QOJ.ac

QOJ

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
#302738#370. CityNATURAL68 144ms16740kbC++141.0kb2024-01-11 10:40:192024-01-11 10:40:20

Judging History

你现在查看的是最新测评结果

  • [2024-01-11 10:40:20]
  • 评测
  • 测评结果：8
  • 用时：144ms
  • 内存：16740kb
查看
  • [2024-01-11 10:40:19]
  • 提交

Encoder

#include<bits/stdc++.h>
#include "Encoder.h"
using namespace std;
int n,dfn[250010],tot,pos[250010],siz[250010];
vector<int>e[250010];
inline void dfs(int rt,int da)
{
    dfn[rt]=pos[rt]=++tot;
    for(int i:e[rt])
    {
        if(i==da)continue;
        dfs(i,rt);
        pos[rt]=max(pos[rt],pos[i]);
    }
    int s=1,lim=pos[rt]-dfn[rt]+1;
    while(s<lim)s<<=1;tot=max(dfn[rt]+s-1,tot);
    siz[rt]=s;
    return ;
}
void Encode(int N,int A[],int B[])
{
    n=N;
    for(int i=0;i<n-1;++i)
    {
        e[A[i]].emplace_back(B[i]);
        e[B[i]].emplace_back(A[i]);
    }
    dfs(0,0);
    for(int i=0;i<n;++i)
	Code(i,dfn[i]|((31-__builtin_clz(siz[i]))<<25));
    return ;
}
源文件, 语言: C++14

Device

#include<bits/stdc++.h>
#include "Device.h"
using namespace std;
void InitDevice(){return ;}
int Answer(long long S,long long T)
{
    int Mx=(1<<25)-1,dfns,dfnt,sizs,sizt;
    dfns=S&Mx,dfnt=T&Mx;
    sizs=1<<(S>>25);sizt=1<<(T>>25);
    if(dfns<=dfnt&&dfnt<=dfns+sizs-1)return 1;
    if(dfnt<=dfns&&dfns<=dfnt+sizt-1)return 0;
    return 2;
}
源文件, 语言: C++14

詳細信息

Subtask #1:

score: 8
Accepted

Test #1:

score: 8
Accepted
time: 4ms
memory: 12072kb

input:

10 45
0 5
0 2
4 3
6 4
0 6
2 8
6 9
2 1
5 7
5 0
0 2
8 0
0 7
0 6
1 0
4 0
0 3
0 9
5 2
5 8
7 5
5 6
1 5
4 5
5 3
9 5
8 2
7 2
2 6
2 1
2 4
3 2
2 9
7 8
6 8
8 1
8 4
3 8
9 8
6 7
1 7
4 7
3 7
9 7
1 6
6 4
6 3
6 9
4 1
1 3
9 1
3 4
9 4
9 3

output:

134217729 6 67108868 10 33554441 33554434 67108872 3 5 11

input:

Interaction has been finished!

output:

0
1
0
1
1
0
0
1
1
2
2
0
2
2
2
2
2
0
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
2
2
2
0
2
2
134217729

result:

ok

Test #2:

score: 8
Accepted
time: 6ms
memory: 11804kb

input:

10 45
6 2
0 7
6 9
7 6
0 8
5 4
8 1
7 3
0 5
7 0
0 5
8 0
0 3
6 0
0 1
0 9
4 0
0 2
5 7
8 7
7 3
6 7
7 1
7 9
4 7
7 2
5 8
5 3
5 6
1 5
9 5
4 5
2 5
8 3
6 8
1 8
9 8
8 4
2 8
3 6
3 1
9 3
4 3
2 3
6 1
9 6
4 6
2 6
1 9
1 4
2 1
4 9
9 2
4 2

output:

134217729 11 4 7 13 33554444 67108867 100663298 33554442 5

input:

Interaction has been finished!

output:

0
1
0
1
0
1
1
0
1
2
2
1
0
2
1
2
1
2
2
2
2
2
0
2
2
2
0
2
2
2
2
2
2
2
2
2
0
2
0
2
2
2
2
2
2
134217729

result:

ok

Test #3:

score: 8
Accepted
time: 6ms
memory: 15232kb

input:

10 45
0 9
0 7
7 3
6 2
6 1
9 8
6 4
7 5
3 6
7 0
9 0
3 0
0 6
4 0
1 0
8 0
0 2
0 5
9 7
7 3
7 6
7 4
1 7
8 7
2 7
7 5
9 3
9 6
4 9
1 9
8 9
9 2
5 9
3 6
4 3
1 3
3 8
2 3
5 3
4 6
6 1
8 6
2 6
6 5
4 1
4 8
4 2
5 4
8 1
1 2
1 5
2 8
5 8
2 5

output:

134217729 8 7 100663301 9 13 67108870 134217732 3 33554434

input:

Interaction has been finished!

output:

0
0
0
1
0
0
0
1
1
2
1
1
1
0
2
0
1
2
2
2
2
0
2
2
1
0
0
2
0
2
0
1
2
0
2
2
2
2
2
2
2
2
2
2
2
134217732

result:

ok

Test #4:

score: 8
Accepted
time: 6ms
memory: 15468kb

input:

10 45
3 8
9 6
7 4
7 5
7 9
5 2
0 3
3 1
0 7
7 0
3 0
0 9
6 0
1 0
8 0
0 5
0 2
4 0
7 3
9 7
7 6
1 7
7 8
7 5
2 7
7 4
9 3
6 3
1 3
8 3
5 3
3 2
4 3
9 6
9 1
8 9
5 9
2 9
9 4
1 6
6 8
6 5
2 6
4 6
1 8
5 1
1 2
1 4
8 5
2 8
8 4
5 2
4 5
2 4

output:

134217729 4 9 67108866 7 33554440 11 100663302 3 33554442

input:

Interaction has been finished!

output:

0
0
1
0
0
0
1
1
0
2
0
1
2
2
1
0
1
2
2
0
0
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
2
134217729

result:

ok

Test #5:

score: 8
Accepted
time: 0ms
memory: 15312kb

input:

10 45
8 7
6 8
7 0
2 5
9 0
4 5
1 9
3 9
5 7
7 0
0 9
0 5
0 8
3 0
0 1
2 0
4 0
0 6
7 9
7 5
8 7
7 3
1 7
2 7
7 4
6 7
5 9
9 8
3 9
1 9
2 9
9 4
9 6
5 8
5 3
1 5
2 5
5 4
5 6
3 8
1 8
2 8
8 4
6 8
3 1
2 3
4 3
6 3
2 1
1 4
6 1
4 2
6 2
4 6

output:

134217729 11 6 12 7 67108869 4 100663298 33554435 67108874

input:

Interaction has been finished!

output:

0
1
1
1
0
1
0
0
1
2
1
0
2
2
0
1
0
2
2
0
0
2
2
2
2
2
2
0
1
2
2
2
2
2
0
2
2
2
2
2
2
2
2
2
2
134217729

result:

ok

Test #6:

score: 8
Accepted
time: 4ms
memory: 15068kb

input:

9 36
3 6
4 3
6 8
4 2
3 1
0 7
0 4
7 5
7 0
5 0
0 4
0 3
2 0
1 0
6 0
0 8
7 5
4 7
3 7
2 7
1 7
6 7
8 7
5 4
5 3
5 2
5 1
6 5
8 5
3 4
4 2
4 1
4 6
8 4
2 3
3 1
6 3
8 3
1 2
2 6
2 8
1 6
8 1
6 8

output:

134217729 8 9 67108869 100663300 3 33554438 33554434 7

input:

Interaction has been finished!

output:

0
0
1
1
0
0
0
1
1
2
2
2
2
2
2
2
2
2
2
2
2
0
1
1
1
0
2
1
0
0
2
2
2
2
2
1
134217729

result:

points 1.0

Test #7:

score: 8
Accepted
time: 0ms
memory: 15232kb

input:

10 45
0 5
4 7
4 2
0 4
1 6
0 1
1 8
0 9
9 3
0 1
4 0
2 0
0 8
0 6
0 9
5 0
3 0
7 0
1 4
1 2
8 1
1 6
1 9
5 1
1 3
7 1
2 4
4 8
4 6
9 4
4 5
3 4
4 7
2 8
2 6
9 2
5 2
2 3
7 2
6 8
8 9
8 5
3 8
8 7
9 6
6 5
6 3
6 7
9 5
3 9
9 7
3 5
5 7
3 7

output:

134217729 67108871 5 12 67108867 2 8 4 9 33554443

input:

Interaction has been finished!

output:

1
0
0
1
1
1
0
0
0
2
2
0
1
2
2
2
2
0
2
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
0
2
2
2
2
134217729

result:

ok

Test #8:

score: 8
Accepted
time: 0ms
memory: 15216kb

input:

5 10
4 1
0 4
0 2
2 3
0 4
2 0
1 0
3 0
2 4
4 1
4 3
1 2
2 3
1 3

output:

100663297 3 33554436 5 33554434

input:

Interaction has been finished!

output:

1
0
0
0
2
1
2
2
1
2
100663297

result:

points 1.0

Test #9:

score: 8
Accepted
time: 0ms
memory: 11924kb

input:

7 21
4 1
2 5
0 6
0 4
0 2
5 3
0 4
1 0
0 6
0 2
0 5
3 0
4 1
6 4
2 4
4 5
4 3
6 1
1 2
1 5
1 3
2 6
5 6
3 6
2 5
2 3
5 3

output:

100663297 4 67108869 7 33554435 33554438 2

input:

Interaction has been finished!

output:

1
0
1
1
1
0
1
2
2
2
2
2
2
2
2
2
2
2
1
1
1
100663297

result:

points 1.0

Test #10:

score: 8
Accepted
time: 6ms
memory: 15016kb

input:

8 28
7 2
2 1
0 3
2 4
7 5
0 7
0 6
0 3
0 6
0 7
0 2
5 0
0 4
0 1
6 3
7 3
2 3
5 3
4 3
1 3
7 6
2 6
6 5
4 6
6 1
7 2
7 5
4 7
1 7
5 2
2 4
1 2
4 5
5 1
4 1

output:

134217729 5 67108868 2 6 8 11 100663299

input:

Interaction has been finished!

output:

1
1
1
1
0
1
1
2
2
2
2
2
2
2
2
2
2
2
1
1
0
0
2
1
0
2
2
2
134217729

result:

points 1.0

Test #11:

score: 8
Accepted
time: 6ms
memory: 12508kb

input:

6 15
0 3
1 4
1 5
4 2
0 1
1 0
0 5
4 0
0 3
0 2
1 5
4 1
1 3
2 1
5 4
3 5
5 2
3 4
2 4
3 2

output:

100663297 67108867 5 2 33554436 6

input:

Interaction has been finished!

output:

0
1
0
1
1
1
0
2
0
2
2
2
2
0
2
100663297

result:

points 1.0

Test #12:

score: 8
Accepted
time: 4ms
memory: 12072kb

input:

4 6
0 2
2 3
0 1
0 1
0 2
0 3
2 1
3 1
3 2

output:

67108865 4 33554434 3

input:

Interaction has been finished!

output:

1
1
1
2
2
0
67108865

result:

points 1.0

Subtask #2:

score: 0
Stage 1: Program Program Time Limit Exceeded

Test #13:

score: 86.1504
Acceptable Answer
time: 58ms
memory: 12420kb

input:

700 244650
407 643
680 336
573 208
466 455
159 648
575 549
50 567
251 211
211 481
530 513
136 334
112 492
175 396
643 483
265 132
20 160
174 550
251 90
99 236
579 374
670 613
495 379
251 170
652 61
495 467
27 317
202 484
420 592
542 354
565 650
35 88
216 681
277 219
299 171
220 647
418 433
434 660
2...

output:

402653185 33556030 2058 1034 33556768 67110252 33556819 1629 1527 2429 67110990 1603 1204 33554473 2341 33556497 1362 33556749 2318 431 67110382 167773445 1173 1396 1515 1435 239 67108889 9 2406 33554870 2123 67111192 2088 33556745 167773499 1086 291 1554 29 100664922 1227 1033 33555784 33556782 671...

input:

Interaction has been finished!

output:

0
0
0
0
1
0
1
1
1
1
0
0
1
0
1
1
1
0
1
1
1
1
0
1
1
0
1
0
0
1
1
1
0
1
1
1
1
1
1
0
1
0
0
0
0
1
1
0
0
1
1
0
1
1
0
0
0
1
1
0
0
1
0
0
1
0
0
0
1
1
1
1
0
1
0
1
1
1
0
1
1
1
1
0
0
0
1
1
0
0
1
0
1
1
0
1
0
0
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
1
1
0
1
1
0
0
1
0
0
1
0
1
0
0
0
1
0
0
1
0
1
1
1
1
1
0
1
0
0
0
1
0
0
0
0
1
...

result:

points 0.93641711870

Test #14:

score: 83.9265
Acceptable Answer
time: 58ms
memory: 15416kb

input:

699 243951
59 192
191 301
270 524
135 496
647 573
174 262
662 43
371 50
655 434
123 242
209 46
612 646
11 533
156 443
322 462
329 558
417 383
283 263
615 504
29 520
391 135
546 535
54 264
382 651
541 427
536 456
295 169
645 303
494 21
282 179
329 490
191 67
697 55
226 276
32 160
226 482
392 56
144 1...

output:

469762049 1404 33556943 1323 841 33554790 806 67110159 67110180 33555679 67110937 436207618 203 67109071 1437 67110354 2068 2058 2546 33554634 134219693 230 2493 33554509 33555149 147 67108970 67110319 2498 67108979 348 100665312 100664021 134218207 67109679 3332 100663532 2572 33556983 33557021 293...

input:

Interaction has been finished!

output:

1
0
1
1
1
1
0
1
0
0
0
0
1
0
0
1
0
1
0
0
0
1
0
1
1
1
1
0
0
1
1
1
0
0
1
1
1
0
0
1
0
1
1
1
0
0
0
0
1
0
0
0
1
0
1
1
0
0
0
0
0
1
1
0
0
0
1
0
1
1
0
1
1
1
0
0
0
0
1
0
1
0
1
1
0
1
0
0
1
1
1
0
1
0
0
1
1
0
1
1
0
1
1
0
1
1
0
1
0
0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
0
1
1
0
1
1
1
1
0
1
0
1
0
0
1
1
1
0
0
1
1
0
0
1
0
0
...

result:

points 0.91224402950

Test #15:

score: 84.9956
Acceptable Answer
time: 58ms
memory: 12516kb

input:

700 244650
32 619
369 483
58 148
484 103
190 630
589 659
90 204
515 464
215 254
688 658
454 3
286 582
158 246
90 164
648 13
602 240
237 8
36 620
31 558
515 560
302 39
373 418
288 388
50 516
26 514
190 467
190 439
600 35
258 421
148 214
251 111
50 62
10 530
624 466
666 637
666 692
285 650
137 686
280...

output:

436207617 1067 2799 2710 201326776 100667579 3042 2187 33554509 33554656 167773261 100663358 4264 2732 33555535 1188 1081 2192 134218886 134217799 250 33556512 33557402 2314 4365 1162 33555104 2959 58 33555466 2742 167774470 33556754 67113417 2804 33557155 100665356 3062 136 67109041 167776393 1029 ...

input:

Interaction has been finished!

output:

1
1
0
1
1
1
0
0
0
0
1
1
0
0
1
1
1
1
0
1
1
1
1
1
0
1
0
1
0
1
1
0
1
1
1
1
1
0
1
1
1
0
0
0
0
0
1
1
1
1
1
0
0
1
1
1
1
0
0
1
1
1
0
0
1
1
1
0
1
0
1
0
1
1
0
0
1
1
0
1
1
1
1
1
0
1
0
1
0
0
0
1
1
0
1
1
0
1
0
0
1
0
1
0
1
0
1
1
0
0
0
0
0
1
0
1
1
1
0
0
0
1
0
0
0
1
1
1
1
1
1
0
0
1
0
0
0
1
1
1
0
0
0
0
1
1
0
0
0
1
...

result:

points 0.92386524730

Test #16:

score: 86.1504
Acceptable Answer
time: 58ms
memory: 15068kb

input:

700 244650
230 624
291 145
565 474
12 535
152 335
438 692
136 13
199 155
255 47
546 152
293 254
427 131
71 388
31 231
124 522
503 23
320 545
322 480
674 535
247 415
301 163
226 63
560 367
361 103
391 149
483 661
262 632
337 79
45 59
182 489
526 425
275 369
256 598
42 487
125 63
661 23
181 152
366 29...

output:

402653185 1134 2530 100665810 1135 2233 473 404 67109078 201326598 1178 100664631 100665745 100663345 67111021 234882052 201327949 167772495 100663509 100663664 100665523 2389 67111388 201326861 67111183 67111219 167773453 2294 1202 1382 120 1296 167774673 2202 67108970 67111026 2455 1099 167774246 ...

input:

Interaction has been finished!

output:

1
0
1
1
0
1
1
0
1
0
0
1
0
1
1
1
0
1
0
1
0
0
1
0
1
1
0
1
0
1
0
1
0
0
1
0
0
0
1
0
1
1
1
0
0
1
0
0
0
0
1
0
0
1
1
1
0
0
0
1
0
0
0
0
1
1
1
0
1
0
0
1
1
1
1
1
1
1
0
1
1
1
0
1
1
1
1
1
1
1
1
0
0
1
1
1
0
1
0
0
0
0
0
1
0
1
1
1
0
1
1
0
0
1
0
0
0
1
1
1
1
1
0
1
1
1
0
0
1
1
0
0
0
1
0
0
1
0
1
1
1
0
1
0
0
1
0
1
0
1
...

result:

points 0.93641711870

Test #17:

score: 75.5614
Acceptable Answer
time: 122ms
memory: 13704kb

input:

250000 250000
98377 99261
85304 211210
196850 193036
80796 130416
3160 72100
145991 142897
200915 46448
218676 213491
89680 96159
73896 8598
61659 226081
22401 122629
228272 20662
17177 215756
118511 136128
95692 43162
78229 30135
134970 150179
163578 188576
213241 99059
203107 94390
139934 51361
18...

output:

838860801 76888844 48067264 6217480 9609945 2869422 555262 10193725 43312722 9799484 3644795 11243683 44862713 10192069 2828862 2720938 73497915 72473 45099142 89720599 45006619 35249199 1680432 2746800 41871989 5961644 69147344 9844910 8186974 36383747 43755071 7245419 308314 6659023 236936654 7865...

input:

Interaction has been finished!

output:

2
2
1
1
2
0
0
0
2
1
2
0
2
0
2
0
1
0
0
2
1
2
2
0
2
0
0
2
2
2
1
2
2
2
2
1
1
2
2
1
1
2
0
1
1
0
0
2
2
1
0
1
0
2
2
1
1
2
0
1
2
2
2
0
2
0
1
1
1
1
2
2
0
0
2
2
2
2
2
0
2
2
2
2
1
2
2
2
1
2
1
0
2
0
0
0
0
1
2
1
2
1
1
1
1
0
0
0
2
2
0
2
1
2
2
2
2
2
2
0
1
2
2
2
0
2
2
1
0
2
1
2
2
2
0
1
0
1
1
2
1
2
2
0
0
2
1
2
2
1
...

result:

points 0.8213199790

Test #18:

score: 75.5614
Acceptable Answer
time: 144ms
memory: 15592kb

input:

250000 250000
58662 187031
88005 38197
22682 178770
111851 15764
207630 198631
64191 185171
168598 129456
142337 237430
215849 182270
211116 93208
20 204879
130122 42963
11672 121189
75991 33257
87185 128123
33289 2936
144056 47212
140138 18041
2913 20891
194901 213077
39452 3187
187440 25628
73551 ...

output:

838860801 56065353 16795660 2325882 8766 16888934 153613131 123823993 18100388 16929393 89112818 67779916 56607605 118233111 83999133 285293367 17126820 1025193 104539244 136717383 100842509 23031025 37355168 16780877 3186187 101150576 52927323 83894494 68134016 56116384 67288810 25205761 35877144 2...

input:

Interaction has been finished!

output:

1
0
2
1
2
2
2
0
1
2
1
2
0
0
1
1
0
2
2
2
1
2
1
1
2
1
2
0
2
1
1
2
1
2
2
2
0
0
1
1
2
1
2
2
2
2
2
1
0
1
0
2
2
1
2
0
1
0
2
1
1
2
0
0
1
1
1
2
1
0
1
2
0
2
2
2
0
2
0
0
2
2
1
1
1
0
2
0
0
2
2
1
1
0
1
0
2
0
0
1
2
2
2
2
2
2
0
2
2
1
1
2
0
1
2
2
1
0
2
2
1
0
2
2
2
1
1
2
2
0
1
1
2
2
1
2
1
2
1
2
2
2
2
1
1
0
0
2
0
0
...

result:

points 0.8213199790

Test #19:

score: 75.5614
Acceptable Answer
time: 132ms
memory: 15480kb

input:

250000 250000
212557 2865
205598 91456
106547 166169
2385 60328
54909 26698
82002 112166
121929 240217
123410 133417
93989 61456
92642 225604
49143 8681
1263 131585
214794 141276
12589 67655
51160 187118
83743 12235
86483 172453
29872 111146
249757 78807
216189 2378
57530 180918
106038 234952
16366 ...

output:

838860801 11375770 138450012 145795301 6346191 86450323 2105838 11158080 72942213 4725015 628129 10856102 52839413 288254549 11567121 104915638 134850535 112042487 19811665 5533898 5047824 6605330 11075716 7680658 6340510 104915685 105210912 39286502 19557235 15253309 15275540 2097778 20365399 78726...

input:

Interaction has been finished!

output:

1
1
2
1
2
2
2
0
0
2
1
1
2
2
2
0
0
2
1
1
0
0
0
2
0
1
1
2
2
2
1
2
0
1
2
1
2
1
1
0
2
2
2
2
2
0
2
1
1
2
2
1
2
0
1
2
1
2
1
1
2
2
2
0
0
2
2
1
2
2
1
2
1
2
2
0
1
2
2
2
0
0
0
2
2
0
0
2
2
2
2
2
2
1
2
0
2
1
2
2
2
1
2
0
2
0
1
1
2
0
1
2
2
0
2
2
2
2
1
0
0
2
1
1
2
2
2
0
0
2
0
1
1
2
2
2
0
0
1
2
0
0
1
1
2
2
2
2
1
1
...

result:

points 0.8213199790

Test #20:

score: 78.0768
Acceptable Answer
time: 120ms
memory: 16740kb

input:

250000 250000
108989 180679
6618 123314
146792 97095
101695 18624
109138 21259
130176 235020
131970 224224
32023 110376
126943 90247
7024 8229
55250 106561
44259 206501
157785 107293
88446 38793
62937 119441
158397 243678
83221 104131
184687 105512
101778 195126
76695 8559
31678 182822
58730 237755
...

output:

704643073 744303 68109444 67318085 335585329 68152528 175364 450032 299525 772771 647854 785205 572905 56748 118060 42176 235045004 93395 202014 101073641 309768 904112 378602 959614 90557 705415 67657522 101327456 510700 101099296 841743 680983 168141109 67185952 101351347 68923 324277 67777485 202...

input:

Interaction has been finished!

output:

0
2
2
2
0
1
2
0
2
2
1
0
1
1
2
2
0
0
2
1
2
2
1
2
1
0
2
2
2
2
2
2
2
1
2
2
1
2
0
0
2
2
0
2
2
2
2
0
1
0
1
2
2
2
0
2
0
2
0
2
2
2
2
0
1
2
2
0
2
0
2
2
2
0
2
1
2
2
2
0
0
2
2
2
2
0
1
2
0
1
0
2
1
2
2
2
2
2
0
2
2
2
1
2
2
1
2
0
2
1
0
1
2
2
1
1
2
2
1
2
2
2
2
0
1
1
0
2
2
2
2
1
2
2
1
2
2
2
2
2
1
2
0
2
2
2
1
1
2
1
...

result:

points 0.84866114930

Test #21:

score: 0
Stage 1: Program Program Time Limit Exceeded

input:

250000 250000
128536 214028
128536 203182
145589 67326
128536 148506
128536 118881
128536 221940
128536 82743
128536 76287
128536 207959
128536 126237
128536 33353
143121 245162
128536 140279
128536 149583
128536 146645
119187 41695
128536 122057
128536 1126
128536 97289
239043 83867
17254 163707
12...

output:

input:

output:

result:
English 繁體中文 简体中文

伺服器時間: 2024-11-29 18:33:55 | 開源專案