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- string s;
- cin >> s;
- int i = 0;
- while (s[i] == '5' && i < s.size())
- {
- i++;
- }
- if (i == s.size())
- {
- for (int j = 0; j < s.size() + 1; j++)
- {
- cout << 5;
- }
- exit(0);
- }
- if (s[i] < '5')
- {
- for (int j = 0; j < s.size(); j++)
- {
- cout << 5;
- }
- exit(0);
- }
- for (int j = 0; j < s.size() + 1; j++)
- {
- cout << 5;
- }
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