二分当 $l = 0,r = 1$ 时，$mid = 0$ 会出现 $len$ 为 $0$ 的情况。C++ 除数为 $0$ 会RE。
by liuruiqing @ 2024-04-19 18:32:41
```cpp
#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e5 + 50;
int n,k,a[maxn];
bool check(int x){
int cnt = 0;
for (int i = 1; i <= n; i++) {
cnt += a[i] / x;
if (cnt >= k) return true;
}
return false;
}
int bs(){
int l = 0,r = 1e8 + 1,mid;
while (l + 1 < r) {
mid = (l + r) / 2;
if (check(mid)) l = mid;
else r = mid;
}
return l;
}
int main(){
scanf("%d%d",&n,&k);
for (int i = 1; i <= n; i++) scanf("%d",&a[i]);
printf("%d",bs());
return 0;
}
```
我的代码。
@[ingzzc](/user/1139034)
by liuruiqing @ 2024-04-19 18:33:27
@[liuruiqing](/user/1118614)
谢谢
by ingzzc @ 2024-04-19 18:36:41