Apply the readout assignment only after leakage has removed its lost shots. In
this pinned ledger, 64 retained zero shots plus 16 retained one shots make the
80-shot input to assignment, which predicts 52 zero reads and 28 one reads; real
assignment checks need calibration matrices, threshold choices, drift tracking,
and counting uncertainty.
The assignment matrix acts on retained computational shots, not leaked shots. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Assignment uses retained computational shots
The retained computational total is 64 plus 16, or 80 shots.
64+16=80
The retained ledger predicts observed reads
Assignment turns the retained ledger into 52 zero reads and 28 one reads.