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

机器码和操作互相转化

注意SET还要判断末5位不为0输出Error

#pragma comment(linker, "/STACK:36777216")

#pragma GCC optimize ("O2")

#include <cstdio>

#include <cstdlib>

#include <cmath>

#include <cstring>

#include <string>

#include <queue>

#include <map>

#include <iostream>

#include <algorithm>

using namespace std;

#define RD(x) scanf("%d",&x)

#define RD2(x,y) scanf("%d%d",&x,&y)

#define RD3(x,y,z) scanf("%d%d%d",&x,&y,&z)

#define clr0(x) memset(x,0,sizeof(x))

#define eps 1e-9

const double pi = acos(-1.0);

typedef long long LL;

const int modo = 1e9 + 7;

const int INF = 0x3f3f3f3f;

const int maxn = 55,maxm = 1e4 + 5;

string op[10] = {"","ADD","SUB","DIV","MUL","MOVE","SET"};

int real[26];

char s[maxn];

int getnum(int x,int y)

{

    int ans = 0;

    for(int i = x;i <= y;++i){

        ans += (s[i] - '0')<<(y-i);

    }

    return ans;

}

void print(int x,int len)

{

    int ans[10],num = 0;

    while(x){

        ans[num++] = x&1;

        x>>=1;

    }

    while(--len >= num)

        printf("0");

    while(num){

        printf("%d",ans[--num]);

    }

    return ;

}

int main(){

    int _;

    for(int i = 1;i <= 6;++i){

        real[op[i][op[i].length() - 1] - 'A'] = i;

    }

    //freopen("in.txt", "r", stdin);

    while(~scanf("%d",&_)){

        if(_ == 0){

            scanf("%s",s);

            int _op = getnum(0,5);

            if(_op >= 7 || _op <= 0){

                printf("Error!\n");

                continue;

            }

            if(_op == 6){

                int x = getnum(6,10),y = getnum(11,15);

                if(!x || x > 31 || y != 0){

                    printf("Error!\n");

                    continue;

                }

                cout<<op[_op];

                printf(" R%d\n",x);

            }

            else{

                int x = getnum(6,10),y = getnum(11,15);

                if(!x || !y || x > 31|| y > 31){

                    printf("Error!\n");

                    continue;

                }

                cout<<op[_op];

                printf(" R%d,R%d\n",x,y);

            }

        }else{

            int __ = 0,_op,_a,_b;

            scanf("%s",s);

            _op = real[s[strlen(s) - 1] - 'A'];//cout<<s<<' '<<_op<<endl;

            if(_op == 6){

                scanf(" R%d",&_a);

                print(_op,6),print(_a,5),print(0,5);

                puts("");

            }else{

                scanf(" R%d,R%d",&_a,&_b);

                print(_op,6),print(_a,5),print(_b,5);

                puts("");

            }

        }

    }

    return 0;

}