Submission #144056

#	Time	Username	Problem	Language	Result	Execution time	Memory
144056		The_Wolfpack	Money (IZhO17_money)	C++14	100 / 100	254 ms	15096 KiB

money

#include <bits/stdc++.h>
using namespace std;
const int NMAX=1e6+8;
 
int fen[NMAX];
void add(int x)
{
    for(;x<NMAX;x+=(x&-x)) fen[x]++;
}
int gget(int x)
{
    int res=0;
    for(;x>0;x-=(x&-x)) res+=fen[x];
    return res;
}
int n,a[NMAX];
int main()
{
    ios_base::sync_with_stdio(false);
    cin>>n;
    int res=1;
    vector<int>tmp;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        if(!tmp.size())
        {
            tmp.push_back(a[i]);
            continue;
        }
        else
        {
            if(a[i]<tmp.back() || gget(a[i]-1)>gget(tmp[0])) 
            {
                res++;
                for(int x:tmp) add(x);
                tmp.clear();
            }
            tmp.push_back(a[i]);
        }
    }
    cout<<res<<endl;
    return 0;
}

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