Submission #1266367

#	Time	Username	Problem	Language	Result	Execution time	Memory
1266367		canhnam357	Po (COCI21_po)	C++20	70 / 70	7 ms	1876 KiB

Main

// source problem : 
#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
#define int long long
#define lb lower_bound
#define ub upper_bound
#define MASK(i) (1LL << (i))
const int inf = 1e18;
void ckmax(int& f, int s)
{
    f = (f > s ? f : s);
}
void ckmin(int& f, int s)
{
    f = (f < s ? f : s);
}
int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n);
    for (int &i : a) cin >> i;
    vector<int> b;
    int ans = 0;
    for (int i : a) {
        if (i == 0) {
            b = {};
            continue;
        }
        while (!b.empty() && b.back() > i) b.pop_back();
        if (b.empty() || b.back() != i) ans++, b.push_back(i);
    }
    cout << ans;
    return 0;
}

• Subtask 1: 70 / 70