A. Count Down
import sys
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
n = int(input().rstrip('\n'))
for i in range(n, -1, -1):
print(i)
if __name__ == '__main__':
solve()
B. Sandwich Number
import sys
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
s = str(input().rstrip('\n'))
if len(s) == 8:
for i in range(len(s)):
if i == 0 or i == len(s) - 1:
if 65 <= ord(s[i]) <= 90:
continue
else:
print("No")
exit()
else:
if 48 <= ord(s[i]) <= 57:
continue
else:
print("No")
exit()
if 100000 <= int(s[1:-1]) <= 999999:
print("Yes")
else:
print("No")
else:
print("No")
if __name__ == '__main__':
solve()
C. Circular Playlist
import sys
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
n, t = list(map(int, input().rstrip('\n').split()))
a = list(map(int, input().rstrip('\n').split()))
t %= sum(a)
total = 0
for i in range(n):
total += a[i]
if t <= total:
print(i + 1, a[i] - total + t)
exit()
if __name__ == '__main__':
solve()