1 files changed, 43 insertions, 2 deletions
diff --git a/daily/285easy/1dec.pas b/daily/285easy/1dec.pas
index 734bd0f..a2599a9 100644
--- a/daily/285easy/1dec.pas
+++ b/daily/285easy/1dec.pas
@@ -2,8 +2,49 @@
 
 var
   fi, fo: text;
-
+  n, m, i, j: byte;
+  s: string[4];
+  a: array[1 .. 4] of byte;
 
 begin
+  assign(fi, '1dec.inp');
+  reset(fi);
+  assign(fo, '1dec.out');
+  rewrite(fo);
+
   repeat
-    read(f
+    read(fi, s[1]);
+    n := ord(s[1]) - 32;
+    if n mod 3 > 0 then
+      n := n div 3 + 1
+    else
+      n := n div 3;
+
+    for i := 1 to n do
+      begin
+        read(fi, s);
+        for j := 1 to 4 do
+          a[j] := ord(s[j]) - 32;
+
+        m := a[1] * 4 + a[2] div 16;
+        if m = 0 then
+          break;
+        write(fo, chr(m));
+
+        m := a[2] mod 16 * 16 + a[3] div 4;
+        if m = 0 then
+          break;
+        write(fo, chr(m));
+
+        m := a[3] mod 4 * 64 + a[4];
+        if m = 0 then
+          break;
+        write(fo, chr(m));
+      end;
+
+    readln(fi)
+  until eof(fi);
+
+  close(fi);
+  close(fo)
+end.