Compilare: main.cpp: In function 'void Dijkstra(int, long long int*, int*)': main.cpp:86:26: warning: integer overflow in expression [-Woverflow] dist[i]=(1LL<<63)-1; ~~~~~~~~~^~ main.cpp:92:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[nod].size();j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:147:20: warning: integer overflow in expression [-Woverflow] ll mn=(1LL<<63)-1; ~~~~~~~~~^~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:16:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^