Cod sursa(job #2019656)

Utilizator darisavuSavu Daria darisavu Data 8 septembrie 2017 11:34:49
Problema Schi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.89 kb
#include <fstream>
#define ub(x) (x&(-x))
using namespace std;
ifstream f("schi.in");
ofstream g("schi.out");
int n,a[30005],aib[30005],y,b[30005];
void scade(int poz)
{
    for(int i=poz;i<=n;i=i+ub(i))
    {
        aib[i]--;
    }
}
int sum(int poz)
{
    int s=0;
    for(int i=poz;i>0;i=i-ub(i))
    {
        s=s+aib[i];
    }
    return s;
}
int caut(int val)
{
    int st=1,dr=n,mij,mn=n+1;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        if(sum(mij)==val&&mij<mn) {mn=mij;dr=mij-1;}
        else if(sum(mij)>val) dr=mij-1;
        else st=mij+1;
    }
    return mn;
}
int main()
{
    int i;
    f>>n;
    for(i=1;i<=n;i++)
    {
        f>>a[i];
        aib[i]=ub(i);
    }
    for(i=n;i>=1;i--)
    {
        y=caut(a[i]);
        scade(y);
        b[y]=i;
    }
    for(i=1;i<=n;i++)
    {
        g<<b[i]<<'\n';
    }
    return 0;
}