90求助#10超时了

#include<iostream>
#include<cmath>
using namespace std;
int main(){
	long long int a[200005],b[200005],s = 0;
	int n,m = 0;
	cin>>n;
	for(int i = 0;i < n;i++){
		cin>>a[i];
		long long t = a[i];
		while(t-1){
			t = sqrt(t/2+1);
			b[i]++;
		}
		m = m>b[i]?m:b[i];
	}
	for(int i = m;i > 0;i--){
		for(int j = 0;j < n;j++){
			if(b[j] == i){
				if(a[j] != a[j+1])s++;
				b[j]--;
				a[j] = sqrt(a[j]/2+1);
			}
		}
	}
	cout<<s; 
	return 0;
}