complete 29413.py

zeta_python/completed/29413.py

@@ -0,0 +1,60 @@
+import math
+from decimal import Decimal, getcontext
+
+getcontext().prec = 32
+
+
+class ДимаЗарплата:
+    TRI = Decimal(1) / Decimal(3)
+
+    def __init__(self, k: int):
+        self.k = k
+
+    def solve(self) -> str:
+        u = 1
+        minima = (Decimal(10) ** (u - 1)) ** self.TRI
+        maxima = (Decimal(10) ** (u)) ** self.TRI
+        delta = 2
+        cnt = delta * u
+        now = self.k
+        while now - cnt > 0:
+            now -= cnt
+            u += 1
+
+            if (u - 1) % 3 != 0:
+                minima = (Decimal(10) ** (u - 1)) ** self.TRI
+            else:
+                minima = Decimal(10) ** ((u - 1) // 3)
+
+            if u % 3 != 0:
+                maxima = (Decimal(10) ** u) ** self.TRI
+            else:
+                maxima = Decimal(10) ** (u // 3)
+
+            if u % 3 == 0:
+                delta = int(maxima) - math.ceil(minima)
+            elif (u - 1) % 3 == 0:
+                delta = int(maxima) - int(minima) + 1
+            else:
+                delta = int(maxima) - math.ceil(minima) + 1
+            cnt = u * delta
+
+        if u == 1:
+            return str((math.ceil(minima) + now - 1) ** 3)[0]
+        else:
+            d, m = divmod(now - 1, u)
+            return str((math.ceil(minima) + d) ** 3)[m]
+
+
+def test():
+    D_V = "".join(str(i**3) for i in range(1, 1000))
+    for i, c in enumerate(D_V):
+        solver = ДимаЗарплата(i + 1)
+        if solver.solve() != c:
+            return False
+    return True
+
+
+if __name__ == "__main__":
+    k = int(input())
+    print(ДимаЗарплата(k).solve())