P1888 三角函数

 1 #include<iostream>
 2 #include<cstdio>
 3 #include<cstring>
 4 #include<cmath>
 5 #include<algorithm>
 6 #define gcd(int a,int b)    return b==0?a:gcd(b,a%b);
 7 #define lli long long int 
 8 using namespace std;
 9 void read(int &n)
10 {
11     char c='+';int x=0;bool flag=0;
12     while(c<'0'||c>'9')
13     {c=getchar();if(c=='-')flag=1;}
14     while(c>='0'&&c<='9')
15         x=x*10+(c-48),c=getchar();
16     flag==1?n=-x:n=x;
17 }
18 int a[10];
19 
20 int main()
21 {    
22     cin>>a[1]>>a[2]>>a[3];
23     sort(a+1,a+4);
24     printf("%d/%d",a[1]/gcd(a[1],a[3]),a[3]/gcd(a[1],a[3]));
25     return 0;
26 }