Submission #349164

#	Time	Username	Problem	Language	Result	Execution time	Memory
349164		zggf	Combo (IOI18_combo)	C++14	0 / 100	1 ms	200 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>

using namespace std;

string guess_sequence(int N) {

	char firstLetter;
	if(press("X")) firstLetter = 'X';
	else if(press("Y")) firstLetter = 'Y';
	else if(press("A")) firstLetter = 'A';
	else if(press("B")) firstLetter = 'B';

	string wyn = "";
	wyn.push_back(firstLetter);
	for(int i = 1; i < N-1; i++){
		if(firstLetter=='A'){
			int tmp = press(wyn+"X"+wyn+"YX"+wyn+"YB"+wyn+"YY");
			if(tmp==wyn.size()){
				wyn.push_back('B');	
			}else if(tmp==wyn.size()+1){
				wyn.push_back('X');	
			}else wyn.push_back('Y');
		}
		if(firstLetter=='B'){
			int tmp = press(wyn+"X"+wyn+"YX"+wyn+"YA"+wyn+"YY");
			if(tmp==wyn.size()){
				wyn.push_back('A');	
			}else if(tmp==wyn.size()+1){
				wyn.push_back('X');	
			}else wyn.push_back('Y');
		}
		if(firstLetter=='X'){
			int tmp = press(wyn+"B"+wyn+"YB"+wyn+"YA"+wyn+"YY");
			if(tmp==wyn.size()){
				wyn.push_back('A');	
			}else if(tmp==wyn.size()+1){
				wyn.push_back('B');	
			}else wyn.push_back('Y');
		}
		if(firstLetter=='Y'){
			int tmp = press(wyn+"B"+wyn+"XB"+wyn+"XA"+wyn+"XX");
			if(tmp==wyn.size()){
				wyn.push_back('A');	
			}else if(tmp==wyn.size()+1){
				wyn.push_back('B');	
			}else wyn.push_back('X');
		}
	}

	char lastLetter;
	if(firstLetter!='X'&&press(wyn+"X")) lastLetter = 'X';
	else if(firstLetter!='Y'&&press(wyn+"Y")) lastLetter = 'Y';
	else if(firstLetter!='A'&&press(wyn+"A")) lastLetter = 'A';
	else if(firstLetter!='B'&&press(wyn+"B")) lastLetter = 'B';
	wyn.push_back(lastLetter);
	return wyn;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:19:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |    if(tmp==wyn.size()){
      |       ~~~^~~~~~~~~~~~
combo.cpp:21:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |    }else if(tmp==wyn.size()+1){
      |             ~~~^~~~~~~~~~~~~~
combo.cpp:27:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |    if(tmp==wyn.size()){
      |       ~~~^~~~~~~~~~~~
combo.cpp:29:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |    }else if(tmp==wyn.size()+1){
      |             ~~~^~~~~~~~~~~~~~
combo.cpp:35:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |    if(tmp==wyn.size()){
      |       ~~~^~~~~~~~~~~~
combo.cpp:37:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |    }else if(tmp==wyn.size()+1){
      |             ~~~^~~~~~~~~~~~~~
combo.cpp:43:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |    if(tmp==wyn.size()){
      |       ~~~^~~~~~~~~~~~
combo.cpp:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |    }else if(tmp==wyn.size()+1){
      |             ~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95