PAT 1058 A+B in Hogwarts

#include <cstdio>

#include <cstdlib>



using namespace std;



class Number {

public:

    int a;

    int b;

    int c;

    Number(int _a = 0, int _b = 0, int _c = 0): a(_a), b(_b), c(_c){}

    Number operator+(const Number& n) {

        Number tmp;

        tmp.a = a + n.a;

        tmp.b = tmp.a / 29;

        tmp.a = tmp.a % 29;

        

        tmp.b += b + n.b;

        tmp.c = tmp.b / 17;

        tmp.b = tmp.b % 17;

        

        tmp.c += c + n.c;

        tmp.c = tmp.c;

        return tmp;

    }

    void print() {

        printf("%d.%d.%d", c, b, a);

    }

};



int main() {

    Number n1, n2;

    scanf("%d.%d.%d", &n1.c, &n1.b, &n1.a);

    scanf("%d.%d.%d", &n2.c, &n2.b, &n2.a);



    Number n3 = n1 + n2;

    n3.print();

    return 0;

}

感觉是个坑，明明说了Galleon is an integer in [0, 10⁷]，结果tmp.c不用取模就对了，麻烦把定义说明白一些