diff options
| author | mzuenni <michi.zuendorf@gmail.com> | 2022-06-27 17:19:28 +0200 |
|---|---|---|
| committer | mzuenni <michi.zuendorf@gmail.com> | 2022-06-27 17:19:28 +0200 |
| commit | 5ab8a5088b729a9953b8dff1b2a985dc8fb2098b (patch) | |
| tree | ed40d6936c0e9eee40ba62751cbf99ecddbaddc2 /math/linearCongruence.cpp | |
| parent | adabbad9c51cf7cd3874bfde8eac1fbcf84fec10 (diff) | |
updated tcr
Diffstat (limited to 'math/linearCongruence.cpp')
| -rw-r--r-- | math/linearCongruence.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/math/linearCongruence.cpp b/math/linearCongruence.cpp new file mode 100644 index 0000000..b4f172d --- /dev/null +++ b/math/linearCongruence.cpp @@ -0,0 +1,5 @@ +ll solveLinearCongruence(ll a, ll b, ll m) { + ll g = gcd(a, m); + if (b % g != 0) return -1; + return ((b / g) * multInv(a / g, m / g)) % (m / g); +}
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