Submission #868044

#	Time	Username	Problem	Language	Result	Execution time	Memory
868044		TAhmed33	Flight to the Ford (BOI22_communication)	C++17	Compilation error	0 ms	0 KiB

communication

#include <bits/stdc++.h>
#include <communication.h>
using namespace std;
vector <string> arr = {
	"1010",
	"1001",
	"0101",
	"0100",
	"0010",
	"0001",
	"0000"
};
string pp (string a, string b) {
	string ret;
	for (int i = 0; i < x; i++) {
		if (a[i] == b[i]) ret += '0';
		else ret += '1';
	}
	return ret;
}
void encode (int n, int x) {
	if (x == 1) {
		send(0); send(0); send(0); send(0);
	} else if (x == 2) {
		send(0); send(0); send(1); send(0);
	} else {
		send(1); send(1); send(0); send(0);
	}
}
pair <int, int> decode (int n) {
	string a = "0000", b = "1100", c = "0010";
	map <string, vector <int>> x;
	for (auto i : arr) x[pp(a, i)].push_back(1);
	for (auto i : arr) x[pp(b, i)].push_back(2);
	for (auto i : arr) x[pp(b, i)].push_back(3);
	string s; for (int i = 0; i < 4; i++) s += (char)(receive() + '0');
	if (x[s].size() == 1) {
		return {x[s].front(), x[s].front()};
	} else {
		return {x[s].front(), x[s].back()};
	}
}
/*
0000
1100
0010

*/

Compilation message (stderr)

communication.cpp: In function 'std::string pp(std::string, std::string)':
communication.cpp:15:22: error: 'x' was not declared in this scope
   15 |  for (int i = 0; i < x; i++) {
      |                      ^