Compilare: main.cpp: In function 'bool laser(nod, nod, int)': main.cpp:22:13: warning: unused variable 'mi' [-Wunused-variable] int mi=min(s.y,t.y),mx=max(s.y,t.y); ^~ main.cpp:22:29: warning: unused variable 'mx' [-Wunused-variable] int mi=min(s.y,t.y),mx=max(s.y,t.y); ^~ main.cpp: In function 'int mintime(nod, int)': main.cpp:125:1: warning: control reaches end of non-void function [-Wreturn-type] } ^