Submission #949174

#	Time	Username	Problem	Language	Result	Execution time	Memory
949174		SoSmolSten	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include "combo.h"
using namespace std::string;
string guess_sequence(int N) {
	string res = "";
	int id = 0;
	string c = "ABXY";
	int v = press("AB");
	if(v == 2) id = 0;
	else if(v == 1){
		if(press("A") == 1) id = 0;
		else id = 1;
	}else if(press("X") == 1) id = 2;
	else id = 3;
	res += c[id];
	if(N == 1) return res;
	swap(c[3], c[id]);
	for(int i = 1; i < N - 1; ++i){
		v = press(res + c[0] + c[0] + res + c[0] + c[1] + res + c[0] + c[2] + res + c[1]);
		if(v == i + 2) {
			res += c[0];
		}else if(v == i + 1){
			res += c[1];
		}else res += c[2];
	}
	if(press(res + c[0] + res + c[1]) == N) {
		if(press(res + c[0]) == N) res += c[0];
		else res += c[1];
	}else res += c[2];
	return res;
}

Compilation message (stderr)

combo.cpp:2:22: error: 'string' is not a namespace-name
    2 | using namespace std::string;
      |                      ^~~~~~
combo.cpp:3:1: error: 'string' does not name a type; did you mean 'stdin'?
    3 | string guess_sequence(int N) {
      | ^~~~~~
      | stdin