제출 #115537

#제출 시각아이디문제언어결과실행 시간메모리
115537suzy콤보 (IOI18_combo)C++17
0 / 100
23 ms288 KiB
#include <iostream> #include <string> #include "combo.h" using namespace std; string guess_sequence(int n) { string s; char c[3]; int k; if(press("A")) s="A"; else if(press("B")) s="B"; else if(press("X")) s="X"; else s="Y"; if(s[0]!='A') c[k++]='A'; if(s[0]!='B') c[k++]='B'; if(s[0]!='X') c[k++]='X'; if(s[0]!='Y') c[k++]='Y'; for(int i=0;i<n-1;i++) s+=c[0]; int pre=press(s); for(int i=pre;i<n;i++) { s[i]=c[1]; int cur=press(s); if(pre>cur) s[i]=c[0]; else if(pre<cur) { s[i]=c[1]; pre++; } else { s[i]=c[2]; pre++; } } return s; }

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:14:19: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
   14 |  if(s[0]!='A') c[k++]='A';
      |                  ~^~
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