제출 #31642

#제출 시각아이디문제언어결과실행 시간메모리
31642bolobalabrBaloni (COCI15_baloni)C++14
100 / 100
93 ms9988 KiB
#include <bits/stdc++.h>

using namespace std;

int n, dd[1000006], a[1000006], res(0);

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n;
    fill(dd + 1, dd + 1000005, 0);
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < n; i++)
    {
        if (dd[a[i] + 1] > 0) dd[a[i] + 1]--;
        else res++;
        dd[a[i]]++;
    }
    cout << res;
}
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