Added code of Covid Run Problem

Description of problem

Covid Run ( October Challenge 2020 Division 2)
CodeChef platform

Author: Anupam-Panwar

CodeChef_problems/CVDRUN.cpp

@@ -0,0 +1,59 @@
+////************************** it's all about practice ***********************
+//#include<bits/stdc++.h>
+//using namespace std;
+////**** Abbrevations ****
+//typedef long long ll;
+//typedef unsigned long long ull;
+//typedef long double ld;
+////**** STL ****
+//#define pb push_back
+//#define pf push_front
+//#define ppb pop_back
+//#define ppf pop_front
+//#define ff first
+//#define ss second
+//#define mp make_pair
+//#define ALL(x) x.begin(), x.end()
+////**** some I/O ****
+//#define no         cout << "NO\n"
+//#define yes        cout << "YES\n"
+////**** Fast I/O ****
+//#define FAST_IO ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
+////**** Short Code ****
+//#define tc ll t;cin>>t;while(t--)
+//#define fi(a,b) for(ll i=a;i<b;i++)
+//#define fj(a,b) for(ll j=a;j<b;j++)
+//#define fk(a,b) for(ll k=a;k<b;k++)
+///*---------------------------------------------------------------------------*/
+//int main()
+//{
+//    FAST_IO
+//    tc
+//    {
+//        int n,k,x,y;
+//        cin>>n>>k>>x>>y;
+//        bool c=false;
+//        int i=x;
+//        if(x==y)
+//            c=true;
+//        else
+//            i=(i+k)%n;
+//        while(i!=x)
+//        {
+//            if(i==y)
+//            {
+//                c=true;
+//                break;
+//            }
+//            else
+//                i=(i+k)%n;
+//        }
+//        if(c==true)
+//            yes;
+//        else
+//            no;
+//
+//    }
+//    return 0;
+//}
+//