Submission #359052

#	Time	Username	Problem	Language	Result	Execution time	Memory
359052		Ahmad_Hasan	Money (IZhO17_money)	C++17	100 / 100	1447 ms	58220 KiB

money

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

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);      cout.tie(0);
    int n;
    cin>>n;
    vector<int>v(n);

    for(int i=0;i<n;i++)
        cin>>v[i];
    int ans=0;
    set<int>ms;
    int f=0;
    int l=0;
    for(int i=0;i<n;i++){
        set<int>::iterator it1=ms.lower_bound(v[i]);
        set<int>::iterator it2=ms.upper_bound(v[i]);

        if((i+1<n)&&(v[i+1]<v[i]||(it2!=ms.end()&&*it2<v[i+1])||(it1!=ms.end()&&*it1>v[l]&&*it1<v[i+1]))){
            ans++;
            for(int j=l;j<=i;j++)
                ms.insert(v[j]);
            l=i+1;
        }

        if(i==n-1)
            ans++;
    }

    cout<<ans<<'\n';



    return 0;
}
/**
7
2 4 6 1 3 5 7
6
3 6 4 5 1 2
*/

Compilation message (stderr)

money.cpp: In function 'int main()':
money.cpp:15:9: warning: unused variable 'f' [-Wunused-variable]
   15 |     int f=0;
      |         ^

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