/in/foo.cc: In function 'void dfs(int, int)':
/in/foo.cc:31:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if (!imp[x]) return ;dfs(imp[x],y);
     ^~
/in/foo.cc:31:26: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
     if (!imp[x]) return ;dfs(imp[x],y);
                          ^~~