#include <iostream>
#include <vector>
 
int main() {
    unsigned n, a, b;
    std::cout << "a="; std::cin >> a;
    std::cout << "b="; std::cin >> b;
    std::cout << "n="; std::cin >> n;
    std::vector<int> v;
    while (n % 3 != 0) {
        if (a < n && n < b) {
            v.push_back(n);
        }
        std::cout << "n="; std::cin >> n;
    }
 
    std::cout << "No. of numbers from the interval " << v.size() << std::endl;
    std::cout << "The numbers from the interval:" << std::endl;
    for (std::size_t i = 0; i != v.size(); ++i) {
        std::cout << v[i] << " ";
    }
    return 0;
}
 

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MQoyMAoyCjEwMQo0CjUKNTMKNDIK

1
20
2
101
4
5
53
42