Concepts2
⚙️AlgorithmAdvanced
Convolution Applications
Convolution turns local pairwise combinations (like matching characters or adding two dice) into a single fast transform–multiply–inverse pipeline.
#convolution#fft#ntt+12
⚙️AlgorithmAdvanced
Sum over Subsets (SOS) DP
Sum over Subsets (SOS) DP lets you compute F[mask] = sum of A[submask] over all submasks in O(n 2^n) instead of O(3^n).
#sos dp#subset zeta transform#mobius inversion+11