#include <stdio.h>
#include <stdbool.h>
int main(int argc, char **argv) {
char c;
bool inSpace = false;
while ((c = getchar()) != EOF) {
if (c == ' ' && inSpace == false) {
putchar('\n');
inSpace = true;
} else {
if (c != ' ') {
putchar(c);
inSpace = false;
}
}
}
return 0;
}