3503须用switch语句实现
3511提示：参考例3-7，可以把for循环那行改成while((ch = getchar()) != '\n')，循环体中去掉ch=getchar()；
本实验的3515和3519题可套用实验3中3838和3839两题关于“多组测试数据”的练习框架。
| 名次 | 用户 | 昵称 | 解决 | 累计时间 | A | B | C | D | E |
| Winner | 2015329600079 | CQH 施智鹏 | 5 | 81:26:41 | 15:35:46(-2) | 15:51:46 | 15:57:57 | 16:06:15 | 16:34:57(-2) |
| 2 | 2015329600069 | 陈子民 我也就笑笑 | 5 | 111:03:22 | 25:53:43(-5) | 26:10:38 | 15:20:24 | 26:02:51 | 15:15:46(-2) |
| 3 | 2015329600070 | CQH 戴豪宇 | 5 | 167:32:39 | 40:34:19(-12) | 31:40:41(-4) | 15:28:00(-2) | 31:28:59(-9) | 39:20:40 |
| 4 | 2015329600071 | ZYF 丁旭辉 | 5 | 182:47:13 | 49:02:10(-5) | 33:13:41 | 32:58:52 | 33:28:01 | 31:04:29(-4) |
| 5 | 2015329600058 | ZYF包梦 | 5 | 316:17:59 | 103:16:42(-1) | 35:05:53 | 35:42:01 | 35:48:09 | 103:45:14(-7) |
| 6 | 2015329600053 | ZYF余钊旭 | 5 | 365:06:00 | 56:41:45(-5) | 75:43:15 | 75:50:20(-1) | 76:14:26(-4) | 76:36:14(-2) |
| 7 | 2015329600074 | CQH姜明镜 | 5 | 396:08:16 | 148:13:00 | 59:59:18 | 60:13:35 | 63:30:52 | 63:51:31(-1) |
| 8 | 2015329600056 | ZYF郑伟 | 5 | 418:09:25 | 100:48:09 | 62:38:59 | 76:16:34 | 76:37:26(-3) | 100:08:17(-2) |
| 9 | 2015329600057 | ZYF朱文星 | 5 | 433:39:16 | 111:12:26(-4) | 77:05:21 | 76:31:10 | 77:35:50(-1) | 87:14:29(-7) |
| 10 | 2015329600064 | ZYF武玉霞 | 5 | 438:48:30 | 122:12:14 | 34:42:37 | 34:50:43(-1) | 122:24:50(-1) | 123:18:06(-2) |
| 11 | 2015329600051 | ZYF杨真乙 | 5 | 443:00:02 | 32:00:18(-1) | 101:31:39 | 101:39:47(-2) | 102:18:42(-1) | 102:49:36(-4) |
| 12 | 2015329600055 | ZYF张子彦 | 5 | 444:01:17 | 32:12:02(-2) | 102:15:54 | 102:30:06 | 102:44:16 | 103:38:59 |
| 13 | 2015329600066 | 2015329600066 | 5 | 448:23:09 | 31:59:50 | 103:40:14 | 103:44:44 | 103:54:05(-2) | 104:04:16(-1) |
| 14 | 2015329600065A | ZYF夏梦楠 | 5 | 470:34:23 | 125:28:14(-1) | 56:49:30 | 57:01:58 | 101:36:45 | 125:37:56(-11) |
| 15 | 2015329600044 | ZYF龙晖 | 5 | 566:55:39 | 111:55:14(-2) | 112:16:24 | 112:56:00(-1) | 113:33:56 | 114:34:05(-2) |
| 16 | 2015329600045 | ZYF吕长江 | 5 | 597:40:37 | 126:02:14(-5) | 128:20:03 | 128:33:48 | 88:44:56 | 123:39:36(-2) |
| 17 | 2015329600041 | ZYF胡晋豪 | 5 | 615:31:18 | 125:26:19 | 125:41:25 | 125:50:11 | 88:48:36 | 148:04:47(-5) |
| 18 | 2015329600076 | ZYF金军灿 | 5 | 634:19:01 | 150:06:22(-2) | 149:57:29 | 103:34:52 | 103:42:52 | 124:57:26(-4) |
| 19 | 2015329600063 | ZYF沈睿 | 5 | 641:00:20 | 112:15:31(-2) | 112:31:24 | 132:44:06 | 133:03:39 | 149:45:40 |
| 20 | 2015329600062 | ZYF沈璐 | 5 | 643:36:09 | 127:56:00 | 128:21:13(-3) | 128:04:17 | 128:03:19 | 129:31:20(-2) |
| 21 | 2015329600072 | ZYF贺小铨 | 5 | 645:46:28 | 153:09:23 | 32:46:24 | 153:12:15 | 153:18:57 | 153:19:29 |
| 22 | 2015329600061 | CQH刘美慧 | 5 | 652:49:05 | 126:45:00(-1) | 126:53:38 | 127:15:11 | 134:45:51 | 136:09:25(-2) |
| 23 | 2015329600043 | ZYF柳昌源 | 5 | 664:09:56 | 129:57:00(-1) | 130:18:37 | 132:04:56(-12) | 133:18:48 | 134:10:35 |
| 24 | 2015329600060 | CQH李兰 | 5 | 676:55:38 | 135:11:00 | 135:14:05(-1) | 135:15:18 | 135:16:35 | 135:18:40(-1) |
| 25 | 2015329600047 | ZYF沈超 | 5 | 706:07:48 | 99:19:30(-9) | 149:58:53(-4) | 150:30:57 | 150:48:41 | 151:09:47 |
| 26 | 2015329600054 | ZYF袁文龙 | 5 | 709:57:55 | 149:58:27(-3) | 150:21:29 | 102:41:20 | 151:19:13(-1) | 152:57:26(-4) |
| 27 | 2015329600048 | ZYF童帆 | 5 | 744:00:22 | 149:15:38(-1) | 147:48:57 | 147:57:39 | 148:36:00 | 149:02:08(-3) |
| 28 | 2015329600078 | ZQL申凯 | 5 | 744:36:34 | 147:02:15(-3) | 146:41:35(-1) | 148:20:31 | 148:47:44 | 152:24:29 |
| 29 | 2015329600049 | ZYF吴胜杰 | 5 | 763:09:36 | 149:02:42(-6) | 151:37:22(-2) | 151:46:16(-3) | 152:03:33 | 153:19:43(-5) |
| 30 | 2015329600075 | ZYF蒋超 | 5 | 773:40:10 | 154:45:15 | 154:44:44 | 154:44:01 | 154:43:23 | 154:42:47 |
| 31 | 2015329600073A | ZYF 黄含 | 5 | 793:45:51 | 158:44:36 | 158:45:08 | 158:43:52 | 158:45:52 | 158:46:23 |
| 32 | 2015329600077 | hyw/cqh梁超 | 4 | 472:49:45 | 148:43:51(-2) | 31:41:23 | 145:22:09(-1) | 146:02:22 | |
| 33 | 2015329600059 | CQH程锋 | 4 | 503:10:52 | 125:07:20 | 125:25:07 | 125:55:55 | 125:42:30(-3) | (-4) |
| 34 | 2015329620057 | Nekojiru | 3 | 319:22:48 | 106:24:06 | 106:27:36 | 106:31:06 | ||
| 35 | 2015329600068 | 2015329600068 | 3 | 446:16:29 | 148:30:37 | 148:44:26 | 149:01:26 | ||
| 36 | 2014329600072ht | zyf胡涛 | 3 | 473:23:04 | 157:32:42 | 157:49:56 | 158:00:26 | (-6) | |
| 37 | 2015331250027 | yhr1601俞聪 | 2 | 111:57:01 | 55:38:20 | 56:18:41 | |||
| 38 | 2015329600042 | C_Perceval | 2 | 269:43:40 | 134:51:20 | 134:52:20 | |||
| 39 | 2015339900044 | yhr1502何俊锋 | 1 | 103:48:17 | 103:08:17(-2) | ||||
| 40 | 2015333503208 | hxp162何俊强 | 1 | 107:05:14 | 107:05:14 | ||||
| 41 | 2013330300243 | fuf13142李未来 | 1 | 130:37:50 | 130:37:50 | ||||
| 42 | 2015329600050 | ZUYF杨硕 | 1 | 151:31:11 | 151:31:11 | ||||
| 43 | 2015329600052 | ZYF游海超 | 1 | 153:24:59 | 153:24:59 | ||||
| 44 | 2015329620074 | Dark丶Joe | 1 | 158:00:31 | 158:00:31 | ||||
| 45 | Asuka0527 | SB | 0 | 00:00:00 |