diff --git a/LibreOJ/3737/sample/food1.ans b/LibreOJ/3737/sample/food1.ans
new file mode 100644
index 00000000..307c0f34
--- /dev/null
+++ b/LibreOJ/3737/sample/food1.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:06b798b43f2524eac11febeb1e4ec540d83c12803c61058f483233f07e7521ba
+size 6
diff --git a/LibreOJ/3737/sample/food1.in b/LibreOJ/3737/sample/food1.in
new file mode 100644
index 00000000..01c3c026
--- /dev/null
+++ b/LibreOJ/3737/sample/food1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:81d6bfcac7a7dbfee11b86401bbf11a0e5be2b4c414609b412edacc8433a6a5a
+size 32
diff --git a/LibreOJ/3737/sample/food2.ans b/LibreOJ/3737/sample/food2.ans
new file mode 100644
index 00000000..f3f2b937
--- /dev/null
+++ b/LibreOJ/3737/sample/food2.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b1786c57a306da10cc92ba2ff8a36db870e647324bcf662cc6bdddeaa59325c8
+size 8
diff --git a/LibreOJ/3737/sample/food2.in b/LibreOJ/3737/sample/food2.in
new file mode 100644
index 00000000..c6ee599b
--- /dev/null
+++ b/LibreOJ/3737/sample/food2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:739a37f11caf6c3239d459c5e04b4a3c909af0a24ad30cc5ed766e374581a8a9
+size 78
diff --git a/LibreOJ/3737/sample/food3.ans b/LibreOJ/3737/sample/food3.ans
new file mode 100644
index 00000000..4f8838ee
--- /dev/null
+++ b/LibreOJ/3737/sample/food3.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8c2c19cd6d192079065b0cb12d70885e8440f52bd067c23d6bd06342df24e8d4
+size 10
diff --git a/LibreOJ/3737/sample/food3.in b/LibreOJ/3737/sample/food3.in
new file mode 100644
index 00000000..941734ae
--- /dev/null
+++ b/LibreOJ/3737/sample/food3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d40777cf4412c7202107a59df7ff38732a3ac0919bffd7b7e27731259fdaf9f3
+size 163
diff --git a/LibreOJ/3737/sample/food4.ans b/LibreOJ/3737/sample/food4.ans
new file mode 100644
index 00000000..574b601c
--- /dev/null
+++ b/LibreOJ/3737/sample/food4.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:25f3643b932772aa023d96583f80d325bda0275fbd934cd97ac1559477e2c42c
+size 10
diff --git a/LibreOJ/3737/sample/food4.in b/LibreOJ/3737/sample/food4.in
new file mode 100644
index 00000000..dd248cea
--- /dev/null
+++ b/LibreOJ/3737/sample/food4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bea3301cc94d7b51cdd8190676259cfa357345d7667f79c4e4b6c02749f244b2
+size 19088
diff --git a/LibreOJ/3737/sample/food5.ans b/LibreOJ/3737/sample/food5.ans
new file mode 100644
index 00000000..f9e8c1ea
--- /dev/null
+++ b/LibreOJ/3737/sample/food5.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f5fd1b59cbea6d5e203bc4980368aff8d6a0d59ff92628dd5c312fd95ef733db
+size 10
diff --git a/LibreOJ/3737/sample/food5.in b/LibreOJ/3737/sample/food5.in
new file mode 100644
index 00000000..8850a443
--- /dev/null
+++ b/LibreOJ/3737/sample/food5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c827d01b17daedf6743d86f5ef96263a7266152e192f1e95456361eb8aac606f
+size 4444485
diff --git a/LibreOJ/3737/sample/food6.ans b/LibreOJ/3737/sample/food6.ans
new file mode 100644
index 00000000..5dd30b61
--- /dev/null
+++ b/LibreOJ/3737/sample/food6.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9459e8078b7022714b6da4e69efd2e4883a94f9e580874198362984b57f4612c
+size 10
diff --git a/LibreOJ/3737/sample/food6.in b/LibreOJ/3737/sample/food6.in
new file mode 100644
index 00000000..3de6714a
--- /dev/null
+++ b/LibreOJ/3737/sample/food6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9fb258a6bf0a65c440b862dab4593ffee0e1ad2d53dbbc3e12f1e978ff9243ad
+size 6888988
diff --git a/LibreOJ/3737/sample/food7.ans b/LibreOJ/3737/sample/food7.ans
new file mode 100644
index 00000000..d3ea5992
--- /dev/null
+++ b/LibreOJ/3737/sample/food7.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f9c7e04a5239e06e10d5da5ad3abf4e7426cbf6d2e8fc5e2dab9517bb34020c9
+size 10
diff --git a/LibreOJ/3737/sample/food7.in b/LibreOJ/3737/sample/food7.in
new file mode 100644
index 00000000..d72172b8
--- /dev/null
+++ b/LibreOJ/3737/sample/food7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bc6e5fa55140c5cc922393618ff545017e68116ecc92c9303af0f7a58b1f1ad5
+size 6815703
diff --git a/LibreOJ/3737/sample/food8.ans b/LibreOJ/3737/sample/food8.ans
new file mode 100644
index 00000000..31ce723b
--- /dev/null
+++ b/LibreOJ/3737/sample/food8.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7eae1fb98c5155fbdecae52ca1aaab4009808a90dfb74531062cf0ae21c9042a
+size 9
diff --git a/LibreOJ/3737/sample/food8.in b/LibreOJ/3737/sample/food8.in
new file mode 100644
index 00000000..419bca84
--- /dev/null
+++ b/LibreOJ/3737/sample/food8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c2f279d76e29bb317be7b4f96794dbb37202162adc60f0dbde69806d754e6365
+size 5581235
diff --git a/LibreOJ/3737/sample/food9.ans b/LibreOJ/3737/sample/food9.ans
new file mode 100644
index 00000000..5de5e42f
--- /dev/null
+++ b/LibreOJ/3737/sample/food9.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:38b28010f6926b4a6fab67a4b11eea9dcfbb3010e09b3c25f3cb359874a64e26
+size 10
diff --git a/LibreOJ/3737/sample/food9.in b/LibreOJ/3737/sample/food9.in
new file mode 100644
index 00000000..7a05c19b
--- /dev/null
+++ b/LibreOJ/3737/sample/food9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a56258d9c95d5c08f62b7a4a3b4f646a5b7c6fea221190100a8c9db11bb5421d
+size 6062920