diff --git a/339B.cpp b/339B.cpp
new file mode 100644
index 0000000..e562833
--- /dev/null
+++ b/339B.cpp
@@ -0,0 +1,25 @@
+
+#include <iostream>
+using namespace std;
+int main()
+{
+    int n, m,value;
+    cin>>n>>m;
+    int count=0;
+    int pos = 1; 
+    for(int i=0;i!=m;i++)
+    {
+        cin>>value;
+        if (value<pos)
+        {
+            count=count+(n-pos+value);
+        }
+        else
+        {
+            count=count+(value-pos);
+        }
+        pos=value;
+    }
+    cout<<count;
+    return 0;
+}