#include <bits/stdc++.h>
using namespace std;
int main() {
// your code goes here
int n;
cin>>n;
vector<int>arr(n);
for(int i=0;i<n;i++){
cin>>arr[i];
}
int k;
cin>>k;
int maxi=-100;
int sum=0;
int j=0;
for(int i=0;i<n;i++){
sum+=arr[i];
while(sum>k){
sum=sum-arr[j];
j++;
}
int l=i-j+1;
maxi=max(maxi,l);
}
cout<<maxi;
return 0;
}
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