15 lines
337 B
Java
15 lines
337 B
Java
import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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Scanner reader = new Scanner(System.in);
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int t = reader.nextInt();
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while(t>0){
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t--;
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Long n = reader.nextLong();
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System.out.println(n*(n+1)/2);
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}
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reader.close();
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}
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}
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