Submission #1417402

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Source Code Expand

import java.io.*;
public class Main{
    public static void main(String[] args) throws IOException{
	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	int N = Integer.parseInt(br.readLine());
	int i, old_x, new_x, count;
	String S = br.readLine();
	if(S.length() != N){
	    System.exit(1);
	}
	new_x = 0;
	count = 0;
	while(new_x != N){
	    old_x = new_x;
	    if(old_x + 3 < N){
		for(i = old_x + 3;i > old_x;i--){
		    if(S.charAt(i) == '.'){
			new_x = i;
			break;
		    }
		}
		if(new_x == old_x){
		    count++;
		    new_x += 3;
		}
	    }else{
		new_x = N;
	    }
	}
	System.out.println(count);
    }
}

Submission Info

Judge Result