A - Distance

https://codeforces.com/contest/1612/submission/136435411

CodeForces/1612/A/A.cpp

@@ -0,0 +1,31 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int t, x, y, n, xx, yy;
+
+inline int d(int x1, int y1, int x2, int y2) {
+    return abs(x1 - x2) + abs(y1 - y2);
+}
+
+int main() {
+    cin >> t;
+    while (t--) {
+        bool flag = false;
+        cin >> x >> y;
+        n = x + y;
+        for (int i = 0; i * 2 <= n; i++) {
+            xx = i;
+            yy = (n >> 1) - i;
+            if ((x + y) / 2.0 == xx + yy && (x + y) / 2.0 == d(x, y, xx, yy)) {
+                cout << xx << ' ' << yy << endl;
+                flag = true;
+                break;
+            }
+        }
+        if (!flag) {
+            cout << "-1 -1" << endl;
+        }
+    }
+    return 0;
+}