Submission #1591925

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Source Code Expand

import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner read=new Scanner(System.in);
        int num=read.nextInt();
        int count=0;
        int i;
        for(i=1; i<num; i++){
            int a=read.nextInt();

            if (a==i){
                count++;
            i++;
            a=read.nextInt();

            }

        }
        if(i!=num+1) {
            int last = read.nextInt();
            if (last == num) {
                count++;
            }
        }

        System.out.println(count);
    }
}

Submission Info

Judge Result