Compilare: main.cpp:83:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 83 | main() | ^~~~ main.cpp: In function 'int main()': main.cpp:85:10: warning: variable 'sol' set but not used [-Wunused-but-set-variable] 85 | auto sol=[](bool x)->string | ^~~ main.cpp: In function 'int solve()': main.cpp:49:42: warning: control reaches end of non-void function [-Wreturn-type] 49 | vector<vector<int>>a(n,vector<int>(m)),rez(n,vector<int>(m,2e9)); | ^