学步园

http://wikioi.com/problem/1282/

// File Name: wiki1282.cpp
// Author: bo_jwolf
// Created Time: 2013年08月17日 星期六 10时24分52秒

#include<vector>
#include<list>
#include<map>
#include<set>
#include<deque>
#include<stack>
#include<bitset>
#include<algorithm>
#include<functional>
#include<numeric>
#include<utility>
#include<sstream>
#include<iostream>
#include<iomanip>
#include<cstdio>
#include<cmath>
#include<cstdlib>
#include<cstring>
#include<ctime>

using namespace std;
#define maxn 30005
#define lson l , m , rt << 1 
#define rson m + 1 , r , rt << 1 | 1 
int sum[ maxn << 2 ] ;
void PushUp( int rt )
{
	sum[ rt ] = sum[ rt << 1 ] + sum[ rt << 1 | 1 ] ;
}

void build( int l , int r , int rt )
{
	sum[ rt ] = r - l + 1 ;
	if( l == r )
		return ;
	int m = ( l + r ) >>  1 ;
	build( lson ) ;
	build( rson ) ;
}

int query( int p , int l , int r , int rt )
{
	if( l == r )
	{
		sum[ rt ] = 0 ;
		return l ;
	}
	int m = ( l + r ) >> 1 ;
	int ans  ;
	if( sum[ rt << 1 ] >= p )
		ans =  query( p , lson ) ;
	else
		ans = query( ( p - sum[ rt << 1 ] ) , rson ) ;
	PushUp( rt ) ;
	return ans ;
}

int main()
{
	int n , k ;
	cin >> n >> k ;
	build( 1 , n , 1 ) ;
	int temp = k ;
	for( int i = 1 ; i <= n ; ++i )
	{
		if( i != n )
			cout << query( temp , 1 , n , 1 ) << " ";
		else
			cout << query( temp , 1 , n , 1 ) ;
		if( i != n )
			temp = ( temp + k - 1 ) % ( n - i ) ;
		if( temp == 0 )
			temp = n - i ;
	}
return 0;
}