/in/foo.cc: In function 'void buildTree()':
/in/foo.cc:23:30: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("%d", &nodes[L + i].x);
                              ^
/in/foo.cc:25:30: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("%d", &nodes[L + i].y);
                              ^