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Message Decoding
emmmm,此题按照紫书上的思路来即可,要么太复杂
AC代码:
#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;
}