제출 #835535

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
835535		KemalK	Combo (IOI18_combo)	C++17	컴파일 에러	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;
string guess_sequence(int n) {
  string s = "";
  string cur = "ABXY";
  if (press(s + "AB")){
    if (press(s + "A")){
      s += "A";
    }
    else{
      s += "B";
    }
  }
  else{
    if (press(s + "X")){
      s += "X";
    }
    else{
      s += "Y";
    }
  }
  string rem = "";
  for (int i = 0; i < 4; i++){
    if (s[0] != cur[i]){
      rem += cur[i];
    }
  }
  int cnt = 1;
  if (n == 1){
    return s;
  }
  for (int i = 1; i < n - 1; i++){
    string p = s + rem[0];
    for (int j = 0; j < 3; j++){
        p += s + rem[1] + rem[j];
    }
    int point = press(p);
    if (point == cnt + 1){
      s += rem[0];
    }
    else if (point == cnt + 2){
      s += rem[1];
    }
    else{
      s += rem[2];
    }
    cnt++;
  }
  assert(s.size() == n - 1);
  while(s.size() != n)
    if (press(s + rem[0]) == cnt + 1){
      s += rem[0];
    }
    else if (press(s + rem[1]) == cnt + 1){
      s += rem[1];
    }
    else{
      s += rem[2];
    }
  }
  return s;
}

컴파일 시 표준 에러 (stderr) 메시지

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from combo.cpp:1:
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:50:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |   assert(s.size() == n - 1);
      |          ~~~~~~~~~^~~~~~~~
combo.cpp:51:18: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   51 |   while(s.size() != n)
      |         ~~~~~~~~~^~~~
combo.cpp: At global scope:
combo.cpp:62:3: error: expected unqualified-id before 'return'
   62 |   return s;
      |   ^~~~~~
combo.cpp:63:1: error: expected declaration before '}' token
   63 | }
      | ^
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:6:16: warning: control reaches end of non-void function [-Wreturn-type]
    6 |   string cur = "ABXY";
      |                ^~~~~~