Submission #863062

#	Time	Username	Problem	Language	Result	Execution time	Memory
863062		maks007	Combo (IOI18_combo)	C++14	30 / 100	19 ms	1716 KiB

combo

#include "combo.h"
#include "bits/stdc++.h"
//#include "grader.cpp"

using namespace std;

string guess_sequence(int n) {
	string str = "", abxy;
	str += 'A';
	if(press(str) == 1) goto end;
	str.pop_back();
	str += 'B';
	if(press(str) == 1) goto end;
	str.pop_back();
	str += 'X';
	if(press(str) == 1) goto end;
	str.pop_back();
	str += 'Y';
	end:;
	if(str.size() == n) return str;
	if(str[0] == 'X') abxy = "ABY";
	else if(str[0] == 'A') abxy = "BXY";
	else if(str[0] == 'Y') abxy = "ABX";
	else abxy = "AXY";
	while(1) {
		for(int i = 0; i < abxy.size() - 1; i ++) {
			str += abxy[i];
			if(press(str) == str.size()) goto end2;
			str.pop_back();
		}
		str += abxy.back();
		end2:;
		if(str.size() == n) return str;
	}
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:20:16: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |  if(str.size() == n) return str;
      |     ~~~~~~~~~~~^~~~
combo.cpp:26:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |   for(int i = 0; i < abxy.size() - 1; i ++) {
      |                  ~~^~~~~~~~~~~~~~~~~
combo.cpp:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |    if(press(str) == str.size()) goto end2;
      |       ~~~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:33:17: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |   if(str.size() == n) return str;
      |      ~~~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95