More parentheses

2 files changed, 44 insertions, 10 deletions

diff --git a/others/other/spiral.pas b/others/other/spiral.pas
index 3f8fc57..819b9b2 100644
--- a/others/other/spiral.pas
+++ b/others/other/spiral.pas
@@ -1,4 +1,4 @@
-uses sysutils;
+uses strutils, sysutils;
 
 const
   direction: array[0..3, 0..1] of int8 = ((0, 1), (1, 0), (0, -1), (-1, 0));
@@ -21,13 +21,6 @@ function mt(x, y: int16): boolean;
     mt := true
   end;
 
-function rjust(i: int32; len: int8): string;
-  begin
-    rjust := inttostr(i);
-    while length(rjust) < len do
-      rjust := ' ' + rjust
-  end;
-
 begin
   assign(f, 'SPIRAL.INP');
   reset(f);
@@ -63,8 +56,8 @@ begin
   for x := 0 to m - 1 do
     begin
       for y := 0 to n - 2 do
-        write(f, rjust(a[x][y], d), ' ');
-      writeln(f, rjust(a[x][n - 1], d))
+        write(f, padleft(inttostr(a[x][y]), d), ' ');
+      writeln(f, padleft(inttostr(a[x][n - 1]), d))
     end;
   close(f)
 end.
diff --git a/others/volume1/037.pas b/others/volume1/037.pas
new file mode 100644
index 0000000..d51e0d3
--- /dev/null
+++ b/others/volume1/037.pas
@@ -0,0 +1,41 @@
+var
+  s: ansistring;
+
+
+function bracket(
+  s: ansistring;
+  l, h: integer
+): integer;
+
+  var
+    i, tmp: integer;
+
+  begin
+    if l > h then
+      exit(0);
+    bracket := -1;
+    repeat
+      tmp := 0;
+      for i := l to h do
+        begin
+          if s[i] = '(' then
+            dec(tmp)
+          else
+            inc(tmp);
+          if tmp = 0 then
+            begin
+              tmp := succ(bracket(s, succ(l), pred(i)));
+              if tmp > bracket then
+                bracket := tmp;
+              l := succ(i);
+              break
+            end
+          end;
+    until l > h;
+  end;
+
+
+begin
+  readln(s);
+  writeln(bracket(s, 1, length(s)))
+end.