Cod sursa(job #1259729)

Utilizator killer301Ioan Andrei Nicolae killer301 Data 10 noiembrie 2014 14:53:13
Problema Order Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.43 kb
#include <cstdio>
#include <algorithm>

using namespace std;

const int nmax=100000;
int arint[4*nmax+1];
int n;

void update(int nod, int st, int dr, int poz, int val)
{
    if(st==dr)arint[nod]=val;
    else
    {
        int mid=(st+dr)/2;
        if(poz<=mid)update(2*nod, st, mid, poz, val);
        else update(2*nod+1, mid+1, dr, poz, val);
        arint[nod]=arint[2*nod]+arint[2*nod+1];
    }
}

int ans;

void querry(int nod, int st, int dr, int x, int y)
{
    if(st>=x && y>=dr)
    {
        ans+=arint[nod];
        return;
    }
    int mid=(st+dr)/2;
    if(x<=mid)querry(2*nod, st, mid, x, y);
    if(y>mid)querry(2*nod+1, mid+1, dr, x, y);
}

int binary(int x, int y, int val)
{
	int st=x, dr=y;
	int last= x;
	while(st<=dr)
	{
		int mid=(st+dr)/2;
		ans=0;
		querry(1, 1, n, x, mid);
		if( ans >= val ) {
			dr= mid-1;
			last= mid;
		}
		if( ans < val ) {
			st= mid+1;
		}
	}
	return last;
}

int main()
{
    freopen("order.in", "r", stdin);
    freopen("order.out", "w", stdout);
    scanf("%d", &n);
    for(int i=1;i<=n;i++)
		update(1, 1, n, i, 1);
	int poz=1;
	for(int i=1;i<=n;i++)
	{
		int lg=i%(n-i+1);
		if( lg == 0 ) lg= n-i+1;
		ans= 0;
		querry(1, 1, n, poz+1, n);
		int limit= ans;
		if(lg<=limit)
			poz=binary(poz+1, n, lg);
		else poz=binary(1, poz, (lg+limit)%(n-i+1) );
		update( 1, 1, n, poz, 0 );
		printf( "%d ", poz );
	}
    return 0;
}