Codeforce 239 B. Easy Tape Programming
There is a programming language in which every program is a non-empty sequence of "<" and ">" signs and digits. Let's explain how the interpreter of this programming language works. A program is interpreted using movement of instruction pointer (IP) which consists of two parts.
- Current character pointer (CP);
- Direction pointer (DP) which can point left or right;
Initially CP points to the leftmost character of the sequence and DP points to the right.
We repeat the following steps until the first moment that CP points to somewhere outside the sequence.
- If CP is pointing to a digit the interpreter prints that digit then CP moves one step according to the direction of DP. After that the value of the printed digit in the sequence decreases by one. If the printed digit was 0 then it cannot be decreased therefore it's erased from the sequence and the length of the sequence decreases by one.
- If CP is pointing to "<" or ">" then the direction of DP changes to "left" or "right" correspondingly. Then CP moves one step according to DP. If the new character that CP is pointing to is "<" or ">" then the previous character will be erased from the sequence.
If at any moment the CP goes outside of the sequence the execution is terminated.
It's obvious the every program in this language terminates after some steps.
We have a sequence s1, s2, ..., sn of "<", ">" and digits. You should answer q queries. Each query gives you l and r and asks how many of each digit will be printed if we run the sequence sl, sl + 1, ..., sr as an independent program in this language.
Input
The first line of input contains two integers n and q (1 ≤ n, q ≤ 100) — represents the length of the sequence s and the number of queries.
The second line contains s, a sequence of "<", ">" and digits (0..9) written from left to right. Note, that the characters of s are not separated with spaces.
The next q lines each contains two integers li and ri (1 ≤ li ≤ ri ≤ n) — the i-th query.
Output
For each query print 10 space separated integers: x0, x1, ..., x9 where xi equals the number of times the interpreter prints i while running the corresponding program. Print answers to the queries in the order they are given in input.
Examples
input
7 4
1>3>22<
1 3
4 7
7 7
1 7
output
0 1 0 1 0 0 0 0 0 0
2 2 2 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
2 3 2 1 0 0 0 0 0 0
这是一道模拟题,模拟一个他叙述的过程就是一个指针一个方向标记遇到>改成向右的方向,遇见<改成向左,每次遇到数字输出数字并将数字减一,减到零就删去,遇到连续的两个方向就删去先访问的那一个,给定一个子区间,求0-9输出了几遍。
#include<bits/stdc++.h>
#define Swap(a,b) a^=b^=a^=b
#define cini(n) scanf("%d",&n)
#define cinl(n) scanf("%lld",&n)
#define cinc(n) scanf("%c",&n)
#define coui(n) printf("%d",n)
#define couc(n) printf("%c",n)
#define coul(n) printf("%lld",n)
#define speed ios_base::sync_with_stdio(0);//切不可用scnaf;
#define Max(a,b) a>b?a:b
#define Min(a,b) a<b?a:b
using namespace std;
typedef long long ll;
const int INF=0x3f3f3f3f;
const int maxn=1e6+10;
const double esp=1e-9;
int m,n,x,y,lll[maxn],rr[maxn];
int l[110];
int r[110];
int ans[10];
string w;
int a[10];
int main()
{
cin>>n>>m>>w;
while(m--)
{
int l,r;
cin>>l>>r;
memset(a,0,sizeof(a));
string t=w.substr(l-1,r-l+1);
int lll=0,rr=1;
int E=t.size();
while(lll>=0&&lll<E)
{
if(t[lll]>='0'&&t[lll]<='9')
{
a[t[lll]-'0']++;
t[lll]--;
if(t[lll]<'0')
{
t.erase(lll,1);
if(rr<0)lll+=rr;
}
else lll+=rr;
}
else
{
if(t[lll]=='<') rr=-1;
else rr=1;
if(lll+rr>=0&&lll+rr<E&&(t[lll+rr]=='<'||t[lll+rr]=='>'))
{
t.erase(lll,1);
if(rr<0) lll+=rr;
}
else lll+=rr;
}
}
for(int i=0;i<10; i++)
cout<<a[i]<<' ';
cout<<endl;
}
return 0;
}
Codeforce 239 B. Easy Tape Programming的更多相关文章
- 【codeforces 239B】Easy Tape Programming
[题目链接]:http://codeforces.com/contest/239/problem/B [题意] 给你一个长度为n的字符串,只包括'<">'以及数字0到9; 给你q ...
- Codeforces Round #148 (Div. 2)
A. Two Bags of Potatoes 枚举倍数. B. Easy Tape Programming (待补) C. Not Wool Sequences 考虑前缀异或和. \[answer ...
- 嵌入式web服务
:boa.thttpd.mini_httpd.shttpd.lighttpd.goaheand.appweb和apache等. Boa 1.介绍 Boa诞生于1991年,作者Paul Philips. ...
- Range Minimum Query and Lowest Common Ancestor
作者:danielp 出处:http://community.topcoder.com/tc?module=Static&d1=tutorials&d2=lowestCommonAnc ...
- 嵌入式设备web服务器比较
目录(?)[-] Boa Thttpd Mini_httpd Shttpd Lighttpd Goahead AppWeb Apache 开发语言和开发工具 结论 备注 现在在嵌入式设备中所使用的 ...
- 5步搭建GO环境
Easy Go Programming Setup for Windows Dec 23, 2014 I’ve had to do this more than once recently, so I ...
- 使用 Rcpp
正如我们所提到的那样,并行计算只有在每次迭代都是独立的情况下才可行,这样最终结果才不会依赖运行顺序.然而,并非所有任务都像这样理想.因此,并行计算可能会受到影响.那么怎样才能使算法快速运行,并且可以轻 ...
- AwesomePerfCpp 性能优化
Contents Talks Articles Sites/Blogs Tools Libraries Books About Talks 2013: Going Native 2013 - Andr ...
- OpenMP 并行程序设计入门
OpenMP 是一个编译器指令和库函数的集合,主要是为共享式存储计算机上的并行程序设计使用的. 0. 一段使用 OpenMP 的并行程序 #include <stdio.h> #inclu ...
随机推荐
- linux升级python2.7到3.7.0
1.下载python3.7.0压缩包在 wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz 2.解压缩 tar -zxvf Py ...
- javascript入门 之 ztree(七 结点的查询)
<!DOCTYPE html> <HTML> <HEAD> <meta http-equiv="content-type" content ...
- django->model模型操作(数据库操作)
一.字段类型 二.字段选项说明 三.内嵌类参数说明abstract = Truedb_table = 'table_name' #表名,默认的表名是app_name+类名ordering = ['id ...
- Nodejs开发微信公众号中控服务
本文已同步到专业技术网站 www.sufaith.com, 该网站专注于前后端开发技术与经验分享, 包含Web开发.Nodejs.Python.Linux.IT资讯等板块. 本项目旨在为多个微信公众号 ...
- Array(数组)对象-->indexOf() 方法
1.定义和用法 indexOf() 方法可返回某个指定的字符串值在字符串中首次出现的位置,即下标. 如果没有找到匹配的字符串则返回 -1. 语法: string.indexOf(searchvalue ...
- 在Sping的配置文件中,关于dataSource的配置,就我们常用的方法大致可以有三种:
在Sping的配置文件中,关于dataSource的配置,就我们常用的方法大致可以有三种: 1.一般的配置方法,直接在配置中指定其值.具体的例子我们参照Mysql的配置如下: <bean id= ...
- 用Taro做个微信小程序Todo, 小白工作记录
微信小程序框架: Taro 做微信小程序的框架, 几个比较主流的: 官方的WePY: https://tencent.github.io/wepy/document.html#/ 美团的mpvue: ...
- 数据结构(C语言版)---栈
1.栈:仅在表尾进行插入和删除操作的线性表.后进先出LIFO. 1)表尾端(允许插入和删除的一端)为栈顶,表头端(不允许插入和删除的一端)为栈底. 2)入栈:插入元素的操作.出栈:删除栈顶元素 3)栈 ...
- mongodb connection refused because too many open connections: 819
Env Debian 9 # 使用通用二进制方式安装 # mongod --version db version v3.4.21-2.19 git version: 2e0631f5e0d868dd5 ...
- 利用 PhpQuery 随机爬取妹子图
前言 运行下面的代码会随机得到妹子图的一张图片,代码中的phpQuery可以在这里下载:phpQuery-0.9.5.386.zip <?php require 'phpQuery.php'; ...