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