백준8393: 합
문제
https://www.acmicpc.net/problem/8393
문제 풀이
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import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int sum=0;
for (int i = 1; i <= n; i++) {
sum+=i;
}
System.out.println(sum);
}
}
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