#include <bits/stdc++.h>
using namespace std;
int main() {
  long n, k;
  cin >> n >> k;
  if (k >= n * (n - 1) / 2) {
    cout << "no solution";
    return 0;
  }
  for (long i = 0; i < n; i++) cout << "0 " << i << endl;
  return 0;
}
