题解 | 矩阵和向量的点积

def matrix_vector_dot_product(matrix, vector):
    if len(vector)!=len(matrix[0]):
        return -1
    else:
        return [sum(a*b for a,b in zip(row, vector)) for row in matrix]

# 主程序
if __name__ == "__main__":
    # 输入矩阵和向量
    matrix_input = input()
    vector_input = input()

    # 处理输入
    import ast
    matrix = ast.literal_eval(matrix_input)
    vector = ast.literal_eval(vector_input)

    # 调用函数计算点积
    output = matrix_vector_dot_product(matrix, vector)
    
    # 输出结果
    print(output)