私の解答
N, A, B = map(int,input().split())
X = [0] * N
Y = [0] * N
for i in range(N):
values = input().split()
X[i] = int(values[0])
Y[i] = int(values[1])
print(abs(X[A-1] - X[B-1]) + abs(Y[A-1] - Y[B-1]))
解答例
values = input().split()
N = int(values[0])
A = int(values[1])
B = int(values[2])
X = [0] * N
Y = [0] * N
for i in range(N):
values = input().split()
X[i] = int(values[0])
Y[i] = int(values[1])
print(abs(X[B - 1] - X[A - 1]) + abs(Y[B - 1] - Y[A - 1]))