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- #include <iostream>
- #include <algorithm>
- using namespace std;
- int fr[101],v[101],n,i;
- int main()
- {
- cin>>n;
- for(i=1;i<=n;i++)
- {
- cin>>v[i];
- fr[v[i]]++;
- }
- for(i=1;i<1000000000;i++)
- {
- if(fr[i]==0) {cout<<i;break;}
- }
- return 0;
- }
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