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✔️ Solution
mul(X,Y)
패턴을 찾아내고, 숫자를 곱한 결과를 모두 더합니다. 곱셈 명령어 외의 손상된 문자열은 무시합니다.do()
와don't()
명령어를 처리하여, 곱셈 명령어를 활성화하거나 비활성화합니다. 가장 최근의 활성화/비활성화 명령어만 적용되며, 기본적으로 곱셈 명령어는 활성화된 상태로 시작합니다.✔️ Reference