new file mode 100644
--- /dev/null
+++ b/2017/03/app.d
@@ -0,0 +1,60 @@
+import std.stdio;
+import std.math: realabs=abs;
+import std.complex;
+import std.conv: to;
+
+auto generateSpiral(numType)(numType x) {
+  auto z = Complex!numType(0);
+  auto i = Complex!numType(0, 1);
+  auto direction = Complex!numType(1);
+  numType stepsTillTurn = 1, stepsTaken = 0;
+  bool maxedOnce = false;
+
+  auto result = [z];
+
+  for(numType steps = 1; steps < x; steps++) {
+    z += direction;
+    stepsTaken++;
+    result ~= z;
+    if(stepsTaken == stepsTillTurn) {
+      // Time to turn
+      direction *= i;
+      stepsTaken = 0;
+      if(maxedOnce) {
+        stepsTillTurn++;
+        maxedOnce = false;
+      }
+      else {
+        maxedOnce = true;
+      }
+    }
+  }
+  return result;
+}
+
+auto tallySpiral(numType)(Complex!numType[] spiral) {
+  auto tally = [numType(1)];
+
+  for(auto i = 1; i < spiral.length; i++) {
+    numType sum = 0;
+    auto z = spiral[i];
+    for(auto j = 0; j < i; j++) {
+      auto w = spiral[j];
+      if(abs(w - z) < 2) {
+        sum += tally[j];
+      }
+    }
+    tally ~= sum;
+  }
+
+  return tally;
+}
+
+void main(string[] args){
+  auto target = to!double(args[1]);
+  auto spiral = generateSpiral(target);
+  auto end = spiral[$-1];
+  writeln(realabs(end.re) + realabs(end.im));
+  auto tally = tallySpiral(spiral);
+  writeln(tally);
+}