// 특식 배부
package Bronze_IV_4;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class Ex27110 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int n = Integer.parseInt(br.readLine());
StringTokenizer st = new StringTokenizer(br.readLine());
int a = Integer.parseInt(st.nextToken());
int b = Integer.parseInt(st.nextToken());
int c = Integer.parseInt(st.nextToken());
int sum = 0;
if (a >= n) {
sum += n;
} else { // a < n
sum += a;
}
if (b >= n) {
sum += n;
} else { // b < n
sum += b;
}
if (c >= n) {
sum += n;
} else { // c < n
sum += c;
}
System.out.println(sum);
}
}