#include <bits/stdc++.h>
using namespace std;
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  long long n, k;
  cin >> n >> k;
  if (k >= (n * (n - 1)) / 2) {
    cout << "no solution";
  } else {
    for (long long i = 0; i < n; ++i) {
      cout << 0 << ' ' << i << '\n';
    }
  }
}
