Submission #127853

#	Time	Username	Problem	Language	Result	Execution time	Memory
127853		super_j6	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string.h>
using namespace std;
#define endl '\n'

string s = "";
char c[4] = {'A', 'B', 'X', 'Y'};
int bad = 4;

string guess_sequence(int n){
	return s;
}

char r(int x){
	return c[x + (x >= bad)];
}

void find1(){
	if(press(s + r(0) + s + r(1)) > 0){
		if(press(s + r(0))){
			s += r(0);
			bad = 0;
		}else{
			s += r(1);
			bad = 1;
		}
	}else{
		if(press(s + r(2))){
			s += r(2);
			bad = 2;
		}else{
			s += r(3);
			bad = 3;
		}
	}
}

void find2(){
	int x = press(s + r(1) + s + r(2) + r(0) + s + r(2) + r(1) + s + r(2) + r(2));
	
	if(x == 0){
		s += r(0);
	}else if(x == 1){
		s += r(1);
	}else{
		s += r(2);
	}
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	
	int n;
	cin >> n;
	
	for(int i = 0; i < n; i++){
		if(i == 0 || i == n - 1) find1();
		else find2();
	}

	return 0;
}

Compilation message (stderr)

combo.cpp: In function 'void find1()':
combo.cpp:21:5: error: 'press' was not declared in this scope
   21 |  if(press(s + r(0) + s + r(1)) > 0){
      |     ^~~~~
combo.cpp: In function 'void find2()':
combo.cpp:41:10: error: 'press' was not declared in this scope
   41 |  int x = press(s + r(1) + s + r(2) + r(0) + s + r(2) + r(1) + s + r(2) + r(2));
      |          ^~~~~