Compilare: main.cpp: In function 'int good(const std::vector<int>&)': main.cpp:64:9: warning: variable 'nddebug' set but not used [-Wunused-but-set-variable] 64 | int nddebug[10]; | ^~~~~~~ main.cpp:65:9: warning: variable 'sdebug' set but not used [-Wunused-but-set-variable] 65 | int sdebug[10]; | ^~~~~~ main.cpp:66:9: warning: variable 'soldebug' set but not used [-Wunused-but-set-variable] 66 | int soldebug[10]; | ^~~~~~~~ main.cpp: In function 'void back(int, std::vector<int>&, int, int, bool)': main.cpp:120:17: warning: variable 'r' set but not used [-Wunused-but-set-variable] 120 | int r[10]; | ^ main.cpp: In function 'int main()': main.cpp:149:19: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] 149 | if(!state1_sol==-1) | ^~ main.cpp:149:8: note: add parentheses around left hand side expression to silence this warning 149 | if(!state1_sol==-1) | ^~~~~~~~~~~ | ( ) main.cpp:149:19: warning: comparison of constant '-1' with boolean expression is always false [-Wbool-compare] 149 | if(!state1_sol==-1) | ~~~~~~~~~~~^~~~