#include <vector>
#include <bitset>
#include <iostream>
 
using namespace std;
 
const int N = 1024;
 
int GetRank(vector<bitset<N>> matrix) {
  const int n = matrix.size();
  int r = 0;
  vector<bool> used(n);
 
  for (int col = 0; col < n; ++col) {
    int pivot = -1;
    for (int row = 0; row < n; ++row) {
      if (!used[row] && matrix[row][col]) {
        pivot = row; break;
      }
    }
 
    if (pivot == -1) { continue; }
    used[pivot] = true;
    ++r;
 
    for (int r = 0; r < n; ++r) {
      if (r == pivot) { continue; }
      if (matrix[r][col]) {
        matrix[r] ^= matrix[pivot];
      }
    }
  }
  return r;
}
 
int main() {
  int n=450;
 
  srand(time(NULL));
 
  for (int i = 0; i < 100; ++i) {
    int m = n + i;
    vector<bitset<N>> matrix(m);
    for (int i = 0; i < m; ++i) {
      for (int j = 0; j < m; ++j) {
        matrix[i][j] = rand() % 2;
      }
    }
 
    cout << m << " "<< GetRank(matrix) << "\n";
  }
}
 

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