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levieProekti/Olymp2020/VidkritaOlimpiadaDnipraZInform_03,03,2020/minimalnechislo.py

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+vvod = input()
+chisla = []
+res = ""
+
+for i in vvod:
+    if i.isdigit():
+        chisla.append(i)
+
+for i in range(1, 10):
+    if str(i) not in chisla:
+        res = res + str(i)
+
+if len(res) == 0:
+    res = "0"
+
+print(int(res))