Problem1787--【入门】字符图形-数字正三角（2）1787: 【入门】字符图形-数字正三角（2）
Time Limit: 1.000 Sec Memory Limit: 64 MB
Submit: 12 Solved: 13
[Submit] [Status] [Web Board] [Creator:][下载测试数据] Description
Input
Output
Sample Input
3
Sample Output
1
123
12345
Source/Category
[Submit] [Status]