Marathon

Algorithm Analysis

The number of runners who finished equals a – b.

Since a, b ≤ $1 0^{18}$ , it is necessary to use the long long type.

Algorithm Implementation

Read the input data. Calculate and output the answer a – b.

scanf("%lld %lld", &a, &b);
res = a - b;
printf("%lld\n", res);

Java Implementation

import java.util.*;

public class Main
{
    public static void main(String[] args)
    {
        Scanner con = new Scanner(System.in);
        long a = con.nextLong();
        long b = con.nextLong();
        long res = a - b;
        System.out.println(res);
        con.close();
    }
}

Python Implementation

a, b = map(int, input().split())
res = a - b
print(res)