/in/foo.cc: In function 'bool spfa()':
/in/foo.cc:31:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(d[2*n+3]==-1e9)return 0;return 1;
  ^~
/in/foo.cc:31:29: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  if(d[2*n+3]==-1e9)return 0;return 1;
                             ^~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:56:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while(spfa())mincf();printf("%d",ans);
  ^~~~~
/in/foo.cc:56:23: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  while(spfa())mincf();printf("%d",ans);
                       ^~~~~~