/in/foo.cc: In function 'int main()':
/in/foo.cc:21:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(l=1;l+a[l]<=r;l++)
     ^~~
/in/foo.cc:25:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  r=l-1;
  ^