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import java.util.Set;
import java.util.HashSet;
import java.util.Scanner;
class Solution{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int [] arr=new int[n];
for(int i=0;i<n;i++){
arr[i]=sc.nextInt();
}
Set<Integer> set=new HashSet<>();
for(int i=0;i<n;i++){
set.add(arr[i]);
}
System.out.println(set.size());
}
}
#subSequence
import java.util.Scanner;
class Solution{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int v=sc.nextInt();
int a=sc.nextInt();
int t=sc.nextInt();
System.out.println(v-a*t);
}
}
#velocity
class Solution{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
String s=sc.nextLine();
System.out.println(s.split(" ").length);
}
}
#word count
import java.util.Scanner;
class Solution{
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int count=0;
for(int i=1;i<n;i++){
int k=(int) Math.log10(i)+1;
if(k%2!=0){
count++;
}
}
System.out.println(count);
}
}
import java.util.Scanner;
class Solution{
public static int help(int [] arr){
int ans=0;
for(int i=0;i<arr.length;i++){
ans+=arr[i];
}
return ans ;
}
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int [] arr1=new int[n];
int [] arr2=new int[n-1];
int [] arr3=new int[n-2];
for(int i=0;i<n;i++){
arr1[i]=sc.nextInt();
}
for(int i=0;i<n-1;i++){
arr2[i]=sc.nextInt();
}
for(int i=0;i<n-2;i++){
arr3[i]=sc.nextInt();
}
int sum1=help(arr1);
int sum2=help(arr2);
int sum3=help(arr3);
long x=sum1-sum2;
long y=sum2-sum3;
System.out.println(x);
System.out.println(y);
}
}
#wipro
INFOSYS ON-CAMPUS EXAM CLEARED β
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INFOSYS ON-CAMPUS EXAM CLEARED β
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INFOSYS ON-CAMPUS EXAM CLEARED β
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INFOSYS ON-CAMPUS EXAM CLEARED β
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INFOSYS ON-CAMPUS EXAM CLEARED β
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HCL EXAM CLEARED β
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100% CLEARANCE FOR ANY EXAM β
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Infosys exam cleared β
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For any exam contact: @MLCODER2
