#include <bits/stdc++.h>

using namespace std;

long long a[1000001],b,i,n,k,b1,c1;

int main()
{
    while(cin >> k){
    if(a==0)break;
    b++;
    a[b]=k;
}
b1=1;
c1=1;
for(i=2;i<b;i++){
    if(a[i] == a[i-1])b1++;
    else b1==1;
    if(b1>c1)c1=b1;}
cout << c1;

 return 0;
}