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at3107

Untitled

Oct 23rd, 2020
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C++ 0.32 KB | None | 0 0
  1. int fun(int n)
  2.     {
  3.         int ans=0;
  4.         string s;
  5.         while(n>0)
  6.         {
  7.             s.push_back('9'-(n%10));
  8.             n/=10;
  9.         }
  10.         reverse(s.begin(),s.end());
  11.         for(int i=0;i<(int)s.size();i++)
  12.         {
  13.             ans*=10;
  14.             ans+=s[i]-'0';
  15.         }
  16.         return ans;
  17.     }
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