/in/foo.cc: In function 'int main()':
/in/foo.cc:40:82: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'long long int' [-Wformat=]
    printf("%ld\n",getsum(x2,y2)-getsum(x1-1,y2)-getsum(x2,y1-1)+getsum(x1-1,y1-1));
                                                                                  ^