/******************************************************************************
 
Welcome to GDB Online.
GDB online is an online compiler and debugger tool for C/C++.
Code, Compile, Run and Debug online from anywhere in world.
 
*******************************************************************************/
#include <iostream>
using namespace std;
 
int DigitsExtract(int Dg[],int number)
{
    int s=0;
    for(int i=1;number!=0;i++)
    {
        Dg[i]=(number/(10*i))%10;
        s+=i;
    }
    return s;
}
int main()
{
    int n;
    int A[n];
    cin>>n;
    DigitsExtract(A,n);
    return 0;
}
 
 
 

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45