/in/foo.cc: In function 'int main()':
/in/foo.cc:23:43: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
  for(int i=1; i<=n; i++)scanf("%lld",&s[i]),x[i].l=0;
                                           ^
/in/foo.cc:51:14: warning: variable 'ok' set but not used [-Wunused-but-set-variable]
      int s=0,ok=0;
              ^~