function findFractions(k): for x from 1 to k: if x < k: y = k * x / (k - x) if y % 1 == 0: # 确保y是整数 print("1/" + k + " = 1/" + x + " + 1/" + int(y)) # 读取输入 k = int(input()) # 调用函数 findFractions(k)