#include<bits/stdc++.h>
using namespace std;
#define io std::ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define file(name) {freopen(name".INP","r",stdin);freopen(name".OUT","w",stdout);}
int main (){
    io;file("BEAUTY");
    int n,k;cin>>n>>k;
    vector<int> a(n);
    for(int i=0;i<n;i++){
        cin>>a[i];
    }
    int l=0,r=0, mac=0,sum=0;
    while(r<n){
        sum+=a[r];
        while(sum>k*(r-l+1)&&l<=r){sum-=a[l];l++ ; ;}
        if(sum==k*(r-l+1)&&r-l+1>mac){mac=r-l+1;}
    r++;
    }
    cout<<mac;
return 0;}
 

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