提交记录 6281 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
lixiao189	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C++	307 B

提交时间	评测时间
2018-10-05 15:08:58	2020-08-01 00:41:32

代码

int binary_search(const unsigned *a, int n, unsigned x) {
  unsigned int l = 0, r = n - 1;
  unsigned int mid;
  while (l <= r) {
    cout << l << " " << r << endl;
    mid = (l + r) >> 1;
    if (a[mid] == x) break;
    if (a[mid] > x) r = mid - 1;
    if (a[mid] < x) l = mid + 1;
  }
  return mid + 1;
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/ae462c20d34c11ea899e00163e04388b/contestant.cpp: In function ‘int binary_search(const unsigned int*, int, unsigned int)’:
jp_data/tasks/ae462c20d34c11ea899e00163e04388b/contestant.cpp:5:5: error: ‘cout’ was not declared in this scope
    5 |     cout << l << " " << r << endl;
      |     ^~~~
jp_data/tasks/ae462c20d34c11ea899e00163e04388b/contestant.cpp:5:30: error: ‘endl’ was not declared in this scope
    5 |     cout << l << " " << r << endl;
      |                              ^~~~