some programs!

cs101/dh_20260909_11_count_digits_init.py

@@ -0,0 +1,17 @@
+def get_count_digits_init(n: int, d: int) -> int:
+    return str(n).count(str(d))
+
+
+MAX_N = 10001
+count_digits_init = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0] for _ in range(MAX_N)]
+
+if __name__ == '__main__':
+    for i in range(1, MAX_N):
+        for d in range(10):
+            count_digits_init[i][d] = get_count_digits_init(i, d) + count_digits_init[i - 1][d]
+    # with open('dh_20260909_11_count_digits_init.out', 'w') as f:
+    #     f.write(str(count_digits_init).replace(" ", "").replace("]", "}").replace("[", "{"))
+
+    n, d = map(int, input().split())
+    print(count_digits_init[n][d])
+