Cod sursa(job #2013027)

Utilizator stefdascalescuStefan Dascalescu stefdascalescu Data 20 august 2017 10:16:29
Problema Schi Scor 85
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.95 kb
#include<bits/stdc++.h>
using namespace std;
ifstream f("schi.in");
ofstream g("schi.out");
int n,m,nr,AIB[50002];
int v[50002];
int op,poz,val;
int fr[50002];
void Add(int x)
{
    int i;
    for (i = x; i <= n; i +=( i&(-i) ))
        AIB[i]++;
}
int Compute(int x)
{
    int i, ret = 0;
    for (i = x; i > 0; i -= ( i&(-i) ))
        ret += AIB[i];
    return ret;
}
int main()
{
    f>>n;
    for(int i=1;i<=n;++i)
        f>>v[i];
    for(int i=n;i>=1;--i)
    {
        nr=v[i];
        int b=1;
        int e=n;
        while(b<=e)
        {
            int m=(b+e)>>1;
            if(m-Compute(m)==nr && fr[m]==0){
                Add(m);
                fr[m]=i;
                break;
            }
            else
                if(m-Compute(m)>=nr)
                    e=m-1;
                else
                    b=m+1;

        }
    }
    for(int i=1;i<=n;++i)
        g<<fr[i]<<'\n';
    return 0;
}