#include <stdio.h>
#include <stdlib.h>
#include <math.h>

typedef struct {bool s; unsigned long long n; unsigned long long d;} rational;

rational convert_int(int);

unsigned int to_exptype(unsigned int);

bool is_greater(rational,rational);

rational maximum(rational,rational);

rational sum(rational,rational);

rational difference(rational,rational);

rational product(rational,rational);

rational ratio(rational,rational);

rational absolute(rational);

rational power(rational,unsigned int);


double to_double(rational);

bool to_string(char*,rational r);