Submission #966543

#	Time	Username	Problem	Language	Result	Execution time	Memory
966543		yellowtoad	Money (IZhO17_money)	C++17	100 / 100	853 ms	58428 KiB

money

#include <iostream>
#include <set>
#include <vector>
using namespace std;

int n, a[1000010], cnt;
multiset<int> bst;
multiset<int>::iterator iter;
vector<int> tmp;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i];
	tmp.push_back(0);
	for (int i = 1; i <= n; i++) {
		if (a[i-1] > a[i]) {
			cnt++;
			for (int j = 0; j < tmp.size(); j++) bst.insert(tmp[j]);
			tmp.clear();
		} else {
			iter = bst.upper_bound(tmp[0]);
			if ((iter != bst.end()) && (*iter < a[i])) {
				cnt++;
				for (int j = 0; j < tmp.size(); j++) bst.insert(tmp[j]);
				tmp.clear();
			}
		}
		tmp.push_back(a[i]);
	}
	cout << cnt+1 << endl;
}

Compilation message (stderr)

money.cpp: In function 'int main()':
money.cpp:20:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |    for (int j = 0; j < tmp.size(); j++) bst.insert(tmp[j]);
      |                    ~~^~~~~~~~~~~~
money.cpp:26:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for (int j = 0; j < tmp.size(); j++) bst.insert(tmp[j]);
      |                     ~~^~~~~~~~~~~~

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