#include <bits/stdc++.h>
using namespace std;
int main() {
  long long 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;
    }
  }
}
