#include <bits/stdc++.h>   using namespace std;   int main(int argc, char *argv[]) {     int n, tmp = 1, res = 1;     cin >> n;     int A[n][2];     for (int i = 0; i < n; i++) cin >> A[i][0] >> A[i][1];     for (int i = 0; i < n - 1; i++) {       if ((A[i][0] == A[i + 1][0]) && (A[i][1] == A[i + 1][1])) {         tmp++;         if (res < tmp) res = tmp;       } else         tmp = 1;     }     cout << res << endl;     return EXIT_SUCCESS;   }   