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# input | |
a = input() # str | |
a = int(input()) # int | |
a = list(input().split()) # list of str | |
a = list(map(int, input().split())) # list of int | |
n, m = list(map(int, input().split())) # pair of int | |
# output | |
print(a) # str, int | |
print(a, b) # multiple | |
print(*a) # spread list | |
# math | |
a ** b # power | |
# str / list | |
a = "ab" | |
b = "cd" | |
a + b # "abcd" | |
a * 3 # "ababab" | |
a.count("a") # 1 | |
a = "abcd" | |
a[1:3] # "bc" | |
# str | |
a[1] = "a" # error, immutable | |
# list | |
a.append(1) | |
a.pop() | |
a * 3 # DO NOT USE, this is shallow copy | |
# ntuple | |
a = (1, 2, 3) | |
a[1] = 5 # error, immutable | |
# condition | |
0 <= a <= 10 | |
a and b | |
a or b | |
not a | |
# immutable sequence | |
range(10) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] | |
range(1, 11) # [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] | |
range(0, 30, 5) # [0, 5, 10, 15, 20, 25] | |
range(0, 10, 3) # [0, 3, 6, 9] | |
range(0, -10, -1) # [0, -1, -2, -3, -4, -5, -6, -7, -8, -9] | |
range(0) # [] | |
range(1, 0) # [] | |
# 隣接リストで表現した無向グラフ | |
graph: list[list[int]] = [] | |
for _ in range(n): | |
graph.append([]) | |
for _ in range(m): | |
u, v = map(int, input().split()) | |
# 必要に応じて0-indexedにする | |
# u -= 1 | |
# v -= 1 | |
graph[u].append(v) | |
graph[v].append(u) |
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