func_code_string: #include <bits/stdc++.h>   using namespace std;   vector<int> a;   void init(int x) {     vector<int> b;     while (x > 0) {       int tmp = x % 10;       b.push_back(tmp);       x /= 10;     }     for (int i = b.size() - 1; i >= 0; i--) {       a.push_back(b[i]);     }   }   int main() {     for (int i = 0; i <= 1000; ++i) init(i);     int n;     while (~scanf( %d , &n)) cout << a[n - 1] << endl;     return 0;   }   