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  1. # include <iostream> 
  2. # include <algorithm>
  3. # include <cstring>
  4. # include <vector>
  5. # include <cstdio> 
  6. # include <deque>
  7. # include <cmath>
  8. using namespace std;
  9. int main(){ 
  10. int n;
  11. string s;
  12. deque <int> d;
  13. while(cin>>s){
  14.    if(s=="push"){
  15.      cin>>n;
  16.      d.push_front(n);
  17.      cout<<"ok"<<endl;
  18.    }
  19.    else if(s=="size"){
  20.      cout<<d.size()<<endl;
  21.    }
  22.    else if(s=="clear"){
  23.      d.clear();
  24.      cout<<"ok"<<endl;
  25.    }
  26.    else if(s=="pop"){
  27.      cout<<d.front()<<endl;
  28.      d.pop_front();
  29.    }
  30.    else if(s=="front"){
  31.      cout<<d.front()<<endl;
  32.    }
  33.    else if(s=="exit"){
  34.      cout<<"bye"<<endl;
  35.      break;
  36.    }
  37. }
  38.  
  39. }
Success #stdin #stdout 0s 4596KB
comments (?)
stdin
copy 
push 1
front
exit
stdout
copy 
ok
1
bye
https://ideone.com/mgYlXj
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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