Compilare: main.cpp:9:26: warning: integer overflow in expression [-Woverflow] const int oo = (1 << 31) - 1; ~~~~~~~~~~^~~ main.cpp: In function 'void dij(int)': main.cpp:42:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[poz].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:67:9: warning: unused variable 'maxg' [-Wunused-variable] int maxg = 0; ^~~~