func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     long long n, k;     cin >> n >> k;     long long r = (n * (n - 1));     r = (r >> 1);     if (r > k) {       for (long long i = 0; i < n; i++) {         cout << 0 <<     << i <<   n ;       }       return 0;     }     cout <<  no solution n ;     return 0;   }   