoi";
            break;
        }
        case 5: {cout<<"nam muoi";
            break;
        }
        case 6: {cout<<"sau muoi";
            break;
        }
        case 7: {cout<<"bay muoi";
            break;
        }
        case 8: {cout<<"tam muoi";
            break;
        }
        case 9: {cout<<"chin muoi";
            break;
        }
    }
    switch (dv)
    {
        case 1: {cout<<"mot";
            break;
        }
        case 2: {cout<<"hai";
            break;
        }
        case 3: {cout<<"ba";
            break;
        }
        case 4: {cout<<"bon";
            break;
        }
        case 5: {cout<<"lam";
            break;
        }
        case 6: {cout<<"sau";
            break;
        }
        case 7: {cout<<"bay";
            break;
        }
        case 8: {cout<<"tam";
            break;
        }
        case 9: {cout<<"chin";
            break;
        }
    }
}
}
else cout<<"khong hop le";
}