#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
const int N = 1e6 + 10;
int t, n, m, k, l, r, op, xx1, yy1, xx2, yy2;
int f[N];
bool flag;
struct myComplex {
    int _a, _b;
    myComplex(int a, int b): _a(a), _b(b) {};
    myComplex operator+(const myComplex&com)const {
        return myComplex(_a + com._a, _b + com._b);
    }
    void print() {
        cout << _a;
        if (_b >= 0) {
            cout << "+";
        }
        cout << _b;
        cout << "i";
        cout << "\n";
    }
};
void solve() {
    cin >> t;
    while (t--) {
        cin >> xx1 >> yy1 >> xx2 >> yy2;
        myComplex c1(xx1, yy1), c2(xx2, yy2);
        (c1 + c2).print();
    }
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    solve();
    return 0;
}