import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; public class Main{ public static void main(String[] args)throws IOException{ BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); int n = Integer.parseInt(in.readLine()); String str = null;

    while((str = in.readLine()) != null){
        String[] s = str.split(" ");
        
        int sum = 0;
        for(String ch : s){
            sum += Integer.parseInt(ch);
        }
        System.out.println(sum - n);
    }
}

}