public class Main {
public static void main(String[] args) {
int ans = 0;
for (int i = 1; i <= 2020; i++) {
char[] a = String.valueOf(i).toCharArray();
for (int j = 0; j < a.length; j++) {
if (a[j] == '2') ans++;
}
}
System.out.println(ans);
}
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public class Main { public static void main(String[] args) { int ans = 0; for (int i = 1; i <= 2020; i++) { char[] a = Strin