Submission #480317

#	Time	Username	Problem	Language	Result	Execution time	Memory
480317		omg	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>
using namespace std; 
void loop(string R, int combo) {
  R.push_back('A'); 
  if (press(R) > combo) return; 
  R.pop_back(); 
  R.push_back('B'); 
  if (press(R) > combo) return; 
  R.pop_back();
  R.push_back('X'); 
  if (press(R) > combo) return; 
  R.pop_back();
  R.push_back('Y'); 
  if (press(R) > combo) return; 
  R.pop_back();
}
string guess_sequence(int N) {
  string R=""; 
  int comboCur=0; 
  string target="AXYZ"; 
  for (int i=0;i<N;i++) {
    for (int j=0;j<4; j++) {
      R.push_back(target[j]); 
      if (press(R) > comboCur) break; 
      R.pop_back(); 
    }
    comboCur++; 
  }
  cout<<R; 
}

Compilation message (stderr)

combo.cpp: In function 'void loop(std::string, int)':
combo.cpp:5:7: error: 'press' was not declared in this scope
    5 |   if (press(R) > combo) return;
      |       ^~~~~
combo.cpp:8:7: error: 'press' was not declared in this scope
    8 |   if (press(R) > combo) return;
      |       ^~~~~
combo.cpp:11:7: error: 'press' was not declared in this scope
   11 |   if (press(R) > combo) return;
      |       ^~~~~
combo.cpp:14:7: error: 'press' was not declared in this scope
   14 |   if (press(R) > combo) return;
      |       ^~~~~
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:24:11: error: 'press' was not declared in this scope
   24 |       if (press(R) > comboCur) break;
      |           ^~~~~
combo.cpp:30:1: warning: no return statement in function returning non-void [-Wreturn-type]
   30 | }
      | ^