#include <bits/stdc++.h>
using namespace std;
const long long P = 1000000007;
const long long INF = 1LL << 60;
int gcd(int a, int b) { return b != 0 ? gcd(b, a % b) : a; }
int lcm(int a, int b) { return a / gcd(a, b) * b; }
int main() {
  cout << fixed << setprecision(10);
  int N, K, S;
  cin >> N >> K >> S;
  if (S >= 10000000) {
    for (int i = (0); i < (K); ++i) {
      cout << S;
    }
    for (int i = (0); i < (N - K); ++i) {
      cout << 1;
    }
    cout << endl;
  } else {
    for (int i = (0); i < (K); ++i) {
      cout << S;
    }
    for (int i = (0); i < (N - K); ++i) {
      cout << 10000000;
    }
    cout << endl;
  }
  return 0;
}
