Submission #310845

#	Time	Username	Problem	Language	Result	Execution time	Memory
310845		skippre	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;

string guess_sequence(int N) {
	string ans="";
	char a, b, x, y;
	if(press("AB")) { x='X'; y='Y'; press("A") ? (a='A', b='B') : (a='B', b='A'); }
	else { a='X'; b='Y'; press("X") ? (a='X', b='Y') : (a='Y', b='X'); }
	ans+=a;
	if(N==1) return ans;
	for(int i=1; i<=N-2; i++) {
		string cur = ans+b+b + ans+c + ans+b+c + ans+b+d;
		int j=press(cur);
		if(j==i) ans+=d;
		else if(j==i+1) ans+=c;
		else ans+=b;
	}
	if(press(ans+b)==N) ans+=b;
	else if(press(ans+c)==N) ans+=c;
	else ans+=d;
	return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:13:30: error: 'c' was not declared in this scope
   13 |   string cur = ans+b+b + ans+c + ans+b+c + ans+b+d;
      |                              ^
combo.cpp:13:50: error: 'd' was not declared in this scope
   13 |   string cur = ans+b+b + ans+c + ans+b+c + ans+b+d;
      |                                                  ^
combo.cpp:20:20: error: 'c' was not declared in this scope
   20 |  else if(press(ans+c)==N) ans+=c;
      |                    ^
combo.cpp:21:12: error: 'd' was not declared in this scope
   21 |  else ans+=d;
      |            ^