题解 | 乘之
乘之
https://www.nowcoder.com/practice/27f9544dca8642869afdc230f62400a8
T_1=int(input()) for _ in range(T_1): n,k=map(int,input().split()) list_an=map(int,input().split()) print(sum(list_an)*k)
乘之
https://www.nowcoder.com/practice/27f9544dca8642869afdc230f62400a8
T_1=int(input()) for _ in range(T_1): n,k=map(int,input().split()) list_an=map(int,input().split()) print(sum(list_an)*k)
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