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class Solution {
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 public:
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  bool isPalindrome(int x) {
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    if (x < 0) {
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      return false;
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    }
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    long long reversed = 0;
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    long long temp = x;
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    while (temp != 0) {
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      int digit = temp % 10;
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      reversed = reversed * 10 + digit;
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      temp /= 10;
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    }
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    return (reversed == x);
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  }
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};