Submission #75181

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
75181	2018-09-08T16:00:51 Z	vex	medians (balkan11_medians)	C++14	Compilation error	0 ms	0 KB

medians

#include <bits/stdc++.h>
#define maxn 100005
using namespace std;

int n;
bool bio[maxn];
int sol[2*maxn];
int tree[8*maxn];
int najm,najv;

void update(int v,int l,int r,int ind)
{
    if(l>r || l>ind || ind>r)return;
    tree[v]++;

    if(l==r)return;
    int mid=(l+r)/2;
    update(2*v,l,mid,ind);
    update(2*v+1,mid+1,r,ind);
}
int query(int v,int l,int r,int lu,int ru)
{
    if(l>r || l>ru || lu>r)return 0;
    if(lu<=l && r<=ru)return tree[v];

    int mid=(l+r)/2;
    return query(2*v,l,mid,lu,ru)+query(2*v+1,mid+1,r,lu,ru);
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    cin>>n;
    najm=1;
    najv=2*n-1;
    for(int i=1;i<=2*n-1;i++)bio[i]=false;

    cin>>sol[0];
    bio[sol[0]]=true;
    for(int i=1;i<n;i++)
    {
        
        cin>>x;

        int uk=0;if(i!=0)uk=2*i-1;
        int man=query(1,1,2*n-1,1,x-1);
        int vec=uk-man;

        if(!bio[x])
        {
            sol[uk]=x;
            uk++;
            bio[x]=true;
            update(1,1,2*n-1,x);
            if(vec>man)
            {
                while(bio[najm])najm++;
                sol[uk]=najm;
                update(1,1,2*n-1,najm);
                bio[najm]=true;
                najm++;
                uk++;
            }
            else{
                while(bio[najv])najv--;
                sol[uk]=najv;
                update(1,1,2*n-1,najv);
                bio[najv]=true;
                najv--;
                uk++;
            }
        }
        else{
            for(int j=0;j<2;j++)
            {
                if(vec>man)
                {
                    while(bio[najm])najm++;
                    sol[uk]=najm;
                    update(1,1,2*n-1,najm);
                    bio[najm]=true;
                    najm++;
                    man++;
                    uk++;
                }
                else{
                    while(bio[najv])najv--;
                    sol[uk]=najv;
                    update(1,1,2*n-1,najv);
                    bio[najv]=true;
                    najv--;
                    vec++;
                    uk++;
                }
            }
        }
    }

    for(int i=0;i<2*n-1;i++)cout<<sol[i]<<" ";
    return 0;
}

Compilation message

medians.cpp: In function 'int main()':
medians.cpp:46:14: error: 'x' was not declared in this scope
         cin>>x;
              ^