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