import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

public class NiceStringPart2 {
	static char previous = ' ';
	static char previous2 = ' ';
	static char previousPrevious = ' ';
	static int count = 0;
	static int index = 0;
	static int index2 = 0;
	static boolean sandwich = false;
	static boolean doublePair = false;
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		for(String line : Files.readAllLines(Paths.get("C:/Users/Gregorio21/Desktop/Advent.txt"))){
				if(sandwich && doublePair){
					count ++;
				}
				sandwich = false;
				doublePair = false;
				previous = ' ';
				previous2 = ' ';
				previousPrevious = ' ';
				index = 0;
				System.out.println(count);
			for(char chars : line.toCharArray()){
				if(chars == previousPrevious){
					sandwich = true;
				}

				for(char chars2 : line.toCharArray()){
					if((index2 - index > 1 && chars2 == chars)){
						if((previous == previous2)){
							doublePair = true;
						}
					}
					previous2 = chars2;
					index2 ++;
				}
				previousPrevious = previous;
				previous = chars;
				index2 = 0;
				index ++;
			}
		}
		System.out.println(count);
	}
}