func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long k, d;     cin >> k >> d;     if (d == 0) {       if (k == 1)         cout << 0 << endl;       else         cout <<  No solution  << endl;     } else {       cout << d;       for (int i = 0; i < k - 1; i++) cout <<  0 ;     }     return 0;   }   