diff options
| author | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 22:05:24 +0100 |
|---|---|---|
| committer | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 22:05:24 +0100 |
| commit | ed2cdb7ff56664d2447301802e574c9289ca4e3f (patch) | |
| tree | f0e99bb18e9861a3dc6a1c65ace6c9024f5aeb40 /content/math/matrixPower.cpp | |
| parent | 3fe8ee352845741d97a76e2ed6a390cb1481d755 (diff) | |
cosmetic changes
Diffstat (limited to 'content/math/matrixPower.cpp')
| -rw-r--r-- | content/math/matrixPower.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/content/math/matrixPower.cpp b/content/math/matrixPower.cpp index 0729c15..d80dac6 100644 --- a/content/math/matrixPower.cpp +++ b/content/math/matrixPower.cpp @@ -1,14 +1,14 @@ vector<mat> pows; void precalc(mat m) { - pows = {mat(ssize(m.m), 1), m}; - for (int i = 1; i < 60; i++) pows.push_back(pows[i] * pows[i]); + pows = {m}; + for (int i = 0; i < 60; i++) pows.push_back(pows[i] * pows[i]); } auto calc(ll b, vector<ll> v) { - for (ll i = 1; b > 0; i++) { + for (ll i = 0; b > 0; i++) { if (b & 1) v = pows[i] * v; - b /= 2; + b >>= 1; } return v; } |
