Add two parameters of type int to the operation, and name them row and column.
向操作添加两个int类型的参数，并将其命名为row和column。
Add a public field named distance to Point, and set its type to int.
向Point添加名为distance的public字段，并将其类型设置为int。
Add a String field called name and an int field called id.
添加名为name的String字段和名为id的int字段。
Add a String field called name and an int field called id.
添加名为name的String字段和名为id的int字段。
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