Submission #1086157

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086157		duytuandao21	Po (COCI21_po)	C++17	70 / 70	7 ms	860 KiB

Main

#include<bits/stdc++.h>
using namespace std;

const int N = 2e5 + 7;
const int inf = 1e9 + 7;
const long long infll = 1e18 + 7;

int n;
int a[N], posMin[N], prePos[N];
pair<int, int> b[N];
int main() 
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) cin >> a[i];
    stack <int> st;
    int res = 0;
    for (int i = 1; i <= n; i++) {
        while (st.size() > 0 && a[i] < st.top()) st.pop();
        if (st.size() == 0 || st.top() != a[i]) 
        {
            if (a[i])
            {
                res++;
                st.push(a[i]);
            }
        }
    }
    cout << res;
    return 0;
}

• Subtask 1: 70 / 70