Compilare: main.cpp: In function 'int main()': main.cpp:64:9: warning: unused variable 's' [-Wunused-variable] int s=0,d=n+m+1; ^ main.cpp:64:13: warning: unused variable 'd' [-Wunused-variable] int s=0,d=n+m+1; ^ main.cpp: In function 'bool bfs()': main.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type] } ^