import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int a = sc.nextInt();
int b = sc.nextInt();
int c = sc.nextInt();
if(a + c > b) {
System.out.println(a + c);
}else {
System.out.println(b);
}
sc.close();
}
}