@[A15174768677](/space/show?uid=136599) 希望更丰富的展现？使用Markdown
by A_Đark_Horcrux @ 2018-10-07 20:16:14
@[Bilion_冰凌帅](/space/show?uid=54372) 怎么使用啊？
by 唐飒 @ 2018-10-07 20:17:31
@[A15174768677](/space/show?uid=136599) 欢迎来到洛~~咕~~!
by pascalfans @ 2018-10-07 20:17:36
@[A15174768677](/space/show?uid=136599) 欢迎来到洛沽！
by 紫妹只有17岁 @ 2018-10-07 20:18:32
@[A15174768677](/space/show?uid=136599) 欢迎来到洛沽！
by A星际穿越 @ 2018-10-07 20:19:15
[Markdown教程](https://www.luogu.org/wiki/show?name=%E5%B8%AE%E5%8A%A9%EF%BC%9Amarkdown)
by _FILARET_ @ 2018-10-07 20:19:26
谷地位再次-1
by A星际穿越 @ 2018-10-07 20:19:39
```cpp
include<stdio.h>
int main()
{
int count(int a[], int n);
printf("input\n");
int a[10],i;
for (i = 0; i < 10; i++)
{
scanf("%d", &a[i]);
}
int ans = count(a, 10); printf("%d\n", ans);
}
int count(int a[], int n)
{
int i,j, flag = 1, ans=0;
for (i = 0; i < n; i++)
{
a[i] = a[i] % 42;
}
for (i = 0; i < n; i++)
{
for (j = i+1; j < n; j++)
{
if (a[i] == -1)
{
flag = 0; break;
}
if (a[i] == a[j])
{
a[i] = a[j] = -1;
flag = 0;
break;
}
}
if (flag == 1)
{
ans++;
}
}
return ans;
```
by A_Đark_Horcrux @ 2018-10-07 20:19:50
@[A15174768677](/space/show?uid=136599)
```cpp
printf("input\n");
```
这行是为什么？
by A_Đark_Horcrux @ 2018-10-07 20:21:34
@[Bilion_冰凌帅](/space/show?uid=54372) 就是提示用户输入
by 唐飒 @ 2018-10-07 20:22:18