题目大意: 给出杨辉三角的顶点值M和底边数的个数 N (1 ≤ N ≤ 10) ,求出底边各个数的值,其中各个数范围都为1 ~ N 当N=4,M=16时可能是这样的 3 1 2 4 4 3 6 7 9 16 Input Multiple test cases. For each case: * Line 1: Two space-separated integers: N and the final sum. Output…
1653: [Usaco2006 Feb]Backward Digit Sums Time Limit: 5 Sec Memory Limit: 64 MBSubmit: 207 Solved: 161[Submit][Status][Discuss] Description FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in a cer…
1653: [Usaco2006 Feb]Backward Digit Sums Time Limit: 5 Sec Memory Limit: 64 MBSubmit: 285 Solved: 215[Submit][Status] Description FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in a certain orde…
Backward Digit Sums Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 5664 Accepted: 3280 Description FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in a certain order and then sum ad…
P1118 [USACO06FEB]Backward Digit Sums G/S 题解: (1)暴力法.对1-N这N个数做从小到大的全排列,对每个全排列进行三角形的计算,判断是否等于N. 对每个排列进行三角形计算,需要O(N2)次.例如第1行有5个数{a,b,c,d,e},那么第2行计算4次,第3行计算3次-等等,总次数是O(N2)的. a b c d e a+b b+c c+d d+e a+2b+c b+2c+d c+2d+e …
Backward Digit Sums Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 5495 Accepted: 3184 Description FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in a certain order and then sum ad…
Backward Digit Sums Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 4487 Accepted: 2575 Description FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in a certain order and then sum ad…
