/in/foo.cc: In function 'int main()':
/in/foo.cc:6:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    6 |         for(int l=1;l<=n;l++)
      |         ^~~
/in/foo.cc:8:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
    8 |                 for(int i=a;i<=b;i++){
      |                 ^~~
/in/foo.cc:16:48: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   16 |                                         if(flag=1)
      |                                            ~~~~^~
/in/foo.cc:20:32: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   20 |                         if(flag=0)
      |                            ~~~~^~