学习大神们开始写题解。也有助于自己的思路整理

废话：今天第一状态算是不错，第一题没有像上次那样由于物理不好WA10+发还不对。。。。但是这道难度不大的模拟自己还是注意不好细节。。。。比赛时间没做出来，关键是对Error的处理。

思路：简单粗暴的模拟，注意关键是对Error的处理。

程序如下：细节地方已用注释标记

传送门：http://http://acm.hdu.edu.cn/showproblem.php?pid=5083

官方题解：http://http://bestcoder.hdu.edu.cn/

#include<cstdio>
#include<cstring>
#include<iostream>
#include<string>
#include<cstdlib>
using namespace std;

string ADD="000001";
string SUB="000010";
string DIV="000011";
string MUL="000100";
string MOVE="000101";
string SET="000110";
string num[40]={"","00001","00010","00011","00100",
		   "00101","00110","00111","01000",
		   "01001","01010","01011","01100",
		   "01101","01110","01111","10000",
		   "10001","10010","10011","10100",
		   "10101","10110","10111","11000",
		   "11001","11010","11011","11100",
		   "11101","11110","11111"};
string s;

int dischange(int i,int j)//由已知数据为5位二进制，则可以输入i，j作为起止位置求其十进制
{
	int num=0,k;
	for(k=i;k<=j;k++)
		num=num*2+s[k]-48;//注意字符与数字的区别
	return num;
}

void no()
{
	cout<<"Error!\n";
}

int main()
{
	//freopen("input.txt","r",stdin);
	int type;
	while(cin>>type)
	{
		cin>>s;
		if (type==1)
		{
			int flag=0;
			if (s=="ADD") cout<<ADD;
			else if (s=="SUB") cout<<SUB;
			else if (s=="DIV") cout<<DIV;
			else if (s=="MUL") cout<<MUL;
			else if (s=="MOVE") cout<<MOVE;
			else if (s=="SET") flag=1;
			if (flag==0)
			{
				int number;
				getchar();//处理空格
				getchar();//处理逗号
				scanf("%d",&number);
				cout<<num[number];
				getchar();
				getchar();
				scanf("%d",&number);
				cout<<num[number];
				printf("\n");
			}
			else
			{
				cout<<SET;
				int number;
				getchar();
				getchar();
				scanf("%d",&number);
				cout<<num[number];
				printf("00000\n");//处理b数字
			}
		}
		else
		{
			int flag=0;
			string s0;
			s0=s.substr(0,6);//自己的基础不扎实，函数不熟悉
			int num1=dischange(6,10);
			int num2=dischange(11,15);
			
			if (s0=="000001")
				if (num1&&num2) printf("ADD R%d,R%d\n",num1,num2);
				else no();
			else if (s0=="000010")
				if (num1&&num2) printf("SUB R%d,R%d\n",num1,num2);
				else no();
			else if (s0=="000011")
				if (num1&&num2) printf("DIV R%d,R%d\n",num1,num2);
				else no();
			else if (s0=="000100")
				if (num1&&num2) printf("MUL R%d,R%d\n",num1,num2);
				else no();
			else if (s0=="000101")
				if (num1&&num2) printf("MOVE R%d,R%d\n",num1,num2);
				else no();
			else if (s0=="000110")
				if (num1&&!num2) printf("SET R%d\n",num1);
				else no();
			else no();//所有的其他的情况都是不符合题意的
		}
	}
	return 0;
}