A. First Player
import sys
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
n = int(input().rstrip('\n'))
al = []
sl = []
for i in range(n):
s, a = list(map(str, str(input().rstrip('\n')).split()))
al.append(int(a))
sl.append(s)
st = al.index(min(al))
for i in range(n):
print(sl[(i+st) % n])
if __name__ == '__main__':
solve()
B. Subscribers
import sys
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
n = list(str(input().rstrip('\n')))
for i in range(3, len(n)):
n[i] = "0"
print("".join(n))
if __name__ == '__main__':
solve()
C. Virus
import sys
import collections
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
n, d = list(map(int, input().rstrip('\n').split()))
xy = [list(map(int, input().rstrip('\n').split())) for _ in range(n)]
dq = collections.deque([0])
fq = collections.defaultdict(int)
fq[0]
while len(dq):
t = dq.popleft()
for i in range(n):
if i != t:
u = pow(pow(xy[t][0] - xy[i][0], 2) + pow(xy[t][1] - xy[i][1], 2), 0.5)
if u <= d:
if i not in fq:
dq.append(i)
fq[i]
for i in range(n):
if i in fq:
print("Yes")
else:
print("No")
if __name__ == '__main__':
solve()
D. A Piece of Cake
import collections
import sys
import bisect
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
w, h = list(map(int, input().rstrip('\n').split()))
n = int(input().rstrip('\n'))
pq = [list(map(int, input().rstrip('\n').split())) for _ in range(n)]
a = int(input().rstrip('\n'))
al = list(map(int, input().rstrip('\n').split()))
b = int(input().rstrip('\n'))
bl = list(map(int, input().rstrip('\n').split()))
d = collections.defaultdict(int)
for i in range(n):
p, q = pq[i]
a_pos = bisect.bisect_left(al, p)
b_pos = bisect.bisect_left(bl, q)
d[a_pos, b_pos] += 1
mx = 0
mn = pow(10, 30)
for k, v in d.items():
mx = max(mx, v)
mn = min(mn, v)
mn = 0 if len(d) != (a + 1) * (b + 1) else mn
print(mn, mx)
if __name__ == '__main__':
solve()
E. Good Graph
import sys
import collections
class AlgUnionFind():
def __init__(self, n):
self.n = n
self.parents = [-1] * n
def find(self, x):
if self.parents[x] < 0:
return x
else:
self.parents[x] = self.find(self.parents[x])
return self.parents[x]
def union(self, x, y):
x = self.find(x)
y = self.find(y)
if x == y:
return
if self.parents[x] > self.parents[y]:
x, y = y, x
self.parents[x] += self.parents[y]
self.parents[y] = x
def size(self, x):
return -self.parents[self.find(x)]
def same(self, x, y):
return self.find(x) == self.find(y)
def members(self, x):
root = self.find(x)
return [i for i in range(self.n) if self.find(i) == root]
def roots(self):
return [i for i, x in enumerate(self.parents) if x < 0]
def group_count(self):
return len(self.roots())
def all_group_members(self):
return {r: self.members(r) for r in self.roots()}
def __str__(self):
return '\n'.join('{}: {}'.format(r, self.members(r)) for r in self.roots())
def solve():
input = sys.stdin.readline
mod = 10 ** 9 + 7
n, m = list(map(int, input().rstrip('\n').split()))
uf = AlgUnionFind(n)
for i in range(m):
v1, v2 = list(map(int, input().rstrip('\n').split()))
uf.union(v1-1, v2-1)
k = int(input().rstrip('\n'))
d = collections.defaultdict(int)
for i in range(k):
x, y = list(map(int, input().rstrip('\n').split()))
x, y = uf.find(x-1), uf.find(y-1)
if x > y:
x, y = y, x
d[x, y]
q = int(input().rstrip('\n'))
for i in range(q):
p, q = list(map(int, input().rstrip('\n').split()))
p, q = uf.find(p-1), uf.find(q-1)
if p > q:
p, q = q, p
if (p, q) in d:
print("No")
else:
print("Yes")
if __name__ == '__main__':
print(pow(3, 2023) * pow(7, 604))
solve()