Submission #1160883

#	Time	Username	Problem	Language	Result	Execution time	Memory
1160883		Aza	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <string>
#include <iostream>
#define size(x) (int)x.size()
using namespace std;
int press(string p){
	cout << p << endl;
	int ret;
	cin >> ret;
	return ret;
}
string guess_sentence(int n){
	string s;
	string g = "ABXY";
	char ign = 'A';
	for(int i = 0; i < 4; i++){
		string h;
		h += g[i];
		if(press(h) == 1){
			s += h;
			ign = g[i];
			break;
		}
	}
	string gg;
	for(char ch:g){
		if(ch == ign)continue;
		gg += ch;
	}
	g = gg;
	while(size(s) != n){
		bool did = false;
		for(int i = 0; i < 2; i++){
			s += g[i];
			if(press(s) == size(s)){
				did = true;
				break;
			}
			s.pop_back();
		}
		if(!did){
			s += g[2];
		}
	}
	return s;
}
int main(){
	//ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	int n;
	cin >> n;
	cout << guess_sentence(n);
}
/*



*/

Compilation message (stderr)

/usr/bin/ld: /tmp/cczQQHXn.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/ccQso6u2.o:combo.cpp:(.text+0xc0): first defined here
/usr/bin/ld: /tmp/cczQQHXn.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccQso6u2.o:combo.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cczQQHXn.o: in function `main':
grader.cpp:(.text.startup+0x4c): undefined reference to `guess_sequence[abi:cxx11](int)'
collect2: error: ld returned 1 exit status