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
- 操作系统-2-存储管理之LRU页面置换算法(LeetCode146)
LRU缓存机制 题目:运用你所掌握的数据结构,设计和实现一个 LRU (最近最少使用) 缓存机制. 它应该支持以下操作: 获取数据 get 和 写入数据 put . 获取数据 get(key) - ...
- CVPR2020| 阿里达摩院最新力作SA-SSD
作者:蒋天园 Date:2020-04-16 来源:SA-SSD:阿里达摩院最新3D检测力作(CVPR2020) Brief 来自CVPR2020的研究工作,也是仅仅使用Lidar数据进行3D检测的文 ...
- python常用算数运算符、比较运算符、位运算符与逻辑运算符
编辑时间: 2019-09-04,22:58:49 算数运算符 '+'.'-'.'*'.'/' :加.减.乘.除 '**':指数运算, ‘//’:整除, ‘%‘:求余数 num_1 = 15; num ...
- EOS基础全家桶(七)合约表操作
简介 本篇我们开始来为后续合约开发做准备了,先来说说EOS内置的系统合约的功能吧,本篇将侧重于合约表数据的查询,这将有利于我们理解EOS的功能,并可以进行必要的数据查询. EOS基础全家桶(七)合约表 ...
- 基于ffmpeg不同编码方式转码后的psnr对比
一.测试说明: 源文件:1080psrc.mp4 时长:900秒 源文件信息:Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [S ...
- 1、2、2、3、4、5这六个数字,用java写一个main函数,打印出所有不同的排列, 如:512234、212345等. 要求:”4”不能在第三位,”3”与”5”不能相连。
private static String[] mustExistNumber = new String[] { "1", "2", "2" ...
- for循环,for…in循环,forEach循环的区别
for循环,for…in循环,forEach循环的区别for循环通关for循环,生成所有的索引下标for(var i = 0 ; i <= arr.length-1 ; i++){ 程序内容 } ...
- 如何使用python在短时间内寻找完数
完数:完全数(Perfect number),又称完美数或完备数,是一些特殊的自然数.它所有的真因子(即除了自身以外的约数)的和(即因子函数),恰好等于它本身.如果一个数恰好等于它的因子之和,则称该数 ...
- cheat sheet 简介
cheat sheet 速查表 /小抄 如果期末考试老师只让你让带一张A4纸,合法"作弊",纸上能写多少全凭自己本事,你会写什么?大部分人应该把整个课程的知识重点梳理一遍,方便记忆 ...
- Daily Scrum 12/17/2015
Process: Zhaoyang:完成了相册图片的异步加载. Yandong&Dong: 对Azure的体系架构进行学习和相应的编程. Fuchen: 对Oxford计划中的NLP接 ...