solution

JavaSolutions/src/com/gitproject/Beecrowd1063_uri.java

@@ -0,0 +1,63 @@
+package com.gitproject;
+
+import java.util.ArrayList;
+import java.util.Scanner;
+import java.util.Stack;
+
+public class Beecrowd1063_uri {
+    public static void main(String[] args)
+    {
+        Scanner s = new Scanner(System.in);
+        int n = s.nextInt();
+        while(n != 0)
+        {
+            Stack<Character> train= new Stack<>();
+
+            ArrayList<Character> in = new ArrayList<>();
+            ArrayList<Character> res = new ArrayList<>();
+            for(int i=0;i<n;i++)
+            {
+                in.add(s.next().charAt(0));
+            }
+            for(int i=0;i<n;i++)
+            {
+                res.add(s.next().charAt(0));
+            }
+            int t = 0;
+            for(int i=0;i<n;i++)
+            {
+
+                train.push(in.get(i));
+                System.out.print("I");
+
+                while (train.size() > 0 && res.get(t) == train.peek()) //coz we want combo same as res
+                {
+                    train.pop();
+                    System.out.print("R");
+                    t++;
+                }
+            }
+
+            if (train.size() != 0)
+                System.out.println(" Impossible");
+
+            n = s.nextInt();
+        }
+    }
+}
+/*
+Input goes as:
+--bottom to top in stack/LIFO --
+
+a
+d
+t
+e
+
+Output comes out as:
+--top to bottom--
+d
+a
+t
+e
+ */

JavaSolutions/src/com/gitproject/Beecrowd3084_uri.java

@@ -0,0 +1,42 @@
+package com.gitproject;
+
+import java.util.Scanner;
+
+public class Beecrowd3084_uri {
+    public static void main(String[] args) {
+        Scanner s = new Scanner(System.in);
+
+
+        while (s.hasNext()) {
+            String input = s.nextLine();
+            String[] list = input.split(" ");
+
+            int x = Integer.parseInt(list[0]);
+            int y = Integer.parseInt(list[1]);
+
+            if (x== 0 && y==0) {
+                System.out.println("00:00");
+            }
+            else {
+                x /= 30;
+                y /= 6;
+                if (x < 10 && y >= 10) {
+                    System.out.printf("0%d:%d\n", x, y);
+                }
+                else if (y < 10 && x >= 10) {
+                    System.out.printf("%d:0%d\n", x, y);
+                }
+                else if (y < 10) {
+                    System.out.printf("0%d:0%d\n", x, y);
+                }
+                else
+                    System.out.printf("%d:%d\n", x,y);
+            }
+
+        }
+    }
+    }
+
+
+
+