if(e>=1e5) return true;是为了防止爆了
题目描述
include [HTML_REMOVED]
include [HTML_REMOVED]
include [HTML_REMOVED]
using namespace std;
const int N=100010;
int n;
int h[N];
bool check(int e)
{
for(int i=1;i<=n;i++)
{
e=e*2-h[i];
if(e>=1e5) return true;
if(e<0) return false;
}
return true;
}
int main()
{
scanf(“%d”,&n);
for(int i=1;i<=n;i++)//读入建筑物高度
scanf(“%d”,&h[i]);
int l=0,r=1e5;
while(l<r)
{
int mid=l+r>>1;
if(check(mid))r=mid;
else l=mid+1;
}
printf("%d\n",r);
return 0;
}
```