ye

.gitignore

@@ -0,0 +1,2 @@
+__pycache__
+*.pyc

251.py

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+from tqdm import tqdm
+
+L = 110_000_000
+
+v = dict()
+print("loading a's")
+for a in tqdm(range(1, L + 1)):
+    k = 8 * a**3 + 15 * a**2 + 6 * a - 1
+    v[k] = a
+
+ct = 0
+print("loading b's and c's")
+for b in tqdm(range(1, L + 1)):
+    for c in tqdm(range(1, L + 1)):
+        if b + c > L: continue
+        k = 27 * b*b * c
+        if k in v:
+            a = v[k]
+            if a + b + c > L: continue
+            # res.add((v[k], b, c))
+            ct += 1
+