/in/foo.cc: In function 'int bl(int, int)':
/in/foo.cc:9:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=x;i>=1;i--)
  ^~~
/in/foo.cc:12:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   maxn=max(maxn,b[x][y]);
   ^~~~
/in/foo.cc:13:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:25:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=1;i<=n;i++)
  ^~~
/in/foo.cc:29:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    printf("%d",maxn);
    ^~~~~~