Compilare: user.cpp: In function ‘int join(int, int)’: user.cpp:60:17: warning: no return statement in function returning non-void [-Wreturn-type] far[a] = b; } ^ user.cpp: In function ‘int main()’: user.cpp:76:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int e = 0; e < edg.size(); ++e) ^ user.cpp:80:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int e = 0; e < edg.size(); ++e) ^ user.cpp:63:9: warning: unused variable ‘srcs’ [-Wunused-variable] int srcs, snks, x, y, c, s; ^ user.cpp:63:15: warning: unused variable ‘snks’ [-Wunused-variable] int srcs, snks, x, y, c, s; ^ user.cpp:63:30: warning: unused variable ‘s’ [-Wunused-variable] int srcs, snks, x, y, c, s; ^ user.cpp: In function ‘void pump(int, int)’: user.cpp:25:24: warning: ‘it’ may be used uninitialized in this function [-Wmaybe-uninitialized] gws[src] = ++it; ^