제출 #857522

#제출 시각아이디문제언어결과실행 시간메모리
857522chilinhxyzabc동굴 (IOI13_cave)C++17
0 / 100
7 ms348 KiB
#include <bits/stdc++.h> #include "cave.h" using namespace std; void exploreCave(int n) { int s[n], d[n]; for(int i = 0; i < n; i++) { s[i] = 0; d[i] = -1; } for(int i = 0; i < n; i++) { int curDoor = tryCombination(s); if(curDoor == -1) break; else { int l = i, r = n - 1, res; while(l <= r) { int m = (l + r) / 2; s[m] = 1 - s[m]; int door = tryCombination(s); if(curDoor == door) { r = m - 1; } else { l = m + 1; res = m; } s[m] = 1 - s[m]; } d[res] = curDoor; s[res] = 1 - s[res]; for(int j = i; j < res; j++) { s[j] = 1 - s[j]; int door = tryCombination(s); s[j] = 1 - s[j]; d[j] = door; } i = res; } } answer(s, d); }

컴파일 시 표준 에러 (stderr) 메시지

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:31:30: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized]
   31 |             for(int j = i; j < res; j++) {
      |                            ~~^~~~~
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