Submission #552286

#	Time	Username	Problem	Language	Result	Execution time	Memory
552286		ctphong	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>
using namespace std;
#define fto(i,a,b) for(int i = a; i <= b; ++i)
string s;

int press(string s) {
	cout << s << endl;
	fflush(stdout);
	int gt; cin >> gt;
	return gt;
}

string guess_sequence(int N) {
	int n; cin >> n;
	string gt = "";
	if (out(s+"X") == 1) s = s + "X";
	else if (out(s+"Y") == 1) s = s + "Y";
	else if (out(s+"A") == 1) s = s + "A";
	else if (out(s+"B") == 1) s = s + "B";
	gt = s;
	fto (i, 2, n) {
		if (out(s+"X"+gt) == i) s = s + "X";
		else if (out(s+"Y"+gt) == i) s = s + "Y";
		else if (out(s+"A"+gt) == i) s = s + "A";
		else if (out(s+"B"+gt) == i) s = s + "B";
	}
	return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:16:6: error: 'out' was not declared in this scope
   16 |  if (out(s+"X") == 1) s = s + "X";
      |      ^~~
combo.cpp:22:7: error: 'out' was not declared in this scope
   22 |   if (out(s+"X"+gt) == i) s = s + "X";
      |       ^~~