S*******C
发帖数: 822 | 1 Alice has invented a new card game to play with Bob. Alice made a deck of
cards with random values between 1 and 52. Bob picks 5 cards. Then, he has
to rearrange the cards so that by utilizing the operations plus, minus, or
times, the value of the cards reach Alice's favorite number, 42. More
precisely, find operations such that ((((val1 op1 val2) op2 val3) op3 val4)
op4 val5) = 42.
Help Bob by writing a program to determine whether it is possible to reach
42 given 5 card values.
For example, Bob picks 5 cards out of the deck containing 60, 1, 3, 5, and
20. Bob rearranges the cards and supplies four operations, so that 5 * 20 -
60 + 3 - 1 = 42.
Input:
The input consists of five integers on a line, separated by spaces. Each
integer V is 0 <= V <= 52.
Output:
Print a line containing "YES" if it is possible to reach the value 42
according to the rules of the game, or "NO" otherwise. | S*******C
发帖数: 822 | 2 用 Reverse_Polish_Notation实现可以简化答案
求大神提供更多思路！ | n******n
发帖数: 12088 | 3 这不就是24点的变种。
【在 S*******C 的大作中提到】
: 用 Reverse_Polish_Notation实现可以简化答案
: 求大神提供更多思路！
| S*******C
发帖数: 822 | 4 终于有大神出现，我没做过24点，能提供更多信息吗？
马上要面试了，感激不尽
【在 n******n 的大作中提到】
: 这不就是24点的变种。
| S*******C
发帖数: 822 | 5 找到了，本版终有大神
【在 n******n 的大作中提到】
: 这不就是24点的变种。
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