Help me in solving LJAJAG37 problem

help
,
1

My issue

i cant solve this question

My code

#include <stdio.h>
#include<ctype.h>

int main() {
    // your code goes here
    char ch;
    int Lines = 0, Words = 0, Characters = 0, in_word = 0;

    while ((ch = getchar()) != EOF) {
        if (ch == '\n') {
            Lines++;
        } else {
            Characters++;
        }

        if (isspace(ch)) {
            in_word = 0;
        } else if (!in_word) {
            Words++;
            in_word = 1;
        }

    }

    if (Characters > 0 && ch != '\n') {
        Lines++;
    }

    printf("Lines: %d\n", Lines);
    printf("Words: %d\n", Words);
    printf("Characters: %d\n", Characters);

    return 0;
}

Learning course: Learn C Programming
Problem Link: https://www.codechef.com/learn/course/rcpit-programming-c/RCPITLPC12/problems/LJAJAG37