Compilare: main.cpp: In function 'int solve()': main.cpp:76:1: warning: no return statement in function returning non-void [-Wreturn-type] 76 | } | ^ main.cpp: At global scope: main.cpp:77:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 77 | main() | ^~~~ main.cpp: In function 'int main()': main.cpp:79:10: warning: variable 'sol' set but not used [-Wunused-but-set-variable] 79 | auto sol=[](bool x)->string | ^~~