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  1. #define _CRT_SECURE_NO_WARNINGS
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. stack <string> sk;
  6. int main() {
  7. ios::sync_with_stdio(false);
  8. cin.tie(nullptr);
  9. //freopen(stdin);
  10.  
  11.       int n;
  12.       cin>>n;
  13.       int start=n;
  14.       if(n%2!=0)
  15.       {
  16.         cout<<"WA\n";
  17.       }
  18.  
  19.       else
  20.       {
  21.       bool flag=true;
  22.       int countHeader=0;
  23.       while(n--)
  24.       {
  25.         string s;
  26.         cin>>s;
  27.  
  28.  
  29.         if(s.substr(0,3)!="End")
  30.         {
  31.             sk.push(s);
  32.             if(s=="Header")
  33.             {
  34.                 countHeader++;
  35.             }
  36.  
  37.         }
  38.         else
  39.         {
  40.             if(!sk.empty() &&s.substr(3)==sk.top())
  41.             {
  42.                 sk.pop();
  43.             }
  44.             else
  45.             {
  46.                 flag=false;
  47.                 break;
  48.             }
  49.         }
  50.       }
  51.  
  52.       if(sk.size()!=0|| !flag|| countHeader!=1 )
  53.       {
  54.         cout<<"WA\n";
  55.       }
  56.       else
  57.       {
  58.       cout<<"ACC\n";
  59.       }
  60.     }
  61.  
  62. return 0;
  63. }
Success #stdin #stdout 0.01s 5280KB
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stdin
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Standard input is empty
stdout
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WA
https://ideone.com/1U6b7B
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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