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#include <iostream>
#include <vector>
#include <string.h>
using namespace std;
class Bar{
protected:
int x;
vector<long long> f;
public:
virtual void foobar() = 0;
auto setX(const int x) -> void{
f.erase(f.begin(), f.end());
this->x = x;
fib();
};
auto fib() -> void {
f.push_back(1);
f.push_back(1);
for(int i = 2; i < x; i++)
f.push_back(f.at(i-1) + f.at(i-2));
};
auto getFib() const -> void {
for(auto i : f)
cout << i << ' ';
cout << '\n';
};
auto ricerca(long long n) const -> bool {
vector<long long> f2(f);
bool s = false;
int met_div;
do {
met_div = f2.size() / 2;
if(n == f2.at(met_div)) {
s = true;
break;
}else if(n > f2.at(met_div)) {
f2.erase(f2.begin(), f2.begin()+met_div);
} else {
f2.erase(f2.begin()+met_div, f2.end());
}
if(f2.size() == 1) {
if(f.at(0) == n)
s = true;
else
break;
}
} while(!s);
return s;
};
};
class Foo : public Bar {
public:
void foobar() override {
cout << "FOOBAR!!" << endl;
}
Foo(int x) {
this->x = x;
fib();
}
};
int main(int argc, char** argv)
{
Foo foo(10);
int sx;
long long valRic;
foo.getFib();
cin >> valRic;
cout << (foo.ricerca(valRic) ? "Presente" : "Non presente") << endl;
cin >> sx;
foo.setX(sx);
foo.getFib();
cin >> valRic;
cout << (foo.ricerca(valRic) ? "Presente" : "Non presente") << endl;
foo.foobar();
return 0;
}
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