1 files changed, 0 insertions, 18 deletions
diff --git a/string/rollingHash2.cpp b/string/rollingHash2.cpp
deleted file mode 100644
index f60db2e..0000000
--- a/string/rollingHash2.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-// M = 1.7e9 + 9, 1e18L + 9, 2.2e18L + 7
-struct Hash {
-	static constexpr ll M = 3e18L + 37;
-	static constexpr ll Q = 318LL << 53; // Random in [SIGMA+1, M)
-	vector<ll> pref = {0}, power = {1};
-
-	Hash(const string& s) {
-		for (auto c : s) {
-			pref.push_back((mul(pref.back(), Q) + c + M) % M);
-			power.push_back(mul(power.back(), Q));
-	}}
-
-	ll operator()(int l, int r) {
-		return (pref[r] - mul(power[r-l], pref[l]) + M) % M;
-	}
-
-	static ll mul(__int128 a, ll b) {return a * b % M;}
-};