import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (scanner.hasNext()) {
int b = scanner.nextInt();
int continueCount = 0;
int max = 0;
while (b > 0) {
if ((b & 1) == 1) {
max = Math.max(++continueCount, max);
} else {
continueCount = 0;
}
b >>= 1;
}
System.out.println(max);
}
}
}

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