/in/foo.cc: In function 'int lca(int, int)':
/in/foo.cc:75:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if (x == y) return x; return fa[x][0];
     ^~
/in/foo.cc:75:27: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
     if (x == y) return x; return fa[x][0];
                           ^~~~~~