{ "data": { "question": { "questionId": "2123", "questionFrontendId": "1996", "categoryTitle": "Algorithms", "boundTopicId": 972379, "title": "The Number of Weak Characters in the Game", "titleSlug": "the-number-of-weak-characters-in-the-game", "content": "

You are playing a game that contains multiple characters, and each of the characters has two main properties: attack and defense. You are given a 2D integer array properties where properties[i] = [attacki, defensei] represents the properties of the ith character in the game.

\n\n

A character is said to be weak if any other character has both attack and defense levels strictly greater than this character's attack and defense levels. More formally, a character i is said to be weak if there exists another character j where attackj > attacki and defensej > defensei.

\n\n

Return the number of weak characters.

\n\n

 

\n

Example 1:

\n\n
\nInput: properties = [[5,5],[6,3],[3,6]]\nOutput: 0\nExplanation: No character has strictly greater attack and defense than the other.\n
\n\n

Example 2:

\n\n
\nInput: properties = [[2,2],[3,3]]\nOutput: 1\nExplanation: The first character is weak because the second character has a strictly greater attack and defense.\n
\n\n

Example 3:

\n\n
\nInput: properties = [[1,5],[10,4],[4,3]]\nOutput: 1\nExplanation: The third character is weak because the second character has a strictly greater attack and defense.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "游戏中弱角色的数量", "translatedContent": "

你正在参加一个多角色游戏，每个角色都有两个主要属性：攻击 和 防御 。给你一个二维整数数组 properties ，其中 properties[i] = [attacki, defensei] 表示游戏中第 i 个角色的属性。

\n\n

如果存在一个其他角色的攻击和防御等级 都严格高于 该角色的攻击和防御等级，则认为该角色为 弱角色 。更正式地，如果认为角色 i 弱于 存在的另一个角色 j ，那么 attackj > attacki 且 defensej > defensei 。

\n\n

返回 弱角色 的数量。

\n\n

 

\n\n

示例 1：

\n\n
\n输入：properties = [[5,5],[6,3],[3,6]]\n输出：0\n解释：不存在攻击和防御都严格高于其他角色的角色。\n
\n\n

示例 2：

\n\n
\n输入：properties = [[2,2],[3,3]]\n输出：1\n解释：第一个角色是弱角色，因为第二个角色的攻击和防御严格大于该角色。\n
\n\n

示例 3：

\n\n
\n输入：properties = [[1,5],[10,4],[4,3]]\n输出：1\n解释：第三个角色是弱角色，因为第二个角色的攻击和防御严格大于该角色。\n
\n\n

 

\n\n

提示：

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