/in/foo.cc: In function 'int main()':
/in/foo.cc:39:25: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'long int*' [-Wformat=]
  scanf("%lld %lld",&n,&m);
                         ^
/in/foo.cc:39:25: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'long int*' [-Wformat=]