Submission #1141086

#	Time	Username	Problem	Language	Result	Execution time	Memory
1141086		b00legen	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

string ans;

int press(string p) {
	cout << p << endl;
	int res;
	cin >> res;
	return res;
}

string guess_sequence(int N) {
	string ans;
	//A B X Y
	string var;
	int prev = 0;
	for (int cur = 0; cur < N; cur++) {
		if (ans.size() == 0) {
			if (press("A"))
			ans += "A";
			else if (press("B"))
			ans += "B";
			else if (press("X"))
			ans += "X";
			else
			ans += "Y";
			for (int i = 0; i < 4; i++) {
				if (i == 0 && ans == "A")
				continue;
				if (i == 1 && ans == "B")
				continue;
				if (i == 2 && ans == "X")
				continue;
				if (i == 3 && ans == "Y")
				continue;
				if (i == 0)
				var += "A";
				else if (i == 1)
				var += "B";
				else if (i == 2)
				var += "X";
				else
				var += "Y";
			}
			prev = 1;
		} else {
			for (int i = 0; i < 2; i++) {
				int res = press(ans + var[i]);
				if (res > prev) {
					prev = res;
					ans += var[i];
					break;
				}
			}
			if (prev == cur) {
				ans += var[2];
				prev++;
			}
		}
	}
	return ans;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cccSlfkB.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/ccyMtYh5.o:combo.cpp:(.text+0x0): first defined here
collect2: error: ld returned 1 exit status