제출 #84825

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
84825		SirCeness	콤보 (IOI18_combo)	C++14	5 / 100	1 ms	276 KiB

combo

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

using namespace std;

string guess_sequence(int N) {
	
	string head;
	string str;
	str = "AB";
	if (press(str)){
		str = "A";
		if (press(str)){
			head = "A";
		} else head = "B";
	} else {
		str = "X";
		if (press(str)){
			head = "X";
		} else head = "Y";
	}
	
	char a, b, c;
	if (head[0] == 'A'){
		a = 'B';
		b = 'X';
		c = 'Y';
	} else if (head[0] == 'B'){
		a = 'A';
		b = 'X';
		c = 'Y';
	} else if (head[0] == 'X'){
		a = 'B';
		b = 'A';
		c = 'Y';
	} else if (head[0] == 'Y'){
		a = 'B';
		b = 'X';
		c = 'A';
	}
	
	for (int i = 1; i < N-1; i++){
		str = "";
		str += head + a + a;
		str += head + a + b;
		str += head + a + c;
		str += head + b;
		
		int coins = press(str);
		if (coins == head.size()+2) head += a;
		else if (coins == head.size()+1) head += b;
		else if (coins == head.size()) head += c;
		
	}
	
	str = "";
	str += head + a;
	str += head + b;
	
	if (press(str) == head.size()){
		head += c;
	} else {
		str = head + a;
		if (press(str) == head.size()) head += b;
		else head += a;
	}
	
	return head;
}

/*
	string p = "";
	for (int i = 0; i < 4 * N; ++i) {
		p += 'A';
	}
	int coins = press(p);
	string S = "";
	for (int i = 0; i < N; ++i) {
		S += 'A';
	}
	return S;
*/

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:50:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |   if (coins == head.size()+2) head += a;
      |       ~~~~~~^~~~~~~~~~~~~~~~
combo.cpp:51:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |   else if (coins == head.size()+1) head += b;
      |            ~~~~~~^~~~~~~~~~~~~~~~
combo.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |   else if (coins == head.size()) head += c;
      |            ~~~~~~^~~~~~~~~~~~~~
combo.cpp:60:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |  if (press(str) == head.size()){
      |      ~~~~~~~~~~~^~~~~~~~~~~~~~
combo.cpp:64:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |   if (press(str) == head.size()) head += b;
      |       ~~~~~~~~~~~^~~~~~~~~~~~~~
combo.cpp:46:21: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
   46 |   str += head + a + c;
      |                     ^
combo.cpp:45:21: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
   45 |   str += head + a + b;
      |                     ^

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