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0951 - Cifre7
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==Rezolvare== <syntaxhighlight lang="python" line="1" start="1"> def verificare_restrictii(nr_n, nr_k, nr_p): # functia de verificare a datelor de intrare if 17 <= nr_n <= 100 and 0 <= nr_k <= 9 and 1 <= nr_p <= 2000000000: return True else: return False def sir_numere(nr_n, nr_k, nr_p): sir = [1, 1, 2, 4, 7, 3, 4, 4, 1, 9] while len(sir) < max(nr_n, nr_p): ultim_cifra = sir[-1] % 10 penultim_cifra = sir[-2] % 10 antepenultim_cifra = sir[-3] % 10 nou_cifra = (ultim_cifra + penultim_cifra + antepenultim_cifra) % 10 sir.append(nou_cifra) nr_aparitii_k = sir[:n].count(nr_k) al_p_lea_termen = sir[p-1] return nr_aparitii_k, al_p_lea_termen if __name__ == "__main__": try: n = int(input("Introduceti numarul n: ")) k = int(input("Introduceti numarul k: ")) p = int(input("Introduceti numarul p: ")) if verificare_restrictii(n, k, p): # verificam datele de intrare print("Datele de intrare corespund restrictiilor impuse.") aparitii_k, p_lea_termen = sir_numere(n, k, p) print(aparitii_k) print(p_lea_termen) else: print("Datele de intrare nu corespund restrictiilor impuse.") # ne asteptam la 2 tipuri de erori din cauza datelor de intrare, le tratam corespunzator except ValueError: print("Datele de intrare nu corespund restrictiilor impuse.") except IndexError: print("Datele de intrare nu corespund restrictiilor impuse.") </syntaxhighlight>
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