import java.math.BigDecimal;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        String to = scan.nextLine();

        BigDecimal money = new BigDecimal(100);

        BigDecimal moneyTo = new BigDecimal(to);

        BigDecimal moneyMax = new BigDecimal(1000000000000000000L);

        int i = 1;

        while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        }

        System.out.println(i);
    }
} import java.math.BigDecimal; BigDecimal java.math import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        String to = scan.nextLine();

        BigDecimal money = new BigDecimal(100);

        BigDecimal moneyTo = new BigDecimal(to);

        BigDecimal moneyMax = new BigDecimal(1000000000000000000L);

        int i = 1;

        while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        }

        System.out.println(i);
    }
} Main public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        String to = scan.nextLine();

        BigDecimal money = new BigDecimal(100);

        BigDecimal moneyTo = new BigDecimal(to);

        BigDecimal moneyMax = new BigDecimal(1000000000000000000L);

        int i = 1;

        while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        }

        System.out.println(i);
    } main {

        Scanner scan = new Scanner(System.in);

        String to = scan.nextLine();

        BigDecimal money = new BigDecimal(100);

        BigDecimal moneyTo = new BigDecimal(to);

        BigDecimal moneyMax = new BigDecimal(1000000000000000000L);

        int i = 1;

        while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        }

        System.out.println(i);
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String to = scan.nextLine(); to scan.nextLine() scan.nextLine scan BigDecimal money = new BigDecimal(100); money new BigDecimal(100) BigDecimal moneyTo = new BigDecimal(to); moneyTo new BigDecimal(to) BigDecimal moneyMax = new BigDecimal(1000000000000000000L); moneyMax new BigDecimal(1000000000000000000L) int i = 1; i 1 while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        } money.compareTo(moneyMax) == -1 money.compareTo(moneyMax) money.compareTo money moneyMax -1 1 {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        } money = money.multiply(new BigDecimal(1.01)) money money.multiply(new BigDecimal(1.01)) money.multiply money new BigDecimal(1.01) money = money.setScale(0, BigDecimal.ROUND_DOWN) money money.setScale(0, BigDecimal.ROUND_DOWN) money.setScale money 0 BigDecimal.ROUND_DOWN BigDecimal BigDecimal.ROUND_DOWN if (money.compareTo(moneyTo) >= 0) {
                break;
            } money.compareTo(moneyTo) >= 0 money.compareTo(moneyTo) money.compareTo money moneyTo 0 {
                break;
            } break; i++ i System.out.println(i) System.out.println System.out System System.out i String[] args args public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        String to = scan.nextLine();

        BigDecimal money = new BigDecimal(100);

        BigDecimal moneyTo = new BigDecimal(to);

        BigDecimal moneyMax = new BigDecimal(1000000000000000000L);

        int i = 1;

        while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        }

        System.out.println(i);
    }
} public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        String to = scan.nextLine();

        BigDecimal money = new BigDecimal(100);

        BigDecimal moneyTo = new BigDecimal(to);

        BigDecimal moneyMax = new BigDecimal(1000000000000000000L);

        int i = 1;

        while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        }

        System.out.println(i);
    }
} Main
import java.math.BigDecimal;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        String to = scan.nextLine();

        BigDecimal money = new BigDecimal(100);

        BigDecimal moneyTo = new BigDecimal(to);

        BigDecimal moneyMax = new BigDecimal(1000000000000000000L);

        int i = 1;

        while (money.compareTo(moneyMax) == -1) {

            money = money.multiply(new BigDecimal(1.01));
            money = money.setScale(0, BigDecimal.ROUND_DOWN);
            if (money.compareTo(moneyTo) >= 0) {
                break;
            }
            i++;
        }

        System.out.println(i);
    }
}
