Cod sursa(job #1140881)

Utilizator costyrazvyTudor Costin Razvan costyrazvy Data 12 martie 2014 12:33:12
Problema Schi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.89 kb
#include <fstream>
#define ub(x) (x&(-x))
#define NMAX 30001
using namespace std;
int AIB[NMAX],a[NMAX],sol[NMAX],n,i,x;
void add(int poz)
{
    int i;
    for(i=poz; i<=n; i+=ub(i))
         AIB[i]--;
}
int sum(int poz)
{
    int i,s=0;
    for(i=poz; i>0; i-=ub(i))
        s+=AIB[i];
    return s;
}
int binary_search(int x)
{
    int st,dr,mij,s,mn=999999999;
    st=1; dr=n;
    while(st<=dr)
    {
        mij=(st+dr)/2;
        s=sum(mij);
        if(s==x && mij<mn) mn=mij;
        else if(s>=x) dr=mij-1;
        else st=mij+1;
    }
    return mn;
}
int main()
{
    ifstream f("schi.in");
    ofstream g("schi.out");
    f>>n;
    for (i=1;i<=n;i++) f>>a[i];
    for (i=1;i<=n;i++) AIB[i]=ub(i);
    for (i=n;i>=1;i--)
            x=binary_search(a[i]),sol[x]=i,add(x);
    for (i=1;i<=n;i++) g<<sol[i]<<'\n';
    f.close();
    g.close();
    return 0;
}