Added 339B - Xenia and Ringroad.cpp

Author: vikashpatel24

339B - Xenia and Ringroad.cpp

@@ -0,0 +1,42 @@
+//                                 ॐ नमः शिवाय
+#include<bits/stdc++.h>
+using namespace std;
+
+#define ll long long
+#define pb push_back
+#define ff first
+#define ss second
+#define mp make_pair
+ 
+// Code Written By: Vikash Patel
+// Codeforces Profile: https://codeforces.com/profile/vikashpatel
+
+int main()
+{
+    ios_base::sync_with_stdio(0);
+    cin.tie(0);
+    cout.tie(0);
+    
+    // #ifndef ONLINE_JUDGE
+    // freopen("input.txt", "r", stdin);
+    // freopen("/Users/vikash/Desktop/output.txt", "w", stdout);
+    // #endif
+    
+    int n, m;
+    cin>>n>>m;
+    int a[m];
+    for(int i=1; i<=m; i++)
+    {
+        cin>>a[i];
+    }
+    long long time = a[1]-1;
+    for(int i=2; i<=m; i++)
+    {
+        if(a[i] < a[i-1])
+        time += (n-a[i-1] + a[i]);
+        if(a[i] > a[i-1])
+        time += (a[i]-a[i-1]);
+    }
+    cout<<time<<endl;
+    return 0;
+}