Update problem admin

judge/admin/problem.py

@@ -5,7 +5,7 @@ from django.contrib import admin
 from django.db import transaction
 from django.db.models import Q, Avg, Count
 from django.db.models.aggregates import StdDev
-from django.forms import ModelForm
+from django.forms import ModelForm, TextInput
 from django.urls import reverse_lazy
 from django.utils.html import format_html
 from django.utils.translation import gettext, gettext_lazy as _, ungettext
@@ -70,6 +70,7 @@ class ProblemForm(ModelForm):
             ),
             "types": AdminSelect2MultipleWidget,
             "group": AdminSelect2Widget,
+            "memory_limit": TextInput(attrs={'size':'20'}),
         }
         if HeavyPreviewAdminPageDownWidget is not None:
             widgets["description"] = HeavyPreviewAdminPageDownWidget(

judge/migrations/0128_auto_20220620_2210.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.25 on 2022-06-20 15:10
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('judge', '0127_auto_20220616_1442'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='problem',
+            name='memory_limit',
+            field=models.PositiveIntegerField(help_text='The memory limit for this problem, in kilobytes (e.g. 256mb = 262144 kilobytes).', validators=[django.core.validators.MinValueValidator(0), django.core.validators.MaxValueValidator(1048576)], verbose_name='memory limit'),
+        ),
+    ]

judge/models/problem.py

@@ -215,7 +215,7 @@ class Problem(models.Model):
         verbose_name=_("memory limit"),
         help_text=_(
             "The memory limit for this problem, in kilobytes "
-            "(e.g. 64mb = 65536 kilobytes)."
+            "(e.g. 256mb = 262144 kilobytes)."
         ),
         validators=[
             MinValueValidator(settings.DMOJ_PROBLEM_MIN_MEMORY_LIMIT),
@@ -425,7 +425,7 @@ class Problem(models.Model):
         )
 
     def __str__(self):
-        return self.name
+        return "%s (%s)" % (self.name, self.code)
 
     def get_absolute_url(self):
         return reverse("problem_detail", args=(self.code,))