foo.cc: In function 'void dfs(int, int)':
foo.cc:7:26: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    7 | #define REP( i , l , r ) for ( int i = l ; i <= r ; ++ i )
      |                          ^~~
foo.cc:45:1: note: in expansion of macro 'REP'
   45 | REP( i , 0 , n ) dp[ l ][ r ][ i ] = 0 ; return ;
      | ^~~
foo.cc:45:42: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   45 | REP( i , 0 , n ) dp[ l ][ r ][ i ] = 0 ; return ;
      |                                          ^~~~~~
foo.cc: In function 'int getp(int)':
foo.cc:33:1: warning: control reaches end of non-void function [-Wreturn-type]
   33 | }
      | ^

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