Code Gladiators 2021 - The Virus Outbreak Coding Problem in C#

In the Martian land faraway, a new virus has evolved and is attacking the individuals at a fast pace. The scientists have figured out the virus composition, V. The big task is to identify the people who are infected.The sample of N people is taken to check if they are POSITIVE or NEGATIVE. A report is generated which provides the current blood composition B of the person.

POSITIVE or NEGATIVE ?

If the blood composition of the person is a subsequence of the virus composition V, then the person is identified as POSITIVE otherwise NEGATIVE.

Example:
Virus Composition, V = coronavirus
Blood Composition of the person , B = ravus
The person in question is POSITIVE as B is the subsequence of the V

The scientists are busy with their research for medicine and request you to build a program which can quickly figure out if the person is POSITIVE or NEGATIVE. They will provide you with the virus composition V and all the people's current blood composition. Can you help them?

Note: The virus and blood compositions are lowercase alphabet strings.

Input Format
The first line of the input consists of the virus composition, V
The second line of he input consists of the number of people, N
Next N lines each consist of the blood composition of the ith person, Bi

Constraints
1<= N <=10
1<= |B|<= |V|<= 10^5

Output Format
For each person, print POSITIVE or NEGATIVE in a separate line.

Input
coronavirus
3
abcde
crnas
onarous
 

Output
NEGATIVE
POSITIVE
NEGATIVE

Solution:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class VirusOutBreak
    {

        public static void Main()
        {
            string V = Console.ReadLine();
            int N = Convert.ToInt32(Console.ReadLine());
            string[] Msg = new string[N];
            for (int k = 0; k < N; k++)
            {
                string B = Console.ReadLine();
                bool result = TestReport(B, V, B.Length, V.Length);
                if (result)
                    Msg[k] = "POSITIVE";
                else
                    Msg[k] = "NEGATIVE";
            }
            for (int p = 0; p < N; p++)
            {
                Console.WriteLine(Msg[p]);
            }
            Console.Read();
        }

        static bool TestReport(string Blood, string Virus, int m, int n)
        {
            int j = 0;
            for (int i = 0; i < n && j < m; i++)
                if (Blood[j] == Virus[i])
                    j++;
            return (j == m);
        }
    }
}