HDU 1713 相遇周期(水)

题目链接

水题,不解释。

 1 #include <iostream>
 2 #include <cstdio>
 3 #include <cstring>
 4 #include <cstdlib>
 5 #include <map>
 6 #include <queue>
 7 #define ll __int64
 8 using namespace std;
 9 ll gcd(ll a,ll b)
10 {
11     return b == 0?a:gcd(b,a%b);
12 }
13 int main()
14 {
15     int t;
16     ll a,b,c,d,gc,gd;
17     scanf("%d",&t);
18     while(t--)
19     {
20         scanf("%I64d/%I64d%I64d/%I64d",&a,&b,&c,&d);
21         gc = b*d/gcd(b,d);
22         gd = (a*gc/b)*(c*gc/d)/gcd(a*gc/b,c*gc/d);
23         if(gd % gc == 0)
24         {
25             printf("%I64d\n",gd/gc);
26         }
27         else
28         {
29             printf("%I64d/%I64d\n",gd/gcd(gd,gc),gc/gcd(gd,gc));
30         }
31     }
32     return 0;
33 }
posted @ 2012-10-12 09:48  Naix_x  阅读(205)  评论(0编辑  收藏  举报