제출 #231183

#제출 시각아이디문제언어결과실행 시간메모리
231183palpatinezwBaloni (COCI15_baloni)C++14
40 / 100
13 ms1152 KiB
#include <bits/stdc++.h>
using namespace std;
#define int long long

int N, h[100005];
multiset<int> s;

int32_t main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cin >> N;
	for (int i = 0; i < N; i++) {
		cin >> h[i];
	}
	int c = 0;
	for (int i = 0; i < N; i++) {
		if (s.find(h[i] + 1) == s.end()) c++;
		else s.erase(s.find(h[i] + 1));
		s.insert(h[i]);
	}
	cout << c;
}
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