public static void Main()
int input1=Convert.ToInt32(Console.ReadLine());
int input2=Convert.ToInt32(Console.ReadLine());
int input3=Convert.ToInt32(Console.ReadLine());
string str1=input1.ToString();
string str2=input2.ToString();
string str3=input3.ToString();
char[] ch1=str1.ToCharArray();
char[] ch2=str2.ToCharArray();
char[] ch3=str3.ToCharArray();
String L1=Convert.ToString(ch1[ch1.Length-1]);
String L2=Convert.ToString(ch2[ch2.Length-1]);
String L3=Convert.ToString(ch3[ch3.Length-1]);
String l1=Convert.ToString(ch1[ch1.Length-2]);
String l2=Convert.ToString(ch2[ch2.Length-2]);
String l3=Convert.ToString(ch3[ch3.Length-2]);
int key=Convert.ToInt32(L1)+Convert.ToInt32(L2)+Convert.ToInt32(L3)+Convert.ToInt32(l1)+Convert.ToInt32(l2)+Convert.ToInt32(l3);