Compilare: main.cpp: In function 'int solve()': main.cpp:81:1: warning: no return statement in function returning non-void [-Wreturn-type] 81 | } | ^ main.cpp: At global scope: main.cpp:82:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 82 | main() | ^~~~ main.cpp: In function 'int main()': main.cpp:84:10: warning: variable 'sol' set but not used [-Wunused-but-set-variable] 84 | auto sol=[](bool x)->string | ^~~