哦
by __世界第一弱__ @ 2016-11-18 20:15:07
```cpp
var
a,b,c,d,i,j,k,n,m:longint;
begin
readln(a,b,c,d);
n:=c-a;
m:=d-b;
if m<0 then begin n:=n-1; m:=m+60; end;
writeln(n,' ',m);
end.
```
by 筱羽大人 @ 2016-11-22 21:20:02