fs.cpp

#include <algorithm>
#include <cctype>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>
using namespace std;
 
#define DEBUG(x) cout << ">>> " << #x << " : " << x << endl;
#define REP(i,a) for (int i = 0; i < (a); ++i)
#define FOR(i,a,b) for (int i = (a); i <= (b); ++i)
#define FORD(i,a,b) for (int i = (a); i >= (b); --i)
inline bool EQ(double a, double b) { return fabs(a-b) < 1e-9; }
 
const int INF = 1<<29;
typedef long long ll;
///////////////////////////////////////////////////////////////////////////
 
string morse[][2] = {
  {"A", ".-"},
  {"B", "-..."},
  {"C", "-.-."},
  {"D", "-.."},
  {"E", "."},
  {"F", "..-."},
  {"G", "--."},
  {"H", "...."},
  {"I", ".."},
  {"J", ".---"},
  {"K", "-.-"},
  {"L", ".-.."},
  {"M", "--"},
  {"N", "-."},
  {"O", "---"},
  {"P", ".--."},
  {"Q", "--.-"},
  {"R", ".-."},
  {"S", "..."},
  {"T", "-"},
  {"U", "..-"},
  {"V", "...-"},
  {"W", ".--"},
  {"X", "-..-"},
  {"Y", "-.--"},
  {"Z", "--.."},
  {"_", "..--"},
  {".", "---."},
  {",", ".-.-"},
  {"?", "----"}
};
int M = 30;
 
const int MAX = 1024*6;
char in[MAX], in2[MAX];
int lens[MAX];
 
int main()
{
  while (gets(in))
  {
    int len = strlen(in), len2 = 0;
    REP(i, len)
    {
      REP(j, M)
	if (morse[j][0][0] == in[i])
	{
	  string & s = morse[j][1];
	  lens[i] = s.size();
	  REP(k, s.size())
	    in2[len2++] = s[k];
	  break; 
	}
    }
    reverse(lens, lens+len);
    len = 0;
 
    for (int i = 0; i < len2; i += lens[len++])
    {
      string s(in2+i, in2+i+lens[len]);
      REP(j, M)
	if (morse[j][1] == s)
	{
	  in[len] = morse[j][0][0];
	  break;
	}
    }
    printf("%s\n", in);
  }
 
  return 0;
}