oj.uz

답안 #386430

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
386430 2021-04-06T14:16:19 Z phathnv Po (COCI21_po) C++11
70 / 70
 13 ms 876 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

const int N = 1e5 + 7;

int n, a[N];

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin >> n;
    for(int i = 1; i <= n; i++)
        cin >> a[i];

    int res = 0;
    stack<int> st;
    st.push(0);
    for(int i = 1; i <= n; i++){
        while (a[st.top()] > a[i]){
            st.pop();
            res++;
        }
        if (a[st.top()] < a[i])
            st.push(i);
    }
    res += st.size() - 1;
    cout << res;

    return 0;
}

Subtask #1
70.0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 6 ms 492 KB Output is correct
5 Correct 7 ms 620 KB Output is correct
6 Correct 13 ms 876 KB Output is correct
7 Correct 12 ms 748 KB Output is correct