#include <iostream>
#include <string>
using namespace std;

int toNum(char c){
	if(c >= '0' && c <= '9') return c-'0';
	else return c-'A'+10;
}

int toChar(int i){
	if(i < 10) return (char)(i+'0');
	else return (char)(i-10+'A');
}

void process(string &s){
	int A = 0, B = 0;
	int pos = 0;
	while(s[pos] != '8'){
		int c = toNum(s[pos]);
		int addr;
		switch(c){
		case 0:{
			addr = toNum(s[pos+1])*16+toNum(s[pos+2]);
			A = toNum(s[addr]);
			pos+=3;
			break;}
		case 1:{
			addr = toNum(s[pos+1])*16+toNum(s[pos+2]);
			s[addr] = toChar(A);
			pos+=3;
			break;}
		case 2:{
			int temp = A;
			A = B;
			B = temp;
			pos++;
			break;}
		case 3:{
			int res = A + B;
			A = res%16;
			B = res/16;
			pos++;
			break;}
		case 4:{
			A = (A+1)%16;
			pos++;
			break;}
		case 5:{
			A = (A+15)%16;
			pos++;
			break;}
		case 6:{
			addr = toNum(s[pos+1])*16+toNum(s[pos+2]);
			if(A == 0) pos = addr;
			else pos+=3;
			break;}
		case 7:{
			addr = toNum(s[pos+1])*16+toNum(s[pos+2]);
			pos = addr;
			break;}
		default:{
			pos++;
			break;}
		}
	}
}

int main() {
	while(1){
		string s;
		cin >> s;
		if(s.length() != 256 || s[0] == '8') return 0;
		process(s);
		cout << s << endl;
	}
	return 0;
}

• 改了一下，还能更短吗？ (873) KatrineYang 2016-07-11 11:00:09