Submission #1348564

#	Time	Username	Problem	Language	Result	Execution time	Memory
1348564		faqinyeager	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include "combo.h"
using namespace std;
string guess_sequence(int n)
{
	string s;
	string ab = "AB", A = "A", X = "X";
	if(press(AB) > 0){
		if(press(A) > 0) s = "A";
		else s = "B";
	}else{
		if(press(X)) > 0)) s = "X";
		else s = "Y";
	}
	string a, b, c;
	if(s == "A") a = "B", b = "X", c = "Y";
	else if(s == "B") a = "A", b = "X", c = "Y";
	else if(s == "X") a = "A", b = "B", c = "Y";
	else a = "A", b = "B", c = "X";
	
	for(int i = 1; i < n; i++){
		int cnt = press(s + a + s + b + a + s + b + b + s + b + c);
		if(cnt == i - 1){
			s += c;
		}else if(cnt == i){
			s += b;
		}else{
			s += a;
		}
	}
	return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:7:18: error: 'AB' was not declared in this scope; did you mean 'A'?
    7 |         if(press(AB) > 0){
      |                  ^~
      |                  A
combo.cpp:11:30: error: expected primary-expression before '>' token
   11 |                 if(press(X)) > 0)) s = "X";
      |                              ^