#include<iostream>

using namespace std;

int check(string str)

{

int n = str.length();

// Compute sum of even and odd digit

int oddDigSum = 0, evenDigSum = 0;

for (int i=0; i<n; i++)

{

// When i is even, position of digit is odd

if (i%2 == 0)

oddDigSum += (str[i]-'0');

else

evenDigSum += (str[i]-'0');

}

// Check its difference is divisble by 11 or not

return ((oddDigSum - evenDigSum) % 11 == 0);

}

int main()

{

string str;

cout << "Enter number: " ;

cin >> str ;

check(str)? cout << "Number divisible by 11" : cout << "Number not divisible by 11";

return 0;

}