Compilare: main.cpp: In function 'bool Bf()': main.cpp:71:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[u].size(); ++i ) ~~^~~~~~~~~~~~~~ main.cpp:51:8: warning: unused variable 'ap' [-Wunused-variable] int ap[NMAX] = { 0 }; ^~ main.cpp:62:8: warning: unused variable 'mzg' [-Wunused-variable] int mzg = 0; ^~~ main.cpp: In function 'void Do()': main.cpp:99:7: warning: unused variable 'op' [-Wunused-variable] int op = 0; ^~ main.cpp: In function 'bool Bf()': main.cpp:54:10: warning: iteration 359 invokes undefined behavior [-Waggressive-loop-optimizations] d[i] = INF; ~~~~~^~~~~ main.cpp:53:22: note: within this loop for( int i = 1; i <= NMAX; ++i ) ~~^~~~~~~