Submission #641321

#	Time	Username	Problem	Language	Result	Execution time	Memory
641321		tvladm2009	Money (IZhO17_money)	C++14	100 / 100	1014 ms	58052 KiB

money

#include <bits/stdc++.h>

using ll = long long;

const int MAX_N = 1e6;
const ll INF = (1LL << 60);

int a[1 + MAX_N];
std::set<ll> s;

int main() {
  std::ios_base::sync_with_stdio(0);
  std::cin.tie(0);
  int n;
  std::cin >> n;
  for (int i = 1; i <= n; i++) {
    std::cin >> a[i];
  }
  ll answer = 0, next = INF;
  s.insert(INF);
  for (int i = 1; i <= n; i++) {
    if (i > 1 && a[i] == a[i - 1]) {
      continue;
    }
    if (i == 1 || a[i - 1] > a[i] || (*s.lower_bound(a[i])) != next) {
      answer++;
      next = *s.upper_bound(a[i]);
    }
    s.insert(a[i]);
  }
  std::cout << answer;
  return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55