Submission #654378

#	Time	Username	Problem	Language	Result	Execution time	Memory
654378		atigun	Flight to the Ford (BOI22_communication)	C++17	Compilation error	0 ms	0 KiB

communication

#include"communication.h"

using namespace std;
typedef long long ll;

void encode(int N, int X){
  vector<int> v;
  for(int bit = 0; bit <= 2; bit++){
    bool on = (X >> bit)&1;
    v.push_back(send(on));
    v.push_back(send(on));
    while(v.end()[-1] != v.end()[-2])
      v.push_back(send(on));
  }
}

pair<int, int> decode(int N){
  int solution = 0;
  vector<int> v;
  for(int bit = 0; bit <= 2; bit++){
    bool on = 0;
    v.push_back(receive());
    v.push_back(receive());
    while(v.end()[-1] != v.end()[-2])
      v.push_back(receive());
    if(v.end()[-1])
      solution|= (1<<bit);
  }
  return make_pair(solution, solution);
}

Compilation message (stderr)

communication.cpp: In function 'void encode(int, int)':
communication.cpp:7:3: error: 'vector' was not declared in this scope
    7 |   vector<int> v;
      |   ^~~~~~
communication.cpp:2:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
    1 | #include"communication.h"
  +++ |+#include <vector>
    2 | 
communication.cpp:7:10: error: expected primary-expression before 'int'
    7 |   vector<int> v;
      |          ^~~
communication.cpp:10:5: error: 'v' was not declared in this scope
   10 |     v.push_back(send(on));
      |     ^
communication.cpp: In function 'std::pair<int, int> decode(int)':
communication.cpp:19:3: error: 'vector' was not declared in this scope
   19 |   vector<int> v;
      |   ^~~~~~
communication.cpp:19:3: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
communication.cpp:19:10: error: expected primary-expression before 'int'
   19 |   vector<int> v;
      |          ^~~
communication.cpp:22:5: error: 'v' was not declared in this scope
   22 |     v.push_back(receive());
      |     ^
communication.cpp:21:10: warning: unused variable 'on' [-Wunused-variable]
   21 |     bool on = 0;
      |          ^~