Submission #501935

#	Time	Username	Problem	Language	Result	Execution time	Memory
501935		SirCovidThe19th	Money (IZhO17_money)	C++17	100 / 100	964 ms	51272 KiB

money

#include <bits/stdc++.h>
using namespace std; 
 
int n, ans, A[1000005]; set<int> S;
 
int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n; 
    for (int i = 0; i < n; i++) cin >> A[i];

    S.insert(1e9);    
    for (int i = 0; i < n; i++){
        ans++;
        auto mx = *S.upper_bound(A[i]); //vals must be in [A[l], mx]

        S.insert(A[i]);
        while (i < n - 1 and A[i + 1] >= A[i] and A[i + 1] <= mx) S.insert(A[++i]);
    }
    cout<<ans<<"\n";
}

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55