#include <bits/stdc++.h>
using namespace std;
const int maxn = 3e5 + 5;
int arr[maxn];
int main() {
  int n;
  scanf("%d", &n);
  int pos = n;
  cout << 1 << endl;
  for (int i = 1; i <= n; i++) {
    int tmp;
    scanf("%d", &tmp);
    arr[tmp] = 1;
    while (arr[pos]) pos--;
    printf(" %d", i - (n - pos) + 1);
  }
  cout << endl;
  return 0;
}
