foo.cc: In function ‘void dfs(int, int, int, int)’:
foo.cc:12:9: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   12 |         if(k!=1)dfs(a+1,a,c-b,a);
      |         ^~
foo.cc:13:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   13 |                 dfs(a+1,b*10+a,c,k);
      |                 ^~~