Which rope is used more? I'm not sure! Because although it is two ropes with the same length, the length of the rope is uncertain.

Suppose the length of the rope is one meter,

1 root uses 1/4 steps, and the second root uses 1/4 steps.

When a= 1m, use as many ropes as possible;

When a< 1m,1/4 > A/4 # 1 root is used more;

When a> is at 1m, the second root of 1/4 < A/4 is used more.