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  1. #include<iostream>
  2. #include<string>
  3. using namespace std;
  4.  
  5. string replaceChar(string str, char ch1, char ch2) {
  6.   for (int i = 0; i < str.length(); i++) {
  7.     if (str[i] == ch1)
  8.       str[i] = ch2;
  9.   }
  10.  
  11.   return str;
  12. }
  13.  
  14. int main()
  15. {
  16.     string str,mystr,mystr2;
  17.     long int i,n,t,rule,len;
  18.     char ch,ph;
  19.     cin>>t;
  20.     while(t--)
  21.     {
  22.         cin>>n;
  23.         mystr = ""; mystr2 = "";
  24.         for(i=0;i<n;i++)
  25.         {
  26.             cin>>ch;
  27.             cin>>ph;
  28.             if(mystr2.find(ch)!= -1)
  29.             {
  30.                 continue;
  31.             }
  32.             mystr2 += ph;
  33.             mystr += ch;
  34.         }
  35.         cin>>str;
  36.         rule = mystr.length();
  37.         for(i=0;i<rule;i++)
  38.         {
  39.             str = replaceChar(str,mystr[i],mystr2[i]);
  40.         }
  41.         len = str.length();
  42.         i = len-1;
  43.         while(str[i]=='0')
  44.         {
  45.             i--;
  46.         }
  47.         if(str[i]=='.')
  48.             i--;
  49.         str.erase(i+1,len);
  50.         //cout<<str<<endl;
  51.         for(i=0;i<str.length();i++)
  52.         {
  53.             if(str[i]!='0')
  54.                 break;
  55.         }
  56.         str.erase(0,i);
  57.         //cout<<str<<endl;
  58.         if(str.length()==0)
  59.             str = "0";
  60.         cout<<str<<endl;
  61.     }
  62.     return 0;
  63. }
Success #stdin #stdout 0s 3480KB
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https://ideone.com/gXgNOa
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
secret

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