#include <bits/stdc++.h>
using namespace std;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, const T b) {a = min(a, b); return (a == b);}
template <typename T> inline bool chmax(T& a, const T b) {a = max(a, b); return (a == b);}
const int man = (int)(1e7 + 10);
inline void cls() {}
void solve() {
cls();
int a, b, c, d;
cin >> a >> b >> c >> d;
for (int i = a; i <= b; ++i) {}
for (int i = c; i <= d; ++i) {}
cout << "DA\n";
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
// int t = 1;
#ifdef _LOCAL
system("color a");
freopen("in.txt", "r", stdin);
// cin >> t;
#endif
int t;
cin >> t;
while (t--) {
solve();
}
// for (int i = 1; i <= t; ++i) {
// cerr << "Case #" << i << ": \n";
// solve();
// cerr << "\n";
// }
return 0;
}
