/in/foo.cc: In function 'int main()':
/in/foo.cc:18:29: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(flag=false&&a[i]<a[i-1]) {flag=true;break;}
                             ^
/in/foo.cc:10:15: warning: unused variable 'pos' [-Wunused-variable]
  int n,maxn=0,pos,tot;
               ^~~