suma_perm_circ

#include <bits/stdc++.h>

using namespace std;
string nr, S;
int n, sm;
string multiply(string num1, string num2)
{
    int n1 = num1.size();
    int n2 = num2.size();
    if (n1 == 0 || n2 == 0)
    return "0";
    vector<int> result(n1 + n2, 0);
    int i_n1 = 0;
    int i_n2 = 0;
    for (int i=n1-1; i>=0; i--)
    {
        int carry = 0;
        int n1 = num1[i] - '0';
        i_n2 = 0;
        for (int j=n2-1; j>=0; j--)
        {
            int n2 = num2[j] - '0';
            int sum = n1*n2 + result[i_n1 + i_n2] + carry;
            carry = sum/10;
            result[i_n1 + i_n2] = sum % 10;
            i_n2++;
        }
        if (carry > 0)
            result[i_n1 + i_n2] += carry;
        i_n1++;
    }
    int i = result.size() - 1;
    while (i>=0 && result[i] == 0)
    i--;
    if (i == -1)
    return "0";
    string s = "";
    while (i >= 0)
        s += std::to_string(result[i--]);
    return s;
}

int main()
{
    getline(cin,nr);
    n=nr.size();
    string str(n,'1');
    for(char ch: nr)
        sm+=ch-'0';
    string stri = to_string(sm);
    S=multiply(stri,str);
    cout<<S;
    return 0;
}