#include <stdio.h>
#include <string.h>
int main() {
	char str[100];
	gets(str);
	int i,s, e=0, c=0;
	s = 0;
	for (i = 0; i <= strlen(str); ++i) {
		if (str[i] == ' '||str[i]=='\0') {
			++e;
			if (c == 1) {
				int j, k;
				for (j = s, k = i - 1; k > j; ++j, --k) {
					char temp = str[j];
					str[j] = str[k];
					str[k] = temp;
				}
				s = i + 1;
				c = 0;
			}
			else
				++c;
		}
	}
	s = 0;
	for (i = 0; i <= strlen(str); ++i) {
		if (str[i] == ' ' || (e % 2 == 0 && str[i] == '\0')) {
				int j, k;
				for (j = s, k = i - 1; k > j; ++j, --k) {
					char temp = str[j];
					str[j] = str[k];
					str[k] = temp;
				}
				s = i + 1;
			}
		}
	printf("%s", str);
}