Compilare: main.cpp: In function 'void update_dp(std::__cxx11::string)': main.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.size();i++){ ~^~~~~~~~~ main.cpp: In function 'void dijkstra()': main.cpp:69:9: warning: unused variable 'nmij' [-Wunused-variable] int nmij,mij,iant,ni; ^~~~ main.cpp:69:14: warning: unused variable 'mij' [-Wunused-variable] int nmij,mij,iant,ni; ^~~ main.cpp:69:18: warning: unused variable 'iant' [-Wunused-variable] int nmij,mij,iant,ni; ^~~~