Compilare: main.cpp: In function 'long long int lol(long long int)': main.cpp:28:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(a == 4); ^~ main.cpp:29:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' return 2; ^~~~~~ main.cpp: In function 'int32_t main()': main.cpp:51:9: warning: unused variable 'cn' [-Wunused-variable] int cn = n, nr = 0; ^~