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Solves
| Challenge | Category | Value | Time |
| 签到 | CRYPTO.BJDCTF2020 | 10 | |
| vim临时文件泄露 | VIP题目限免 | 10 | |
| 杂项11 | 萌新 | 1 | |
| One PieNG 1 | MISC.PNG隐写入门赛 | 20 | |
| One PieNG 17 | MISC.PNG隐写入门赛 | 20 | |
| One PieNG 2 | MISC.PNG隐写入门赛 | 20 | |
| One PieNG 10 | MISC.PNG隐写入门赛 | 20 | |
| One PieNG 18 | MISC.PNG隐写入门赛 | 20 | |
| One PieNG 15 | MISC.PNG隐写入门赛 | 20 | |
| One PieNG 6 | MISC.PNG隐写入门赛 | 20 | |
| 密码学签到 | CRYPTO | 1 | |
| 感受下气氛 | 渔人杯 | 10 | |
| 简单二维码 | 渔人杯 | 100 |