KöMaL 2026 C1913

Juci and Joci, exhausted, are looking back on their school assessments from the past five days. There were at most six assessments in a single day,'' Juci begins. But at least two every day,'' Joci sighs. ``And 16 in total,'' they say at the same time, their voices cracking. In how many ways could the weekly schedule of assessments have turned out? (Two cases are considered distinct if and only if there is a day when a different number of assessments occurred.)