제출 #954449

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
954449		__Davit__	동굴 (IOI13_cave)	C++17	13 / 100	9 ms	568 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>

using namespace std;

namespace {


    int *subtask2(int a[]) {
        int n = sizeof(a) / sizeof(int);
        int res[n];
        for (int i = 0; i < n; i++) {
            a[i] ^= 1;
            int x = tryCombination(a);
            a[i] ^= 1;
            res[i] = x;
        }
        return res;
    }
}

void exploreCave(int N) {
    int a[N];
    for (int i = 0; i < N; i++)a[i] = 0;
//    for (int i = 0; i < N; i++)b[i] = i;
//    int x = tryCombination(a);

//    N = sizeof(a) / sizeof(int);
    int b[N];
    for (int i = 0; i < N; i++) {
        a[i] ^= 1;
        int x = tryCombination(a);
        a[i] ^= 1;
        b[i] = x;
    }
    answer(a, b);
}

컴파일 시 표준 에러 (stderr) 메시지

cave.cpp: In function 'int* {anonymous}::subtask2(int*)':
cave.cpp:10:24: warning: 'sizeof' on array function parameter 'a' will return size of 'int*' [-Wsizeof-array-argument]
   10 |         int n = sizeof(a) / sizeof(int);
      |                       ~^~
cave.cpp:9:23: note: declared here
    9 |     int *subtask2(int a[]) {
      |                   ~~~~^~~
cave.cpp:18:16: warning: address of local variable 'res' returned [-Wreturn-local-addr]
   18 |         return res;
      |                ^~~
cave.cpp:11:13: note: declared here
   11 |         int res[n];
      |             ^~~
cave.cpp: At global scope:
cave.cpp:9:10: warning: 'int* {anonymous}::subtask2(int*)' defined but not used [-Wunused-function]
    9 |     int *subtask2(int a[]) {
      |          ^~~~~~~~

• Subtask 1: 0 / 12
• Subtask 2: 13 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24