제출 #947293

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
947293		Zena_Hossam	Vudu (COCI15_vudu)	C++14	0 / 140	415 ms	65536 KiB

vudu

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ll long long
using namespace std;
namespace __gnu_pbds
{
typedef tree<ll,
        null_type,
        less_equal<ll>,
        rb_tree_tag,
        tree_order_statistics_node_update> ordered_set;
}
using namespace __gnu_pbds;
#define fi ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//#define ll double

//#define ll1 int
#define F first
#define S second
#define sz size()
#define all(s) s.begin(),s.end()
#define all1(s) s.rbegin(),s.rend()
int main()
{
    //freopen("stdin.in","r",stdin);freopen("stdout.out","w",stdout);
    ll T=1;
    fi
    //cin>>T;ll oo=0;
    while(T--)
    {
        ll n;
        cin>>n;
        ll arr[n];
        for(ll i=0; i<n; i++)
        {
            cin>>arr[i];
        }
        ll x;
        cin>>x;
        ll a[n]= {};
        ordered_set s,v;
        ll c=0;
        for(ll i=0; i<n; i++)
        {
            a[i]+=(arr[i]-x);
            if(i)a[i]+=a[i-1];
           // cout<<c<<" ";

            ll k=a[i];
            if(k>=0&&s.size())
            {
                c+=(i+1-(s.size()-s.order_of_key(k+1)));
            }
            if(k<0&&v.size())
            {
                c+=(v.order_of_key(k+1));
            }if(a[i]>=0)
            {
                s.insert(a[i]);
            }
            else v.insert(a[i]);
           // cout<<c<<"\n";
        }
        cout<<c;
    }
}

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