CF 264A(向内的双向队列)

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内容目录
C. Escape from Stones
time limit per test

2 seconds

memory limit per test

256 megabytes

input

standard input

output

standard output

Squirrel Liss lived in a forest peacefully, but unexpected trouble happens. Stones fall from a mountain. Initially Squirrel Liss occupies an interval [0, 1]. Next, n stones
will fall and Liss will escape from the stones. The stones are numbered from 1 to n in order.

The stones always fall to the center of Liss's interval. When Liss occupies the interval [k - d, k + d] and a stone falls to k,
she will escape to the left or to the right. If she escapes to the left, her new interval will be [k - d, k]. If she escapes to the right,
her new interval will be [k, k + d].

You are given a string s of length n. If the i-th
character of s is "l" or "r",
when the i-th stone falls Liss will escape to the left or to the right, respectively. Find the sequence of stones' numbers from left to right after all
the n stones falls.

Input

The input consists of only one line. The only line contains the string s (1 ≤ |s| ≤ 106).
Each character in s will be either "l" or "r".

Output

Output n lines — on the i-th line you should print
the i-th stone's number from the left.

Sample test(s)
input
llrlr
output
3
5
4
2
1
input
rrlll
output
1
2
5
4
3
input
lrlrr
output
2
4
5
3
1
Note

In the first example, the positions of stones 1, 2, 3, 4, 5 will be , respectively. So you should print the sequence: 3, 5, 4, 2, 1.

不能用模拟double+除法，会爆精度啊！！（long double 也不行）

其实只要根据性质，在序列前后添加即可。

靠，人生中的处女Hack，竟然是被Hack…(受？）


#include<cstdio>
#include<iostream>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<functional>
#include<algorithm>
#include<cctype>
using namespace std;
#define MAXN (1000000+10)
//pair<double,int> a[MAXN];
char s[MAXN];
int n,a[MAXN];
int main()
{
	scanf("%s",&s);
	n=strlen(s);
	int l=1,r=n;
	for (int i=0;i<n;i++)
	{
		if (s[i]=='l') a[r--]=i+1;
		else a[l++]=i+1;
	}



	for (int i=1;i<=n;i++) cout<<a[i]<<endl;



}