import java.util.ArrayList;
import java.util.Objects;

class TestFraction {
    public static void main(String[] args) {
        StaticFraction f1 = StaticFraction.getFraction(1, 2);
        //StaticFraction f2 = StaticFraction.getFraction(1, 2);
        // System.out.println(f1);
        StaticFraction.print();
    }
}

public class StaticFraction {
    final int numerator, denom;

    static ArrayList<StaticFraction> f;
    FinalFraction add = new FinalFraction(1, 1);
    private static int tos = 0;//стрелочка нужна для for each  стат методе

    StaticFraction(int a, int b) {
        int[] result = red(a, b);
        a = result[0];
        b = result[1];
        if (a * b > 0) {
            numerator = Math.abs(a);
            denom = Math.abs(b);
        } else if (a * b == 0) {
            numerator = 0;
            denom = 1;
        } else {
            numerator = -Math.abs(a);
            denom = Math.abs(b);
        }
    }

    StaticFraction(String s) {
        int a, b;
        s.trim(); //удаляем пробелы
        int d = s.indexOf('/'); //индекс слэша
        if (d < 0) {
            a = Integer.parseInt(s);
            b = 1;
            int[] result = red(a, b);
            a = result[0];
            b = result[1];
        } else {
            String s1 = s.substring(0, d);
            String s2 = s.substring(d + 1);
            a = Integer.parseInt(s1);
            b = Integer.parseInt(s2);
        }
        numerator = a;
        denom = b;
    }

    public int getDenom() {
        return denom;
    }

    public int getNumerator() {
        return numerator;
    }

    private int[] red(int a, int b) {
        int c = nod(a, b);
        int n = a / c;
        int d = b / c;
        int[] result = {n, d};
        return result;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof FinalFraction)) return false;
        FinalFraction that = (FinalFraction) o;
        return getNumerator() == that.getNum() &&
                getDenom() == that.getDen();
    }

    @Override
    public int hashCode() {
        return Objects.hash(getNumerator(), getDenom());
    }

    private int nod(int a, int b) {
        a = Math.abs(a);
        b = Math.abs(b);
        int max = Math.max(a, b);
        int nod;
        for (int i = max; i > 1; i--)
            if (a % i == 0 && b % i == 0) {
                nod = i;
                return nod;
            }
        return 1;
    }

    static StaticFraction getFraction(int a, int b) {
        if (tos == 1)
            for (int i = 0; i < f.size(); i++)
                if (f.get(i).getNumerator() == a && f.get(i).getDenom() == b) return f.get(i);
        tos = 1;
        StaticFraction frac = new StaticFraction(a, b);
        f.add(frac);
        return frac;


    }

    @Override
    public String toString() {
        return numerator +
                "/" + denom;
    }

    static void print() {
        for (int i = 0; i < f.size(); i++) {
            System.out.println(f.get(i));
        }
    }
}