diff --git "a/\354\235\264\354\247\200\354\210\230/SWEA/D2/1204.java" "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1204.java"
new file mode 100644
index 00000000..7f0b8610
--- /dev/null
+++ "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1204.java"
@@ -0,0 +1,29 @@
+import java.util.Scanner;
+
+class Solution
+{
+	public static void main(String args[]) throws Exception
+	{
+		Scanner sc = new Scanner(System.in);
+		int T = sc.nextInt();
+
+		for(int test_case = 1; test_case <= T; test_case++)
+		{
+            sc.nextInt();
+            
+            int[] scores = new int[101];
+            for(int i = 0; i < 1000; i++){
+            	scores[sc.nextInt()]++;
+            }
+            
+            int[] result = {-1, 0};
+            for(int i = 0; i < 101; i++) {
+            	if(scores[i] > result[1] || (scores[i] == result[1] && i > result[0])) {
+                    result[0] = i;
+                    result[1] = scores[i];
+                }
+            }
+            System.out.println("#" + test_case + " " + result[0]);
+		}
+	}
+}
diff --git "a/\354\235\264\354\247\200\354\210\230/SWEA/D2/12712. \355\214\214\353\246\254\355\207\264\354\271\2303.java" "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/12712. \355\214\214\353\246\254\355\207\264\354\271\2303.java"
new file mode 100644
index 00000000..85143eb7
--- /dev/null
+++ "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/12712. \355\214\214\353\246\254\355\207\264\354\271\2303.java"	
@@ -0,0 +1,51 @@
+import java.util.Scanner;
+ 
+class Solution {
+    public static void main(String args[]) throws Exception {
+        Scanner sc = new Scanner(System.in);
+        int T = sc.nextInt();
+ 
+        for(int test_case = 1; test_case <= T; test_case++) {
+            int N = sc.nextInt();
+            int M = sc.nextInt();
+             
+            int[][] flies = new int[N][N];
+            for(int i = 0; i < N; i++)
+                for(int j = 0; j < N; j++)
+                    flies[i][j] = sc.nextInt();
+             
+            int max = 0;
+            for(int i = 0; i < N; i++) {
+                for(int j = 0; j < N; j++) {
+                    int sum1 = flies[i][j];
+                    int sum2 = flies[i][j];
+                    for(int x = 1; x < M; x++) {
+                        if(j - x >= 0)
+                            sum1 += flies[i][j - x];
+                        if(j + x < N)
+                            sum1 += flies[i][j + x];
+                        if(i - x >= 0)
+                            sum1 += flies[i - x][j];
+                        if(i + x < N)
+                            sum1 += flies[i + x][j];
+                         
+                        if(i - x >= 0 && j - x >= 0)
+                            sum2 += flies[i - x][j - x];
+                        if(i + x < N && j + x < N)
+                            sum2 += flies[i + x][j + x];
+                        if(i - x >= 0 && j + x < N)
+                            sum2 += flies[i - x][j + x];
+                        if(i + x < N && j - x >= 0)
+                            sum2 += flies[i + x][j - x];
+                    }
+                     
+                    int tmp = sum1 > sum2 ? sum1 : sum2;
+                    if(max < tmp)
+                        max = tmp;
+                }
+            }
+             
+            System.out.println("#" + test_case + " " + max);
+        }
+    }
+}
diff --git "a/\354\235\264\354\247\200\354\210\230/SWEA/D2/1859. \353\260\261\353\247\214 \354\236\245\354\236\220 \355\224\204\353\241\234\354\240\235\355\212\270.java" "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1859. \353\260\261\353\247\214 \354\236\245\354\236\220 \355\224\204\353\241\234\354\240\235\355\212\270.java"
new file mode 100644
index 00000000..b4d73cea
--- /dev/null
+++ "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1859. \353\260\261\353\247\214 \354\236\245\354\236\220 \355\224\204\353\241\234\354\240\235\355\212\270.java"	
@@ -0,0 +1,35 @@
+import java.util.Scanner;
+
+class Solution
+{
+	public static void main(String args[]) throws Exception
+	{
+		Scanner sc = new Scanner(System.in);
+		int T = sc.nextInt();
+
+		for(int test_case = 1; test_case <= T; test_case++)
+		{
+			int N = sc.nextInt();
+			int[] prices = new int[N];
+			for(int i = 0; i < N; i++) {
+				prices[i] = sc.nextInt();
+			}
+			
+			int result = 0;
+			int idx = -1;
+			while(idx < N) {
+				int max = -1;
+				for(int i = idx + 1; i < prices.length; i++) {
+					if(prices[i] >= max) {
+						max = prices[i];
+						idx = i;
+					}
+				}
+				for(int i = 0; i < idx; i++) {
+					result += max - prices[i];
+				}
+			}
+            System.out.println("#" + test_case + " " + result);
+		}
+	}
+}
diff --git "a/\354\235\264\354\247\200\354\210\230/SWEA/D2/1940. \352\260\200\353\236\217! RC\354\271\264!.java" "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1940. \352\260\200\353\236\217! RC\354\271\264!.java"
new file mode 100644
index 00000000..953047ff
--- /dev/null
+++ "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1940. \352\260\200\353\236\217! RC\354\271\264!.java"	
@@ -0,0 +1,32 @@
+import java.util.Scanner;
+
+class Solution
+{
+	public static void main(String args[]) throws Exception
+	{
+		Scanner sc = new Scanner(System.in);
+		int T = sc.nextInt();
+
+		for(int test_case = 1; test_case <= T; test_case++)
+		{
+			int N = sc.nextInt();
+            int v = 0;
+            int d = 0;
+            for(int i = 0; i < N; i++){
+            	int command = sc.nextInt();
+                if(command == 0)
+                    d += v;
+                else if(command == 1) {
+                    v += sc.nextInt();
+                	d += v;
+                }
+                else {
+                    int a = sc.nextInt();
+                	v = (v - a >= 0? v - a : 0);
+                    d += v;
+                }
+            }
+            System.out.println("#" + test_case + " " + d);
+		}
+	}
+}
diff --git "a/\354\235\264\354\247\200\354\210\230/SWEA/D2/1954. \353\213\254\355\214\275\354\235\264 \354\210\253\354\236\220.java" "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1954. \353\213\254\355\214\275\354\235\264 \354\210\253\354\236\220.java"
new file mode 100644
index 00000000..2122fc70
--- /dev/null
+++ "b/\354\235\264\354\247\200\354\210\230/SWEA/D2/1954. \353\213\254\355\214\275\354\235\264 \354\210\253\354\236\220.java"	
@@ -0,0 +1,42 @@
+import java.util.Scanner;
+
+class Solution
+{
+	public static void main(String args[]) throws Exception
+	{
+		Scanner sc = new Scanner(System.in);
+		int T = sc.nextInt();
+
+		for(int test_case = 1; test_case <= T; test_case++)
+		{
+            int N = sc.nextInt();
+            int arr[][] = new int[N][N];
+            
+            int[] dx = {0, 1, 0, -1};
+            int[] dy = {1, 0, -1, 0};
+            int dirIdx = 0;
+            
+            int cnt = 1;
+            
+            int r = 0;
+            int c = 0;
+            
+            while(cnt <= N * N){
+            	if(r + dx[dirIdx] >= N || r + dx[dirIdx] < 0 || c + dy[dirIdx] >= N || c + dy[dirIdx] < 0 || arr[r + dx[dirIdx]][c + dy[dirIdx]] != 0)
+            		dirIdx = (dirIdx + 1) % 4;
+                arr[r][c] = cnt;
+                r += dx[dirIdx];
+                c += dy[dirIdx];
+                cnt++;
+            }
+            
+            System.out.println("#" + test_case);
+            for(int i = 0; i < N; i++) {
+             	for(int j = 0; j < N; j++) {
+                 	System.out.print(arr[i][j] + " ");
+                }
+                System.out.println();
+            }
+		}
+	}
+}