Submission #949484

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
949484	2024-03-19 09:31:46	MilosMilutinovic	빌딩 장식 3 (JOI15_building3)	C++14	100 / 100	70 ms	21184 KiB

building3

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#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  vector<int> b(n - 1);
  for (int i = 0; i < n - 1; i++) {
    cin >> b[i];
  }
  vector<int> mx(n - 1);
  vector<bool> good(n - 1);
  for (int i = 0; i < n - 1; i++) {
    mx[i] = (i == 0 ? b[i] : max(mx[i - 1], b[i]));
    if (i == 0) {
      good[i] = (b[i] == 1); 
    } else {
      good[i] = (good[i - 1] & (b[i] <= mx[i - 1] + 1));
    }
  }
  long long ans = 0;
  {
    vector<int> seq;
    seq.push_back(1);
    for (int i = 0; i < n - 1; i++) {
      seq.push_back(b[i]);
    }
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 60 / 60