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- #include <iostream>
- using namespace std;
- int f(int n)
- {
- if (n <= 0)return 0;
- else return n+f(n-3);
- }
- int main()
- {
- int n;
- cout << "Unesi n: ";
- cin >> n;
- while (n%3!=0)
- {
- n--;
- }
- cout << "Suma brojeva djelivih sa 3 od 1 do n = " << f(n);
- system("pause >nul");
- return 0;
- }
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