diff --git "a/4000-4999/4529 - \320\236\321\201\321\202\320\260\320\275\320\275\321\217 \321\206\320\270\321\204\321\200\320\260 \321\207\320\270\321\201\320\273\320\260 \320\244\321\226\320\261\320\276\320\275\320\260\321\207\321\207\321\226.cpp" "b/4000-4999/4529 - \320\236\321\201\321\202\320\260\320\275\320\275\321\217 \321\206\320\270\321\204\321\200\320\260 \321\207\320\270\321\201\320\273\320\260 \320\244\321\226\320\261\320\276\320\275\320\260\321\207\321\207\321\226.cpp"
new file mode 100644
index 00000000..0cf08506
--- /dev/null
+++ "b/4000-4999/4529 - \320\236\321\201\321\202\320\260\320\275\320\275\321\217 \321\206\320\270\321\204\321\200\320\260 \321\207\320\270\321\201\320\273\320\260 \320\244\321\226\320\261\320\276\320\275\320\260\321\207\321\207\321\226.cpp"	
@@ -0,0 +1,69 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+using ull = unsigned long long;
+
+const ull MODULE = 10;
+
+using mat_t = ull[2][2];
+using vec_t = ull[2];
+
+mat_t fibomat = {
+	{ 0, 1 },
+	{ 1, 1 },
+};
+
+ull mod(ull v) {
+	return v % MODULE;
+}
+
+void mulmat(mat_t a, mat_t b, mat_t &r) {
+	r[0][0] = mod(mod(a[0][0] * b[0][0]) + mod(a[0][1] * b[1][0]));
+	r[0][1] = mod(mod(a[0][0] * b[0][1]) + mod(a[0][1] * b[1][1]));
+	r[1][0] = mod(mod(a[1][0] * b[0][0]) + mod(a[1][1] * b[1][0]));
+	r[1][1] = mod(mod(a[1][0] * b[0][1]) + mod(a[1][1] * b[1][1]));
+}
+
+void mulvec(vec_t a, mat_t b, vec_t &r) {
+	r[0] = mod(mod(a[0] * b[0][0]) + mod(a[1] * b[1][0]));
+	r[1] = mod(mod(a[0] * b[0][1]) + mod(a[1] * b[1][1]));
+}
+
+void matpow(mat_t m, ull n, mat_t &r) {
+	if (n == 1) {
+		r[0][0] = m[0][0];
+		r[0][1] = m[0][1];
+		r[1][0] = m[1][0];
+		r[1][1] = m[1][1];
+	} else if (n % 2 == 1) {
+		mat_t t;
+		matpow(m, n - 1, t);
+		mulmat(m, t, r);
+	} else {
+		mat_t t;
+		matpow(m, n / 2, t);
+		mulmat(t, t, r);
+	}
+}
+
+int main() {
+	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
+
+	ull n;
+	while (cin >> n) {
+		if (n == 0) {
+			out << 1 << endl;
+		} else if (n == 1) {
+			out << 1 << endl;
+		} else {
+			vec_t start = {1, 1}, v;
+			mat_t m;
+			matpow(fibomat, n - 1, m);
+
+			mulvec(start, m, v);
+			out << v[1] << endl;
+		}
+	}
+
+	return 0;
+}
\ No newline at end of file