#include<stdio.h>

void gy(int a, int b)
{
    int a1 = a, b1 = b;
    int temp;
    if(a < b)
    {
        temp = a;
        a = b;
        b = temp;
    }
    while(a - b != b)
    {
        temp = a - b;
        a = b;
        b = temp;
    }
    a1 = a1 / b;
    b1 = b1 / b;
    printf("%d %d", a1, b1);
    return;
}

void lim(int *a1, int *b1, int n)
{
    int a = 0 , b = 0;
    int a_judge = 0, b_judge = 0;
    for (int i = n - 1; a_judge == 0; i--)
    {
        if(a_judge == 0 && *(a1 + i) != 0)
        {
            a_judge = i;
            a = *(a1 + i);
        }
    }
    
    for (int i = n - 1; b_judge == 0; i--)
    {
        if(b_judge == 0 && *(b1 + i) != 0)
        {
            b_judge = i;
            b = *(b1 + i);
        }
    }

    if(a_judge > b_judge)
        printf("infty");
    else if(a_judge < b_judge)
        printf("0 1");
    else
        gy(a, b);
}

int main()
{
    int t = 0;

    scanf("%d", &t);
    for (int i = 0; i < t; i++)
    {
        int n = 0;
        scanf("%d", &n);
        n++;    //From a[0] to a[n]
        int a[n], b[n];
        for (int j = 0; j < n; j++)
            scanf("%d", &a[j]);
        for (int j = 0; j < n; j++)
            scanf("%d", &b[j]);
        lim(a, b, n);
    }

    return 0;
}