제출 #411599

#제출 시각아이디문제언어결과실행 시간메모리
411599nichke콤보 (IOI18_combo)C++14
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; int press(string p); string guess_sequence(int n) { string but = "AB"; string res = ""; if (!press(but)) but = "XY"; char ff = but[0]; if (!press(but.substr(0, 1))) ff = but[1]; but = "ABXY"; string bt = ""; for (char c : but) { if (c == ff) continue; bt += c; } res += ff; if (n <= 1) { return res; } while (res.size() < n - 1) res += bt[press(res + bt[1] + res + bt[2] + bt[0] + res + bt[2] + bt[1] + res + bt[2] + bt[2]) - res.size()]; } if (press(res + bt[0] + res + bt[1])) { if (press(res + bt[0]) > res.size()) return res + bt[0]; return res + bt[1]; } return res + bt[2]; }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:22:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |  while (res.size() < n - 1)
      |         ~~~~~~~~~~~^~~~~~~
combo.cpp: At global scope:
combo.cpp:25:2: error: expected unqualified-id before 'if'
   25 |  if (press(res + bt[0] + res + bt[1])) {
      |  ^~
combo.cpp:29:2: error: expected unqualified-id before 'return'
   29 |  return res + bt[2];
      |  ^~~~~~
combo.cpp:30:1: error: expected declaration before '}' token
   30 | }
      | ^
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:7:15: warning: control reaches end of non-void function [-Wreturn-type]
    7 |  string but = "AB";
      |               ^~~~