#include <stdio.h>
const int GAP = 100;
int main() {
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
int cnt = 0;
char str[2002];
char c;
int i, len;
while (scanf("%c", &c) != -1) {
str[cnt] = c;
cnt++;
if (cnt % GAP == 0) {
if (str[cnt - 1] == ' ') continue;
len = 1; // number of space will be added
while (len < GAP && str[cnt - 1 - len] != ' ')
len++;
if (len == GAP) continue;
// move len character forward, start from cnt - len
for (i = cnt - len; i < cnt; i++) {
str[i + len] = str[i];
str[i] = ' ';
}
cnt += len;
}
}
str[cnt] = 0;
printf("%s", str);
return 0;
}
