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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     ll n;
  8.     cin>>n;
  9.     stack<string>st ;
  10.     bool w=0;
  11.     ll cnt=0;
  12.     for(int i=0;i<n;i++){
  13.        string x;cin>>x;
  14.        if(i==0&&x=="EndHeader"){
  15.            w=1;
  16.            break;
  17.        }
  18.        if(x=="Header")cnt++;
  19.        if(i==0&&x!="Header"){
  20.            w=1;
  21.            break;
  22.        }
  23.        if(x[0]!='E'&&x[1]!='n'&&x[2]!='d')st.push(x);
  24.        else {
  25.            string s=st.top();
  26.            st.pop();
  27.             string t="End"+s;
  28.             // cout<<t<<"\n";
  29.             if(t!=x){
  30.                 w=1;
  31.                 break;
  32.             }
  33.        }
  34.     }
  35.     // cout<<st.size()<<"\n";
  36.     if(w||st.size()>=1||cnt>1)cout<<"WA\n";
  37.     else cout<<"ACC\n";
  38.     return 0;
  39. }
Success #stdin #stdout 0.01s 5264KB
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stdin
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Standard input is empty
stdout
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WA
https://ideone.com/vBik0f
language:
C++ (gcc 8.3)
created:
8 days ago
visibility:
public

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