func_code_string: #include <bits/stdc++.h>   using namespace std;   int32_t main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     long long n_Cases = 1;     for (long long case_i = 1; case_i <= n_Cases; case_i++) {       long long up, down;       cin >> up >> down;       long long n = up + down + 1;       for (long long i = 1; i <= up; i++) cout << i <<    ;       cout << n <<    ;       for (long long j = n - 1; j >= n - down; j--) cout << j <<    ;       cout <<   n ;     }     return 0;   }   