li = input()
word_start = False
for i in li:
if i == "," or i == "?" or i == "!" or i == ".":
word_start = True
print(i, end="")
elif i == " ":
word_start = True
continue
else:
if word_start:
print(" " + i, end="")
word_start = False
else:
print(i, end="")
1490A - Dense Array | 1650B - DIV + MOD |
1549B - Gregor and the Pawn Game | 553A - Kyoya and Colored Balls |
1364A - XXXXX | 1499B - Binary Removals |
1569C - Jury Meeting | 108A - Palindromic Times |
46A - Ball Game | 114A - Cifera |
776A - A Serial Killer | 25B - Phone numbers |
1633C - Kill the Monster | 1611A - Make Even |
1030B - Vasya and Cornfield | 1631A - Min Max Swap |
1296B - Food Buying | 133A - HQ9+ |
1650D - Twist the Permutation | 1209A - Paint the Numbers |
1234A - Equalize Prices Again | 1613A - Long Comparison |
1624B - Make AP | 660B - Seating On Bus |
405A - Gravity Flip | 499B - Lecture |
709A - Juicer | 1358C - Celex Update |
1466B - Last minute enhancements | 450B - Jzzhu and Sequences |