Submission #18913936 - AtCoder Beginner Contest 166
Submission #18913523 - AtCoder Beginner Contest 013
Submission #18913671 - AtCoder Regular Contest 027
Submission #18883284 - Panasonic Programming Contest (AtCoder Beginner Contest 186)
普通にしんどいし、やっぱり背伸びせずにこのレベルを解くべきなんですね〜〜……
