#include <bits/stdc++.h>
using namespace std;
int dp[1000000], arr[1000000];
int main() {
  int fi = 1, se = 1;
  int n;
  cin >> n;
  int last = 20;
  for (int i = 1; i <= n; i++) {
    int x;
    cin >> x;
    arr[i] = x;
    if (i == 1) {
      cout << 20 << '\n';
      dp[i] = 20;
      continue;
    }
    while (arr[fi] + 90 <= arr[i]) fi++;
    while (arr[se] + 1440 <= arr[i]) se++;
    dp[i] = 20 + dp[i - 1];
    dp[i] = min(dp[i], dp[fi - 1] + 50);
    dp[i] = min(dp[i], dp[se - 1] + 120);
    cout << dp[i] - last << '\n';
    last = dp[i];
  }
  return 0;
}
