/in/foo.cc: In function 'int main()':
/in/foo.cc:76:23: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
    scanf("%d",&data[i]);
                       ^
/in/foo.cc:93:34: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=]
    printf("%lld\n",ques(root,x,y));
                                  ^