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