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1505 - B 210
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==Rezolvare== <syntaxhighlight lang="python" line> #1505 B210 def decimal_to_binary(n): # Convertim numărul din baza 10 în baza 2 return bin(n)[2:] def rotate_left(s): # Rotim cifrele la stânga return s[1:] + s[0] def find_largest_permuted_number(n): binary = decimal_to_binary(n) largest_number = n # Generăm toate permutările circulare for _ in range(len(binary) - 1): binary = rotate_left(binary) # Convertim înapoi în baza 10 num = int(binary, 2) # Actualizăm cel mai mare număr largest_number = max(largest_number, num) return largest_number def is_valid_input(n): # Verificăm dacă numărul este nenul și se încadrează în limitele impuse return 0 < n <= 1000000000 def main(): with open("b210.in", "r") as f_in: n = int(f_in.readline().strip()) if not is_valid_input(n): with open("b210.out", "w") as f_out: f_out.write("Date invalide in fisierul de intrare.") return # Determinăm cel mai mare număr permis largest_number = find_largest_permuted_number(n) # Scriem rezultatul în fișierul de ieșire with open("b210.out", "w") as f: f.write(str(largest_number)) if __name__ == "__main__": main() </syntaxhighlight>
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