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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4. #define NeedForSpeed ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
  5. #define int long long
  6. #define endl '\n'
  7. #define all(x) (x).begin(), (x).end()
  8. #define Create_File freopen("code.in", "r", stdin);
  9. const long long INF = 1ll << 32;
  10. const long double PI = acos(-1);
  11. const int N = 200005, mod = 1000000007;
  12.  
  13. int32_t main()
  14. {
  15.   NeedForSpeed;
  16.   // Create_File;
  17.  
  18.   int test_cases = 1;
  19.   // cin >> test_cases;
  20.   int cases = 1;
  21.   while (test_cases--)
  22.   {
  23.     int n;
  24.     cin >> n;
  25.     if (n % 2 == 1)
  26.       cout << "WA" << endl;
  27.     else
  28.     {
  29.  
  30.       stack<string> st;
  31.       bool acc = true;
  32.       int cnt = 1;
  33.       for (int i = 0; i < n; i++)
  34.       {
  35.  
  36.         string start;
  37.         cin >> start;
  38.         if (start == "EndHeader" && st.top() != "Header" && st.empty() != 1)
  39.         {
  40.           acc = 0;
  41.         }
  42.         if (start[0] == 'E' and start[1] == 'n' and start[2] == 'd' and i == 0)
  43.         {
  44.           acc = 0;
  45.         }
  46.         else if (start[0] != 'E' and start[1] != 'n' and start[2] != 'd')
  47.         {
  48.           st.emplace(start);
  49.         }
  50.         else
  51.         {
  52.           string s = st.top();
  53.           bool optimal = true;
  54.           for (int i = 0; i < s.size(); i++)
  55.           {
  56.             if (s[i] == start[i + 3])
  57.               optimal = true;
  58.             else
  59.             {
  60.               acc = 0;
  61.               break;
  62.               optimal = 0;
  63.             }
  64.           }
  65.           if (optimal)
  66.             st.pop();
  67.           else
  68.             acc = 0;
  69.         }
  70.       }
  71.       if (acc and st.empty() == true)
  72.         cout << "ACC" << endl;
  73.       else
  74.         cout << "WA" << endl;
  75.     }
  76.   }
  77.   return 0;
  78. }
Success #stdin #stdout 0.01s 5432KB
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WA
https://ideone.com/vSYAWh
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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