##############以下是程式碼###############

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

int ch(char $input)
   {
   //cout << $input << "ch+" << endl;
   if ($input=='I')
      {return 1;}
   else if ($input=='V'){return 5;}
   else if ($input=='X'){return 10;}
   else if ($input=='L'){return 50;}
   else if ($input=='C'){return 100;}
   else if ($input=='D'){return 500;}
   else if ($input=='M'){return 1000;}
   else
      {return 0;}
 
   }
 
int num(string $input)
   {
   int $ssun=0;
   int $k;
   for ($k=($input.size()-1);$k >= 0;$k--)
      {
      //cout << "+" ;
      if ($k >=($input.size()-1))
         {
         $ssun=$ssun+ch($input[$k]);
         }
      else
         {
         if (ch($input[$k+1]) > ch($input[$k]))
             {
             $ssun=abs($ssun-ch($input[$k]));
             }
          else
             {
             $ssun=$ssun+ch($input[$k]);
             }
         }
     
      }
   //cout << $input << "num+" << endl;
   return $ssun;
   }
string say(int $input)
   {
   int $i,$k,$tmp;
   int $gogoa[5]={10000,1000,100,10,1};
   string $hahaa[5]={"","M","C","X","I"};
   int $gogob[5]={5000,500,50,5,0};
   string $hahab[5]={"","","D","L","V"};
   if ($input == 0)
      {
      cout << "ZERO" ;
      }
   for ($i=1;$i<=4;$i++)
      {
      $tmp=($input / $gogoa[$i]);
      if ($tmp > 0 && $tmp < 4 )
         {
         for ($k=1;$k<=$tmp;$k++)
            {
            cout << $hahaa[$i] ;
            }
         $input=$input-($gogoa[$i]*$tmp);
         }
      else if ($tmp == 4 )
         {
         cout << $hahaa[$i] << $hahab[$i] ;
         $input=$input-($gogoa[$i]*4);
         }
      else if ($tmp >= 5 && $tmp < 9 )
         {
         cout << $hahab[$i] ;
         for ($k=1;$k<=($tmp-5);$k++)
            {
            cout << $hahaa[$i] ;
            }
         $input=$input-($gogoa[$i]*$tmp);
         }
      else if ($tmp == 9 )
         {
         cout << $hahaa[$i] << $hahaa[$i-1] ;
         $input=$input-($gogoa[$i]*9);
         }
      else
         {
        
         }
      }
   cout << endl;
   }





int main()
    {
  
    string $a,$b;
    int $na,$nb,$nab;
    while ( cin >> $a && $a != "#")
       {

          cin >> $b;
          //羅馬數字的讀法--->從右讀到左，比自己小則是減去，例如XLIV=50- 10- 1+5=44
           //先轉數字
          
           $na=num($a);
           $nb=num($b);
           $nab=abs($na-$nb);
          
           //cout << $na << "-" << $nb << "=" << $nab << " is " ;
           say($nab);
         
           //cout << $a.size() << "+" << $b.size() << endl;

       }
  
  
  
  
    //system("pause");
    return 0;
    }

 

#####################################

我在DEV C++跑都OK

但是貼上來測反而都是RE

嗯嗯嗯，實在看不出來哪邊的index有超過

請大家幫幫忙！感嗯！

我是C++新手