#include <bits/stdc++.h>
using namespace std;
const int MAXSZ = 100000;
int req[MAXSZ];
int prob[MAXSZ];
int main(int argc, const char* argv[]) {
  int n, m, k;
  scanf("%d%d", &n, &m);
  int count = 1;
  for (int i = 0; i < m; i++) {
    scanf("%d", &k);
    prob[k]++;
    req[prob[k]]++;
    if (req[count] == n) {
      cout << 1;
      count++;
    } else {
      cout << 0;
    }
  }
}
