#pragma once
#include <vector>
#include <limits>
class PrimeNumberGenerator {
public:
explicit PrimeNumberGenerator(int start) {
a = start;
}
int GetNextPrime() {
int64_t i = 2;
while (true) {
if (i * i > a) break;
if (a % i == 0) {
i = 2;
a++;
}
i++;
}
a++;
return a - 1;
}
private:
int64_t a;
};