Message Decoding

 UVA - 213 

題目傳送門

emmmm，此題按照紫書上的思路來即可，要麼太複雜

AC程式碼：

#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <map>
#include <stack>
#include <queue>
#include <vector>
#include <bitset>
#include <set>
#include <utility>
#include <sstream>
#include <iomanip>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define inf 0x3f3f3f3f
#define rep(i,l,r) for(int i=l;i<=r;i++)
#define lep(i,l,r) for(int i=l;i>=r;i--)
#define ms(arr) memset(arr,0,sizeof(arr))
//priority_queue<int,vector<int> ,greater<int> >q;
const int maxn = (int)1e5 + 5;
const ll mod = 1e9+7;
int readchar()
{
	for(;;) {
		int ch=getchar();
		if(ch!='\r'&&ch!='\n') return ch;
	}
}
int readint(int c)
{
	int v=0;
	while(c--) {
		v=v*2+readchar()-'0';
	}
	return v;
}
int code[8][1<<8];
int readcodes()
{
	ms(code);
	code[1][0]=readchar();
	for(int len=2;len<=7;len++) {
		for(int i=0;i<(1<<len)-1;i++) {
			int ch=getchar();
			if(ch==EOF) return 0;
			if(ch=='\n'||ch=='\r')return 1;
			code[len][i]=ch;
		}
	}
	return 1;
}
int main() 
{
    #ifndef ONLINE_JUDGE
    freopen("in.txt", "r", stdin);
    #endif
    //freopen("out.txt", "w", stdout);
    ios::sync_with_stdio(0),cin.tie(0);
    while(readcodes())
    {
    	for(;;) {
    		int len=readint(3);
    		if(len==0)
    			break;
    		for(;;) {
    			int v=readint(len);
    			if(v==(1<<len)-1) break;
    			putchar(code[len][v]);
    		}
    	}
    	putchar('\n');
    }
    return 0;
}