#include <iostream>
class FOR {
private:
    int loop;
    int range;
    int G;
public:
    FOR(int r[3]) {
        this->loop = r[1];
        this->range = r[0];
        this->G = r[2];
    }
    bool Loop() {
        this->loop+=this->G;
        return (this->loop <= this->range);
    }
    int get() {
        return this->loop;
    }
};
int main() {
    int x[] = {10,0,1};
    FOR obj(x);
    while (obj.Loop()) {
        std::cout << obj.get();
        if (obj.get() % 2 == 0) {
            std::cout << "は偶数" << std::endl;
        }else{
            std::cout << "は奇数" << std::endl;
        }
        
    }
    return 0;
}