1613A.cpp

// Author:Sadman kabir
// date:3/14/2024
//-------------------------------------------------------------
#include <bits/stdc++.h>
using namespace std;
#define pb(x) push_back(x)
#define No cout << "No" << endl
#define Yes cout << "Yes" << endl
#define YES cout << "YES" << endl
#define NO cout << "NO" << endl
#define mm cout << "-1" << endl
#define nl "\n"
#define rr return
#define ll long long int
//----------------------------------------------------------------
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int t;
    cin >> t;
    while (t--)
    {
        string s1, s2;
        int a, b;
        cin >> s1 >> a;
        cin >> s2 >> b;
        while (s1[s1.size() - 1] == '0')
        {
            a++;
            s1.pop_back();
        }
        while (s2[s2.size() - 1] == '0')
        {
            b++;
            s2.pop_back();
        }
        if (s1 == s2)
        {
            if (a == b)
            {
                cout << "=" << endl;
            }
            else if (a > b)
            {
                cout << ">" << endl;
            }
            else
            {
                cout << "<" << endl;
            }
        }
        else
        {
            int x = s1.size() + a;
            int y = s2.size() + b;
            if (x == y)
            {
                if (s1 > s2)
                {
                    cout << ">" << endl;
                }
                else
                {
                    cout << "<" << endl;
                }
            }
            else if (x > y)
            {
                cout << ">" << endl;
            }
            else
            {
                cout << "<" << endl;
            }
        }
    }
}