diff --git a/algorithmic/problems/23/config.yaml b/algorithmic/problems/23/config.yaml
index aa1524657..088a0d6bd 100644
--- a/algorithmic/problems/23/config.yaml
+++ b/algorithmic/problems/23/config.yaml
@@ -7,4 +7,4 @@ checker: check.cpp
 cheker_type: testlib
 subtasks:
   - score: 100
-    n_cases: 3
\ No newline at end of file
+    n_cases: 1
\ No newline at end of file
diff --git a/algorithmic/problems/23/testdata/1.ans b/algorithmic/problems/23/testdata/1.ans
index 0b1304df7..e69de29bb 100644
--- a/algorithmic/problems/23/testdata/1.ans
+++ b/algorithmic/problems/23/testdata/1.ans
@@ -1,48 +0,0 @@
-S=XY
-aX=Xa
-bX=Xb
-cX=Xc
-X=ZP
-PA=dp
-PB=ep
-PC=fp
-pa=aP
-pb=bP
-pc=cP
-p=(return)0
-aA=Aa
-bA=Ab
-cA=Ac
-aB=Ba
-bB=Bb
-cB=Bc
-aC=Ca
-bC=Cb
-cC=Cc
-Ya=AY
-Yb=BY
-Yc=CY
-P=
-Z=T1
-1da=ad1
-1eb=be1
-1fc=cf1
-1a=(return)1
-1b=(return)1
-1c=(return)1
-1Y=(return)1
-1=0
-0da=ad0
-0db=bd0
-0dc=cd0
-0ea=ae0
-0eb=be0
-0ec=ce0
-0fa=af0
-0fb=bf0
-0fc=cf0
-0=
-Ta=Z
-Tb=Z
-Tc=Z
-T=(return)0
diff --git a/algorithmic/problems/23/testdata/1.in b/algorithmic/problems/23/testdata/1.in
index 573541ac9..510905fa1 100644
--- a/algorithmic/problems/23/testdata/1.in
+++ b/algorithmic/problems/23/testdata/1.in
@@ -1 +1 @@
-0
+220941104
diff --git a/algorithmic/problems/23/testdata/2.ans b/algorithmic/problems/23/testdata/2.ans
deleted file mode 100644
index 0b1304df7..000000000
--- a/algorithmic/problems/23/testdata/2.ans
+++ /dev/null
@@ -1,48 +0,0 @@
-S=XY
-aX=Xa
-bX=Xb
-cX=Xc
-X=ZP
-PA=dp
-PB=ep
-PC=fp
-pa=aP
-pb=bP
-pc=cP
-p=(return)0
-aA=Aa
-bA=Ab
-cA=Ac
-aB=Ba
-bB=Bb
-cB=Bc
-aC=Ca
-bC=Cb
-cC=Cc
-Ya=AY
-Yb=BY
-Yc=CY
-P=
-Z=T1
-1da=ad1
-1eb=be1
-1fc=cf1
-1a=(return)1
-1b=(return)1
-1c=(return)1
-1Y=(return)1
-1=0
-0da=ad0
-0db=bd0
-0dc=cd0
-0ea=ae0
-0eb=be0
-0ec=ce0
-0fa=af0
-0fb=bf0
-0fc=cf0
-0=
-Ta=Z
-Tb=Z
-Tc=Z
-T=(return)0
diff --git a/algorithmic/problems/23/testdata/2.in b/algorithmic/problems/23/testdata/2.in
deleted file mode 100644
index 29d6383b5..000000000
--- a/algorithmic/problems/23/testdata/2.in
+++ /dev/null
@@ -1 +0,0 @@
-100
diff --git a/algorithmic/problems/23/testdata/3.ans b/algorithmic/problems/23/testdata/3.ans
deleted file mode 100644
index 0b1304df7..000000000
--- a/algorithmic/problems/23/testdata/3.ans
+++ /dev/null
@@ -1,48 +0,0 @@
-S=XY
-aX=Xa
-bX=Xb
-cX=Xc
-X=ZP
-PA=dp
-PB=ep
-PC=fp
-pa=aP
-pb=bP
-pc=cP
-p=(return)0
-aA=Aa
-bA=Ab
-cA=Ac
-aB=Ba
-bB=Bb
-cB=Bc
-aC=Ca
-bC=Cb
-cC=Cc
-Ya=AY
-Yb=BY
-Yc=CY
-P=
-Z=T1
-1da=ad1
-1eb=be1
-1fc=cf1
-1a=(return)1
-1b=(return)1
-1c=(return)1
-1Y=(return)1
-1=0
-0da=ad0
-0db=bd0
-0dc=cd0
-0ea=ae0
-0eb=be0
-0ec=ce0
-0fa=af0
-0fb=bf0
-0fc=cf0
-0=
-Ta=Z
-Tb=Z
-Tc=Z
-T=(return)0
diff --git a/algorithmic/problems/23/testdata/3.in b/algorithmic/problems/23/testdata/3.in
deleted file mode 100644
index 08839f6bb..000000000
--- a/algorithmic/problems/23/testdata/3.in
+++ /dev/null
@@ -1 +0,0 @@
-200