提交记录 639 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
wxh	1003. 测测你的二分查找	Compile Error	0	0 ns	0 KB	C	277 B

提交时间	评测时间
2018-06-20 15:07:32	2020-07-31 20:41:09

代码

int binary_search(const register unsigned *a, register int n, register unsigned x)
{
unsigned *l=(unsigned*)a,*r=(unsigned*)a+n,mid;
while(l+1!=r){
mid=(*(unsigned*)&l+*(unsigned*)&r)>>1;
*(unsigned**)&mid<=x?l=*(unsigned**)&mid:(r=*(unsigned**)&mid);
};
return l-a;
}
main(){}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/19f0d41ad32b11ea899e00163e04388b/contestant.c: In function ‘binary_search’:
jp_data/tasks/19f0d41ad32b11ea899e00163e04388b/contestant.c:6:18: warning: comparison between pointer and integer
    6 | *(unsigned**)&mid<=x?l=*(unsigned**)&mid:(r=*(unsigned**)&mid);
      |                  ^~
jp_data/tasks/19f0d41ad32b11ea899e00163e04388b/contestant.c: At top level:
jp_data/tasks/19f0d41ad32b11ea899e00163e04388b/contestant.c:10:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
   10 | main(){}
      | ^~~~
/usr/bin/ld: jp_data/tasks/19f0d41ad32b11ea899e00163e04388b/lib.o: in function `main':
lib.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccP0PXRx.o:contestant.c:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status