Submission #541119

#	Time	Username	Problem	Language	Result	Execution time	Memory
541119		Smailik	Money (IZhO17_money)	C++14	100 / 100	1004 ms	55220 KiB

money

#include <bits/stdc++.h>
 
#define ll long long int
#define pb push_back
#define ui unsigned int
#define ld long double
#define buster ios_base::sync_with_stdio(NULL);cin.tie(0);cout.tie(0);
 
using namespace std;
 
int main()
{
 
    buster;
 
    ll tt = 1;
 
    //cin >> tt;
 
    while(tt--)
    {
        ll n;
 
        cin >> n;
 
        ll a[n + 1];
 
        for(ll i = 1; i <= n; i++)
        {
            cin >> a[ i ];
        }
        set <ll> st;
        st.insert(100000000);
        ll cnt = 100000000;
        ll ans = 1;
        st.insert(a[ 1 ]);
        for(ll i = 2; i <= n; i++)
        {
            if(a[ i ] == a[i - 1])
            {
                continue;
            }
            auto it = st.lower_bound(a[ i ]);
            if(a[ i ] < a[i - 1] || cnt != *it)
            {
                ans++;
                cnt = *st.upper_bound(a[ i ]);
            }
            st.insert(a[ i ]);
        }
        cout << ans;
    }   
}

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