// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
class Solution {
public int solution(int[] A, int[] B) {
// write your code in Java SE 8
int answer = 0;
int previousLineEndIndex = -1;
for(int i=0; i<A.length; i++) {
if(A[i] > previousLineEndIndex) {
answer++;
previousLineEndIndex = B[i];
}
}
return answer;
}
}