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- #include <iostream>
- #include <algorithm>
- using namespace std;
- int main()
- {
- int n;
- cin >> n;
- int niza[n];
- for(int i = 0; i < n; i++) {
- cin >> niza[i];
- }
- sort(niza, niza + n);
- int S = 0, E = n - 1;
- int res = 0;
- while(S < E) {
- while(niza[S] > 0 and S < E) {
- E--;
- niza[S]--;
- res++;
- }
- S++;
- }
- cout << res << endl;
- return 0;
- }
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