Submission #217684

#	Time	Username	Problem	Language	Result	Execution time	Memory
217684		KoalaMuch	medians (balkan11_medians)	C++14	100 / 100	115 ms	13560 KiB

medians

#include<bits/stdc++.h>
using namespace std;
const int N = 2e5+5;
int f[N];
set< int > s;
int ans[N];
int a[N];
int cur = 1;

void upd(int i)
{
    while(i<N)  ++f[i],i+=i&-i;
}
int get(int i,int ret = 0)
{
    while(i)    ret+=f[i],i-=i&-i;
    return ret;
}
void add(int v)
{
    ans[cur] = v;
    s.erase(s.find(v));
    upd(v+1);
    cur++;
}
int main()
{
    int n;
    scanf("%d",&n);
    for(int i=1;i<=n;i++)   scanf("%d",&a[i]);
    for(int i=1;i<2*n;i++)  s.insert(i);
    for(int i=1;i<=n;i++)
    {
        if(s.count(a[i]))    add(a[i]);
        while(get(a[i])!=i-1)   add(*s.begin());
        while(cur-get(a[i]+1)!=i)    add(*(--s.end()));
    }
    for(int i=1;i<2*n;i++)  printf("%d ",ans[i]);
    return 0;
}
/*
13 10 3 8 8 10 10 11 11 10
13 1 10 3 2 8 20 4 19 5 18 6
*/

Compilation message (stderr)

medians.cpp: In function 'int main()':
medians.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
medians.cpp:30:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1;i<=n;i++)   scanf("%d",&a[i]);
                             ~~~~~^~~~~~~~~~~~

• Subtask 1: 65 / 65
• Subtask 2: 35 / 35