Cod sursa(job #3362579)

Utilizator bogdan_barnaBogdan Barna bogdan_barna Data 10 august 2026 15:39:51
Problema Order Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.8 kb
#include <bits/stdc++.h>

using namespace std;

const int N=30001;
int fen[N];

void update(int i, long long add)
{
    while(i<N)
    {
        fen[i]+=add;
        i+=(i&(-i));
    }
}

int sum(int i)
{
    int s=0;
    while(i)
    {
        s+=fen[i];
        i-=(i&(-i));
    }
    return s;
}

int find_kth(int n)
{
    int st=1,dr=N;
    while(st<=dr)
    {
        int mid=(st+dr)/2;
        if(sum(mid)>=n)
        {
            dr=mid;
        }
        else st=mid+1;
    }
    return st;
}

int main () 
{
    int n;
    cin>>n;
    for (int i=1; i<=n; i++)
    {
        update(i,1);
    }
    int x=1;
    for(int i=1; i<=n; i++)
    {
        int copil=n-i+1;
        x=(x+i-1)%copil+1;
        int cop=find_kth(x);
        cout<<cop;
        update(cop,-1);
        if(x>copil-1)
            x=1;
    }
}