Help me in solving CSCP04A problem

help
,
1

My issue

Show me failed test cases
Solution Failed on following Input
1
10 20 9 20
Your Output
1
Expected Output
29

My code

#include <stdio.h>
#include <stdlib.h>
int main() {
    int t;
    scanf("%d", &t);
    for (int i = 0; i < t; i++) {
        int X1, Y1, X2, Y2;
        scanf("%d %d %d %d", &X1, &Y1, &X2, &Y2);
        int distance = abs(X1 - X2) + abs(Y1 - Y2);
        printf("%d\n", distance);
    }
    return 0;
}

Learning course: Algorithmic Problem Solving
Problem Link: https://www.codechef.com/learn/course/klh-problem-solving/KLHPS2414/problems/CSCP04A