378. Missax __exclusive__

To get to the bottom of the mystery, we tried to identify the source of 378 Missax. Unfortunately, our efforts yielded limited results:

The versatility of the 378. Missax makes it useful across various fields: 378. Missax

The branch that achieves this maximum also updates start correctly (either keep previous start if we extend, or set start=i if we restart). Thus Invariant 1 and Invariant 3 hold for index (i). To get to the bottom of the mystery,