Uva 10935 Throwing cards away I

Throwing cards away I

Time Limit: 3000MS

Memory Limit: Unknown

64bit IO Format: %lld & %llu

Description

Given is an ordered deck of n cards numbered 1to n with card 1 at the top and card n at thebottom. The following operation is performed aslong as there are at least two cards in the deck:Throw away the top card and movethe card that is now on the top of thedeck to the bottom of the deck.Your task is to find the sequence of discardedcards and the last, remaining card.

Input

Each line of input (except the last) contains anumber n ≤ 50. The last line contains ‘0’ andthis line should not be processed.

Output

For each number from the input produce twolines of output. The first line presents the sequenceof discarded cards, the second line reportsthe last remaining card. No line will haveleading or trailing spaces. See the sample for theexpected format.

Sample Input

7

1

9

1 0

6

0

Sample Output

Discarded cards: 1, 3, 5, 7, 4, 2

Remaining card: 6

Discarded cards: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 4, 8, 12, 16, 2, 10, 18, 14

Remaining card: 6

Discarded cards: 1, 3, 5, 7, 9, 2, 6, 10, 8

Remaining card: 4

Discarded cards: 1, 3, 5, 2, 6

Remaining card: 4

比较简单的队列模拟题；

直接模拟即可；

#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<queue>
using namespace std;
queue<int> q;
int main()
{
    int n;
    int temp;
    while(scanf("%d",&n)!=EOF&&n)
    {
        if(n==1)
        {
            printf("Discarded cards:\n");
            printf("Remaining card: 1\n");
            continue;
        }
        for(int i=1;i<=n;++i)
        {
            q.push(i);
        }
        printf("Discarded cards: ");
        while(q.size()>2)
        {
            temp=q.front();
            q.pop();
            printf("%d, ",temp);
            temp=q.front();
            q.pop();
            q.push(temp);
        }
        temp=q.front();
        q.pop();
        printf("%d\n",temp);
        temp=q.front();
        q.pop();
        printf("Remaining card: %d\n",temp);
    }
    return 0;
}