/in/foo.cc: In function 'int dijkstra(int)':
/in/foo.cc:14:22: warning: 'memset' used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args]
  memset(e,sizeof(e),0);
                      ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:38:22: warning: 'memset' used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args]
  memset(c,sizeof(c),0);
                      ^
/in/foo.cc:72:23: warning: 'memset' used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args]
   memset(f,sizeof(f),0);
                       ^
/in/foo.cc: In function 'int dijkstra(int)':
/in/foo.cc:34:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^