1 files changed, 58 insertions, 0 deletions
diff --git a/Semestr 4/aisd/themis/FIB.cpp b/Semestr 4/aisd/themis/FIB.cpp
new file mode 100644
index 0000000..dd38c5c
--- /dev/null
+++ b/Semestr 4/aisd/themis/FIB.cpp
@@ -0,0 +1,58 @@
+#include <bits/stdc++.h>
+using namespace std;
+typedef long long ll;
+
+class matrix
+{
+public:
+  ll a, b, c, d;
+  static ll m;
+
+  matrix(ll _a = 0, ll _b = 0, ll _c = 0, ll _d = 0) : a(_a), b(_b), c(_c), d(_d) {}
+
+  matrix operator*(const matrix &M) const
+  {
+    matrix res;
+    res.a = (a * M.a + b * M.c) % m;
+    res.b = (a * M.b + b * M.d) % m;
+    res.c = (c * M.a + d * M.c) % m;
+    res.d = (c * M.b + d * M.d) % m;
+    return res;
+  }
+};
+
+ll matrix::m = 1;
+
+matrix fast_pow(matrix M, int w)
+{
+  matrix res(1, 0, 0, 1);
+  while (w)
+  {
+    if (w % 2 == 1)
+      res = res * M;
+    M = M * M;
+    w >>= 1;
+  }
+  return res;
+}
+
+void solve()
+{
+  int n, m;
+  cin >> n >> m;
+  matrix M(0, 1, 1, 1);
+  matrix::m = m;
+  cout << fast_pow(M, n + 1).a << "\n";
+}
+
+int main()
+{
+  ios_base::sync_with_stdio(false);
+  cin.tie();
+  int t;
+  cin >> t;
+  while (t--)
+  {
+    solve();
+  }
+}
+\ No newline at end of file