---

#ifndef DATA_IO_H
#define DATA_IO_H

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

void input(double *data, int n);
void output(double *data, int n);

#endif




#include "data_io.h"

void input(double *data, int n) {
    for (int i = 0; i < n; i++) {
        scanf("%lf", &data[i]);
    }
}

void output(double *data, int n) {
    for (int i = 0; i < n; i++) {
        printf("%.2f", data[i]);
        if (i < n - 1) printf(" ");
    }
    printf("\n");
}