#include <iostream>
#include <vector>
using namespace std;

int main() {
    vector<int> arr;
    int num;
    while (cin >> num) {
        arr.push_back(num);
    }

    int maxLength = 1, currentLength = 1;

    for (size_t i = 1; i < arr.size(); i++) {
        if (arr[i] == arr[i - 1]) {
            currentLength++;
        } else {
            maxLength = max(maxLength, currentLength);
            currentLength = 1;
        }
    }

    maxLength = max(maxLength, currentLength);

    cout << maxLength << endl;

    return 0;
}