fork(3) download
copy 
  1. #include <iostream>
  2. #include <string>
  3. #include <regex>
  4.  
  5. using namespace std;
  6.  
  7.  
  8. long long int equalMatches(string str, regex pattern)
  9. {
  10.     smatch matches;
  11.     string temp;
  12.     size_t position=str.find('=',0);
  13.     string lewa=str.substr(0,position);
  14.     string prawa=str.substr(position+1,str.size()-position);
  15.     long long int suma=0;
  16.     while(regex_search(lewa, matches, pattern))
  17.     {
  18.         if (matches[2]=="")
  19.         {
  20.             suma+=1;
  21.         }
  22.         else
  23.         {
  24.             temp=matches[2];
  25.             suma+=atoll(temp.c_str());
  26.         }
  27.         lewa=matches.suffix();
  28.     }
  29.     while(regex_search(prawa, matches, pattern))
  30.     {
  31.         if (matches[2]=="")
  32.         {
  33.             suma-=1;
  34.         }
  35.         else
  36.         {
  37.             temp=matches[2];
  38.             suma-=atoll(temp.c_str());
  39.         }
  40.         prawa=matches.suffix();
  41.     }
  42.     return suma;
  43. }
  44.  
  45.  
  46. int main()
  47. {
  48.     long long int n;
  49.     long long int x;
  50.     long long int L;
  51.     cin>>n;
  52.  
  53.     regex x_plus("(^|[+])(\\d*?)(x{1})");
  54.     regex x_minus("(-)(\\d*?)(x{1})");
  55.     regex L_plus("(^|[+])(\\d+)([^x\\d]|$)");
  56.     regex L_minus("(-)(\\d+)([^x\\d]|$)");
  57.     for (int i=0; i<n; i++)
  58.     {
  59.         string rownanie;
  60.         cin>>rownanie;
  61.  
  62.         x=equalMatches(rownanie,x_plus)-equalMatches(rownanie,x_minus);
  63.         L=equalMatches(rownanie,L_plus)-equalMatches(rownanie,L_minus);
  64.  
  65.         if (x==0)
  66.             cout<<"NIE"<<endl;
  67.         else
  68.             cout<<-L/x<<endl;
  69.     }
  70.  
  71.     return 0;
  72. }
Success #stdin #stdout 0s 15344KB
comments (?)
stdin
copy 
7
-x=-x
x=x
-2+x=x
-2-x=-x
-2-x=-1-x
2-x=-4+2x
-2x+x-1=-4x+5
stdout
copy 
NIE
NIE
NIE
NIE
NIE
2
2
https://ideone.com/gZMRlI
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!