제출 #366350

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
366350		CodePlatina	Po (COCI21_po)	C++14	70 / 70	12 ms	1152 KiB

Main

#include <iostream>
#include <vector>
#include <algorithm>
#include <utility>
#define pii pair<int, int>
#define piii pair<int, pii>
#define pll pair<long long, long long>
#define plll pair<long long, pll>
#define ff first
#define ss second
#define ee ss.ff
#define rr ss.ss
#define DEBUG

using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n; cin >> n;
    int arr[n]; for(auto &i : arr) cin >> i;
    vector<int> Q{0};
    int ans = 0;
    for(int i = 0; i < n; ++i)
    {
        while(Q.size() && Q.back() > arr[i]) Q.pop_back(), ++ans;
        if(Q.empty() || Q.back() != arr[i]) Q.push_back(arr[i]);
    }
    cout << ans + (int)Q.size() - 1;
}

• Subtask 1: 70 / 70