#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <stdlib.h>
using namespace std;
#include <malloc.h>
int main() {
    char* a1;
    char* a2 = NULL;
    int len =1;
    a1 = (char*)malloc(sizeof(char));
    char c;
    while ((c = getchar()) != EOF) {
        if (c != ' ' and c != '\n') {
            len = len + 1;
            a2 = (char*)malloc(len * sizeof(char));
            for (int i = 0; i <= len-2; i++) {
                a2[i] = a1[i];
            }
            a2[len - 1] = c;
            free(a1);
            a1 = (char*)malloc(len * sizeof(char));
            for (int i = 0; i <= len -1; i++) {
                a1[i] = a2[i];
            }
        }
    }
    a1[len] = '\0';
    for (int i = 0; i <= len - 1; i++) {
        printf("%c ", a2[i]);
    }
}