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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#21402#2817. 鸽鸽的分割qingyu_orz#AC ✓1ms3804kbC++182b2022-03-04 19:20:392022-05-08 03:08:02

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2022-05-08 03:08:02]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:3804kb
  • [2022-03-04 19:20:39]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    while(~scanf("%d",&n)){
    	printf("%d\n",((n*(n-1)*(n-2)*(n-3))/24)+(n*(n-1)/2)+1);
	} 
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 1ms
memory: 3804kb

input:

0
1
2
3
4
5
6
7
8
9
10
20
30
40
50
60
61
62
63
64

output:

1
1
2
4
8
16
31
57
99
163
256
5036
27841
92171
231526
489406
523686
559737
597619
637393

result:

ok 20 lines