#include <iostream>

using namespace std;

int main() {

     string num{"489"};
     //string num{"Four score and seven years ago..."};
     size_t i;

     //size_t length;
/*
     length = num.length();
     cout << " The length of \"" << num << "\" is " << length << endl;

     for(i =0; i < num.size(); ++i) {
        cout << i << " has " << num[i] << endl;
        num[i] += 1;
        cout << i << " and also " << num.at(i) << endl;
     }

     cout << "At poisition -1" << endl;
     cout << num.at(-1) << endl;
     cout << "At poisition size+10" << endl;
     cout << num.at(num.size() + 10000) << endl;
*/

     int value{0};

     for(i = 0; i < num.size() ; ++i) {
         //cout << num[i] << " "  << num[i] - '0' << endl;
         value = value * 10 + (num[i] -'0');
     }

     cout << value << endl;

     return 0;
}