/in/foo.cc: In function 'int main()':
/in/foo.cc:61:24: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
  scanf("%lld%lld",&n,&k);
                        ^
/in/foo.cc:61:24: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'int*' [-Wformat=]
/in/foo.cc:63:25: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
   scanf("%lld%lld",&x,&y);
                         ^
/in/foo.cc:63:25: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'int*' [-Wformat=]
/in/foo.cc:66:51: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=]
  for(int i=1;i<=k;i++)scanf("%lld%lld",&u[i],&v[i]);
                                                   ^
/in/foo.cc:66:51: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'int*' [-Wformat=]