/in/foo.cc: In function 'int main()':
/in/foo.cc:16:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(int i=1;i<=l;i++)
   ^~~
/in/foo.cc:22:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    if(ans<r/(5*v)) ans=r/(5*v);
    ^~