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자릿수의 합
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Time Limit: 1000 ms
Memory Limit: 256 MB
Bronze V
1
Author: 관리자
1
+
5
=
15
제한
1
≤
N
≤
2
000
000
000
1 \le N \le 2\,000\,000\,000
1
≤
N
≤
2
000
000
000
입출력 예시
입력 1
9015
출력 1
15
입력 2
7
출력 2
7