PBCDIV - Phép chia hết
Tác giả: ladpro98
Ngôn ngữ: Pascal
program pbcdiv;
uses math;
const fi='';
var a,b,m,n,p:int64;
t,i:longint;
inp:text;
function calc(i:longint):int64;
var x,y:int64;
begin
if a mod i = 0 then x:=a else
x:=i-(a mod i)+a;
if b mod i =0 then y:=b else
y:=b - (b mod i);
exit((y-x) div i +1);
end;
begin
assign(inp,fi);
reset(inp);
readln(inp,t);
for i:=1 to t do
begin
readln(inp,a,b);
m:=calc(60);
n:=calc(12);
p:=calc(30);
writeln(n+p-m-m);
end;
close(inp);
end.