diff --git a/YIM2UL2ET/README.md b/YIM2UL2ET/README.md
index 71c5f9a..3927de4 100644
--- a/YIM2UL2ET/README.md
+++ b/YIM2UL2ET/README.md
@@ -6,6 +6,9 @@
 | 2차시 | 2024.02.15 |  그리디  | [BOJ 1263](https://www.acmicpc.net/problem/1263)  | [BOJ 1449 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/7) |
 | 3차시 | 2024.02.18 |  스택  | [BOJ 2504](https://www.acmicpc.net/problem/2504)  | [BOJ 2504 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/9) |
 | 4차시 | 2024.02.21 |  덱  | [BOJ 1021](https://www.acmicpc.net/problem/1021)  | [BOJ 1021 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/12) |
-| 5차시 | 2024.02.21 |  큐  | [BOJ 1158](https://www.acmicpc.net/problem/1158)  | [BOJ 1158 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/16) |
-| 5차시 | 2024.02.21 |  정렬  | [BOJ 1599](https://www.acmicpc.net/problem/1599)  | [BOJ 1599 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/21) |
+| 5차시 | 2024.02.24 |  큐  | [BOJ 1158](https://www.acmicpc.net/problem/1158)  | [BOJ 1158 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/16) |
+| 6차시 | 2024.02.27 |  정렬  | [BOJ 1599](https://www.acmicpc.net/problem/1599)  | [BOJ 1599 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/21) |
+| 7차시 | 2024.03.01 |  재귀  | [BOJ 2705](https://www.acmicpc.net/problem/2705)  | [BOJ 2705 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/23) |
+| 8차시 | 2024.03.04 |  재귀  | [BOJ 10994](https://www.acmicpc.net/problem/10994)  | [BOJ 10994 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/27) |
+| 9차시 | 2024.03.07 |  임의 정밀도 / 큰 수 연산 && 재귀  | [BOJ 1914](https://www.acmicpc.net/problem/1914)  | [BOJ 1914 풀이](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/29) |
 ---
diff --git "a/YIM2UL2ET/\354\236\204\354\235\230 \354\240\225\353\260\200\353\217\204, \355\201\260 \354\210\230 \354\227\260\354\202\260/9\354\260\250\354\213\234 - BOJ 1914.cpp" "b/YIM2UL2ET/\354\236\204\354\235\230 \354\240\225\353\260\200\353\217\204, \355\201\260 \354\210\230 \354\227\260\354\202\260/9\354\260\250\354\213\234 - BOJ 1914.cpp"
new file mode 100644
index 0000000..e870bff
--- /dev/null
+++ "b/YIM2UL2ET/\354\236\204\354\235\230 \354\240\225\353\260\200\353\217\204, \355\201\260 \354\210\230 \354\227\260\354\202\260/9\354\260\250\354\213\234 - BOJ 1914.cpp"	
@@ -0,0 +1,37 @@
+#include <iostream>
+
+std::string FindValue(int n)
+{
+    std::string result = "1";
+    for (int i = 0; i < n; i++) {
+        for (int j = 0; j < result.size(); j++) {
+            result[j] = (result[j] - '0') * 2 + '0';
+            if (result[j] > '9') {
+                result[j] -= 10;
+                if (j == 0) result.insert(result.begin(), '1'), j++;
+                else result[j-1]++;
+            }
+        }
+    }
+    result[result.size()-1]--;
+    return result;
+}
+
+void Hanoi(int level, int start, int between, int end)
+{
+    if (level == 1) std::cout << start << " " << end << "\n";
+    else {
+        Hanoi(level-1, start, end, between);
+        std::cout << start << " " << end << "\n";
+        Hanoi(level-1, between, start, end);
+    }
+    return;
+}
+
+int main(void) {
+    int n;
+    std::cin >> n;
+    std::cout << FindValue(n) << "\n";
+    if (!(n > 20)) Hanoi(n, 1, 2, 3);
+    return 0;
+}
\ No newline at end of file
diff --git "a/YIM2UL2ET/\354\236\254\352\267\200/7\354\260\250\354\213\234 - BOJ 2705.cpp" "b/YIM2UL2ET/\354\236\254\352\267\200/7\354\260\250\354\213\234 - BOJ 2705.cpp"
new file mode 100644
index 0000000..ec0d7bb
--- /dev/null
+++ "b/YIM2UL2ET/\354\236\254\352\267\200/7\354\260\250\354\213\234 - BOJ 2705.cpp"	
@@ -0,0 +1,23 @@
+#include <iostream>
+
+int ary[1000] = {0};
+
+int solve(int n)
+{   
+    if (ary[n-1] != 0) return ary[n-1];
+    for (int i = 0; n-i*2 > 1;) ary[n-1] += solve(++i);
+    return ++ary[n-1];
+}
+
+int main(void)
+{
+    int n, input;
+    ary[0] = 1;
+
+    std::cin >> n;
+    for (int i = 0; i < n; i++) {
+        std::cin >> input;
+        std::cout << solve(input) << std::endl;
+    }
+    return 0;   
+}
\ No newline at end of file
diff --git "a/YIM2UL2ET/\354\236\254\352\267\200/8\354\260\250\354\213\234 - BOJ 10994.cpp" "b/YIM2UL2ET/\354\236\254\352\267\200/8\354\260\250\354\213\234 - BOJ 10994.cpp"
new file mode 100644
index 0000000..8728e2e
--- /dev/null
+++ "b/YIM2UL2ET/\354\236\254\352\267\200/8\354\260\250\354\213\234 - BOJ 10994.cpp"	
@@ -0,0 +1,42 @@
+#include <iostream>
+
+void cover1(int n, int level)
+{
+    for (int i = 0; i < level; i++) std::cout << "* ";
+    for (int i = 0; i < 4*(n-level)-3; i++) std::cout << "*";
+    for (int i = 0; i < level; i++) std::cout << " *";
+    std::cout << "\n";
+}
+
+void cover2(int n, int level)
+{
+    for (int i = 0; i < level; i++) std::cout << "* ";
+    std::cout << "*";
+    for (int i = 0; i < 4*(n-level)-5; i++) std::cout << " ";
+    std::cout << "*";
+    for (int i = 0; i < level; i++) std::cout << " *";
+    std::cout << "\n";
+}
+
+void star(int n, int level)
+{
+    if (n == level+1) {
+        for (int i = 0; i < n*2-2; i++) std::cout << "* ";
+        std::cout << "*\n";
+    }
+    else {
+        cover1(n, level);
+        cover2(n, level);
+        star(n, level+1);
+        cover2(n, level);
+        cover1(n, level);
+    }
+}
+
+int main(void)
+{
+    int n;
+    std::cin >> n;
+    star(n, 0);
+    return 0;
+}
\ No newline at end of file