diff --git a/algorithmic/problems/213/chk.cc b/algorithmic/problems/213/chk.cc
index 1b0450d30..fb69361bb 100644
--- a/algorithmic/problems/213/chk.cc
+++ b/algorithmic/problems/213/chk.cc
@@ -59,7 +59,7 @@ int main(int argc,char* argv[])
 		root=merge(root,newnode(b[i]));
 	while(tot--){
 		int u,v,x1,x2,x3,x4,x5;
-		x=ouf.readInt(); y=x+m-1; z=ouf.readInt();
+		x=ouf.readInt(); y=ouf.readInt(); z=ouf.readInt();
 		if(x>y) swap(x,y);
 		if(y-x+1!=m || x<=0 || y>n || (z!=0 && z!=1))
 			quitf(_wa,"Your answer is not legal");
diff --git a/algorithmic/problems/213/config.yaml b/algorithmic/problems/213/config.yaml
index eb050889e..1bdf34e0b 100644
--- a/algorithmic/problems/213/config.yaml
+++ b/algorithmic/problems/213/config.yaml
@@ -5,7 +5,7 @@ type: default
 checker: chk.cc
 
 # Time and memory limits (for submit answer problems, these may not be strictly enforced)
-time: 2s
+time: 5s
 memory: 512m
 
 # The subtasks section
diff --git a/algorithmic/problems/213/statement.txt b/algorithmic/problems/213/statement.txt
index 5d32a1d8d..52acb02ea 100644
--- a/algorithmic/problems/213/statement.txt
+++ b/algorithmic/problems/213/statement.txt
@@ -13,9 +13,11 @@ The first line contains a single integer $n$.
 The second line contains $n$ integers, representing the sequence $a$.
 
 Output Format:
-The first line contains two integers $x$ and $m$, where $m$ represents the number of operations.
+The first line contains a single integer $x$, the chosen segment length.
 
-The next $m$ lines each contain three integers: the first two represent the shift interval, and the last one represents the direction, where $0$ means left and $1$ means right.
+The second line contains a single integer $m$, the number of operations.
+
+The next $m$ lines each contain three integers $l$, $r$, $d$: the first two represent the shift interval (it must satisfy $r - l + 1 = x$, $1 \le l \le r \le n$), and the last one represents the direction, where $0$ means left and $1$ means right.
 
 Example:
 Input:
diff --git a/algorithmic/problems/213/testdata/1.ans b/algorithmic/problems/213/testdata/1.ans
index 62ea367b3..29c7001d2 100644
--- a/algorithmic/problems/213/testdata/1.ans
+++ b/algorithmic/problems/213/testdata/1.ans
@@ -1,3 +1,3 @@
-3
+2
 1
-1 2
+1 2 0