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

int isValidFloat(const char *str) {
    char *endptr;
    strtof(str, &endptr);
    return *endptr == '\0';
}

int main() {
    int n;
    float arr[1001]; 
    char buffer[100];

   
    if (scanf("%d", &n) != 1 || n < 0 || n > 1000) {
        printf("Invalid input\n");
        return 0;
    }

    for (int i = 0; i < n; i++) {
        if (scanf("%s", buffer) != 1 || !isValidFloat(buffer)) {
            printf("Invalid input\n");
            return 0;
        }
        arr[i] = atof(buffer);
    }

    if (scanf("%s", buffer) != 1 || !isValidFloat(buffer)) {
        printf("Invalid input\n");
        return 0;
    }

    arr[n] = atof(buffer);
    n++;

    for (int i = 0; i < n; i++) {
        printf("%g", arr[i]);
        if (i != n - 1)
            printf(" ");
    }
    printf("\n");

    return 1;