Compilare: main.cpp: In function 'void distance(int)': main.cpp:77:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < Ad[nod].size(); ++i ) ~~^~~~~~~~~~~~~~~~ main.cpp:58:26: warning: variable 'power' set but not used [-Wunused-but-set-variable] int energy, energyw, power; ^~~~~ main.cpp: In function 'void solve()': main.cpp:109:12: warning: unused variable 'di' [-Wunused-variable] int i, di, dmin = inf; ^~ main.cpp:109:16: warning: unused variable 'dmin' [-Wunused-variable] int i, di, dmin = inf; ^~~~ main.cpp:110:9: warning: unused variable 'kmin' [-Wunused-variable] int kmin; ^~~~