2024-2-27-730飞行员兄弟.cpp

2024-2-27-730飞行员兄弟.cpp

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#include <iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
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 0;
}
return true;
}

int main()
{
scanf("%d",&n);
for(int i=1;i<=n;i++) scanf("%d",&h[i]);
int l=0,r=1e5;
while(r>l){
int mid=l+r>>1;
if(check(mid))
r=mid;
else l=mid+1;
}
printf("%d\n",l);
return 0;
}