UVa-213 Message Decoding

难题！又是借鉴了rujia的代码。看了好几遍，凭记忆和理解手打的居然一次AC。

#include<iostream>

#include<cstdio>

#include<cstring>

using namespace std;

char code[8][1<<8];

bool readcode()

{

    memset(code,0,sizeof(code));

    for(int i=1;i<=7;i++)

        for(int j=0;j<(1<<i)-1;j++)

        {

            char ch=getchar();

            if(ch==EOF) return 0;

            if(ch=='\n') return 1;

            code[i][j]=ch;

        }

}

int readchar()

{

    char ch;

    while((ch=getchar())=='\n'){}

    return ch-'0';

}

int readint(int n)

{

    int a=0;

    while(n--)

        a+=readchar()*(1<<n);

    return a;

}

int main()

{

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

    while(readcode())

    {

        while(1)

        {

            int len=readint(3);

            if(len==0) break;

            while(1)

            {

                int p=readint(len);

                if(p==(1<<len)-1) break;

                cout<<code[len][p];

            }

        }

        getchar();

        cout<<endl;

    }

}