What's wrong with my code?

package com.codegym.task.task04.task0429;
/*
Positive and negative numbers
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String A = reader.readLine();
String B = reader.readLine();
String C = reader.readLine();
int a = Integer.parseInt(A);
int b = Integer.parseInt(B);
int c = Integer.parseInt(C);
int positive = 0;
int negative = 0;
if (a > 0){
positive ++;
} else if (a < 0){
negative++;
} else if (a == 0) {
}
if (b > 0){
positive ++;
} else if (b < 0){
negative++;
} else if (b == 0) {
}
if (c > 0){
positive ++;
} else if (c < 0){
negative++;
} else if (c == 0) {
}
System.out.println("Number of negative numbers: " + positive);
System.out.println("Number of positive numbers: " + negative);
}
}