- #include
- using namespace std;
- typedef long long LL;
- LL gcd(LL a,LL b)
- {
- returnb? gcd(b,a%b):a;
- }
- int main()
- {
- LL T;cin>>T;
- while(T--)
- {
- LL a,b,c;
- cin>>a>>b;
- c=(a+b)/2;
- LL m=a+b+2*c,n=b+c;
- LL g=gcd(m,n);
- printf("%lld/%lld\n",n/g,m/g);
- }
- }
来源: http://www.bubuko.com/infodetail-1945272.html