#include <bits/stdc++.h>
int ary[111];
int main(void) {
  int a, b, x;
  scanf("%d %d %d", &a, &b, &x);
  int ch = 0;
  if (a < b) ch = 1;
  int i;
  for (i = 0; i <= x; ++i) {
    if (!ch)
      a -= 1;
    else
      b -= 1;
    ary[i] = ch;
    ch = !ch;
  }
  for (i = 0; i <= x - 2; ++i) printf("%d", ary[i]);
  for (i = x - 1; i <= x; ++i) {
    printf("%d", ary[i]);
    if (!ary[i])
      while (a--) printf("0");
    else
      while (b--) printf("1");
  }
}
