题目：

代码：

w, m, n = map(int,input().split())
y = max(m,n)//w + 1
matrix = []
res = []
for i in range(y):
    temp = [j for j in range(w*i+1, w*(i+1)+1)]
    if i%2 == 0:
        matrix.append(temp)
    else:
        temp = temp[::-1]
        matrix.append(temp)
    if m in temp:
        res.append([temp.index(m),i])
    if n in temp:
        res.append([temp.index(n),i]) 
print(abs(res[0][1]-res[1][1]) + abs(res[0][0]-res[1][0]))