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Feb 25th, 2020
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  1. #include <iostream>
  2. #include <algorithm>
  3. using namespace std;
  4. int fr[101],v[101],n,i;
  5. int main()
  6. {
  7. cin>>n;
  8. for(i=1;i<=n;i++)
  9. {
  10. cin>>v[i];
  11. fr[v[i]]++;
  12. }
  13. for(i=1;i<1000000000;i++)
  14. {
  15. if(fr[i]==0) {cout<<i;break;}
  16. }
  17. return 0;
  18. }
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