#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int a, b, x, i, j, k, n;
  cin >> a >> b >> x;
  string s;
  n = a + b;
  if (a >= b) {
    s = "0";
    a -= 1;
  } else {
    s = "1";
    b -= 1;
  }
  for (i = 1; i < n; i++) {
    if (s[i - 1] == '0' && x > 1) {
      s += '1';
      b -= 1;
      x -= 1;
    } else if (s[i - 1] == '1' && x > 1) {
      s += '0';
      a -= 1;
      x -= 1;
    } else if (x == 1 && a != 0 && b != 0) {
      if (s[i - 1] == '0' && a != 0) {
        s += '0';
        a -= 1;
      } else if (s[i - 1] == '1' && b != 0) {
        s += '1';
        b -= 1;
      }
    } else if (a == 0) {
      s += '1';
      b -= 1;
    } else if (b == 0) {
      s += '0';
      a -= 1;
    }
  }
  cout << s << endl;
  return 0;
}
