| 1 |
https://codeforces.com/contest/1659/problem/B |
|
中等 |
| 2 |
https://acm.hdu.edu.cn/showproblem.php?pid=2817 |
|
简单 |
| 3 |
http://poj.org/problem?id=2453 |
|
中等 |
| 4 |
https://codeforces.com/problemset/problem/437/B |
|
中等 |
| 5 |
https://acm.hdu.edu.cn/showproblem.php?pid=6702 |
|
较简单 |
| 6 |
https://codeforces.com/problemset/problem/1017/B |
|
较简单 |
| 7 |
https://codeforces.com/problemset/problem/1426/C |
|
较简单 |
| 8 |
https://codeforces.com/problemset/problem/1428/A |
|
较简单 |