제출 #196890

#제출 시각아이디문제언어결과실행 시간메모리
196890Juney콤보 (IOI18_combo)C++14
100 / 100
47 ms612 KiB
#include "combo.h" #include <bits/stdc++.h> using namespace std; char find_first() { int ret = press("AB"); if(ret == 0) { if(press("X") == 1) return 'X'; return 'Y'; } if(press("A") == 1) return 'A'; return 'B'; } string guess_sequence(int N) { string ans; char A = 'A', B = 'B', X = 'X', Y = 'Y'; char f = find_first(); if(f == B) swap(A, B); else if(f == X) swap(A, X); else if(f == Y) swap(A, Y); ans += f; if(N == 1) return ans; for(int i=1; i<N-1; i++) { string tmp = ans + X + ans + Y + B + ans + Y + X + ans + Y + Y; int cnt = press(tmp); if(cnt == ans.size()) ans += B; else if(cnt == ans.size() + 1) ans += X; else ans += Y; } int cnt = press(ans + X + ans + Y); if(cnt == N) { if(press(ans + X) == N) return ans + X; return ans + Y; } return ans + B; }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
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(cnt == ans.size()) ans += B;
      |      ~~~~^~~~~~~~~~~~~
combo.cpp:28:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   else if(cnt == ans.size() + 1) ans += X;
      |           ~~~~^~~~~~~~~~~~~~~~~
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