#include<bits/stdc++.h> #define int long long #define read2(a,b) read(a),read(b) #define read3(a,b,c) read2(a,b),read(c) #define read4(a,b,c,d) read3(a,b,c),read(d) #define read5(a,b,c,d,e) read4(a,b,c,d),read(e) #define read6(a,b,c,d,e,f) read5(a,b,c,d,e),read(f) using namespace std; template<typename T> void read(T &x){ x=0; bool neg=0; char c=getchar(); while(!isdigit(c)){if(c=='-')neg=1;c=getchar();} while(isdigit(c))x=(x<<3)+(x<<1)+(c^48),c=getchar(); if(neg)x=-x; } int h,m; int gcd(int x,int y){ return y?gcd(y,x%y):x; } void slv(){ read2(h,m); int ans1=(m+m-min(m,h)+1)*(min(m,h))/2,ans2=m*h; int g=gcd(ans1,ans2); cout<<ans1/g<<'/'<<ans2/g<<endl; } signed main(){ slv(); }