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누적 합이 기준에 이르는 위치
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Time Limit: 2000 ms
Memory Limit: 256 MB
Bronze III
2
Author: 관리자
1
1000
1000
1000
입출력 예시
입력
5 10 3 4 2 5 1
출력
4
입력
3 100 10 20 30
출력
-1