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#83115#3106. Cleaning Pipesxiaowuc1AC ✓409ms96632kbJava114.0kb2023-03-01 05:55:082023-03-01 05:55:26

详细

Test #1:

score: 100
Accepted
time: 48ms
memory: 35872kb

input:

2 7
0 0
2 -1
1 0 10
1 0 -10
1 10 0
1 10 -10
1 10 10
2 -2 3
2 -10 -3

output:

possible

result:

ok single line: 'possible'

Test #2:

score: 0
Accepted
time: 37ms
memory: 35412kb

input:

3 8
0 0
2 -1
-3 2
1 0 10
1 0 -10
1 10 0
1 10 -10
1 10 10
2 -2 3
2 -10 -3
3 10 2

output:

impossible

result:

ok single line: 'impossible'

Test #3:

score: 0
Accepted
time: 57ms
memory: 35336kb

input:

3 3
-1 -1
-1 0
0 1
1 1 1
2 1 0
3 1 0

output:

impossible

result:

ok single line: 'impossible'

Test #4:

score: 0
Accepted
time: 45ms
memory: 35548kb

input:

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

output:

impossible

result:

ok single line: 'impossible'

Test #5:

score: 0
Accepted
time: 71ms
memory: 35856kb

input:

10 20
-888 23
24 485
448 -868
146 98
-627 651
318 -945
-515 793
-961 315
-847 -151
-793 271
1 -709 -129
2 -193 239
3 377 -927
4 -76 -73
5 -890 564
6 617 -985
7 -689 577
8 -777 25
9 -1062 -117
10 -985 259
1 -1128 238
2 282 438
3 549 -695
4 291 -152
5 -749 819
6 275 -1188
7 -798 585
8 -797 261
9 -813 ...

output:

possible

result:

ok single line: 'possible'

Test #6:

score: 0
Accepted
time: 55ms
memory: 35920kb

input:

10 20
-774 141
57 -980
146 797
355 920
-261 897
252 683
-746 -264
-521 219
-584 -539
-3 739
1 -788 399
2 328 -883
3 212 808
4 178 1124
5 30 730
6 188 867
7 -535 -556
8 -327 27
9 -530 -425
10 112 690
1 -721 339
2 12 -1239
3 350 572
4 527 786
5 -318 609
6 67 913
7 -476 -478
8 -742 7
9 -487 -285
10 289...

output:

possible

result:

ok single line: 'possible'

Test #7:

score: 0
Accepted
time: 39ms
memory: 35656kb

input:

10 20
478 858
-975 708
732 -68
646 -381
188 -401
-943 689
793 -245
-389 948
-922 754
369 781
1 735 1071
2 -701 864
3 714 -136
4 815 -654
5 350 -577
6 -991 910
7 847 15
8 -591 735
9 -930 571
10 202 925
1 236 732
2 -822 821
3 951 -14
4 522 -407
5 -80 -343
6 -1000 978
7 764 24
8 -491 953
9 -669 521
10 ...

output:

possible

result:

ok single line: 'possible'

Test #8:

score: 0
Accepted
time: 61ms
memory: 35944kb

input:

10 20
-502 986
773 649
697 766
477 828
-456 337
892 778
513 680
430 656
649 -297
628 -435
1 -447 894
2 907 948
3 789 878
4 725 684
5 -350 270
6 1052 1023
7 745 442
8 648 454
9 508 -298
10 503 -287
1 -759 1040
2 1013 824
3 416 614
4 634 850
5 -359 259
6 742 631
7 643 964
8 634 931
9 498 -393
10 459 -...

output:

impossible

result:

ok single line: 'impossible'

Test #9:

score: 0
Accepted
time: 53ms
memory: 35516kb

input:

10 20
715 -55
-452 -960
-4 -50
889 -457
374 270
551 -131
-198 -109
651 -11
484 -987
680 131
1 600 -47
2 -169 -844
3 134 -171
4 725 -401
5 448 517
6 814 89
7 -284 -5
8 371 53
9 736 -1124
10 586 54
1 504 72
2 -426 -928
3 277 -283
4 972 -562
5 625 36
6 726 57
7 -123 49
8 655 254
9 573 -847
10 454 -5

output:

impossible

result:

ok single line: 'impossible'

Test #10:

score: 0
Accepted
time: 65ms
memory: 35596kb

input:

3 3
0 0
0 2
2 0
1 2 3
2 2 2
3 0 3

output:

impossible

result:

ok single line: 'impossible'

Test #11:

score: 0
Accepted
time: 68ms
memory: 35660kb

input:

10 20
-514 -5
-917 -724
-811 -201
-369 -142
-338 -136
335 -176
-41 -282
-625 72
-384 711
943 -582
1 -669 -15
2 -738 -719
3 -616 83
4 -230 -351
5 -474 -291
6 384 -317
7 90 -205
8 -483 3
9 -118 664
10 1057 -700
1 -347 -267
2 -900 -839
3 -562 88
4 -556 -230
5 -481 -305
6 542 -421
7 81 -196
8 -565 -159
...

output:

impossible

result:

ok single line: 'impossible'

Test #12:

score: 0
Accepted
time: 252ms
memory: 74404kb

input:

1000 1000
-6870 -6594
4549 1441
-3530 -4279
-4956 -262
-9964 3635
9897 776
-405 -4584
-71 -909
8001 761
-979 -1768
5509 -6457
-4755 2299
-6303 2674
-3746 -7734
-6487 -2109
1297 -5744
5698 -3357
-1284 -4153
5585 -7832
5803 112
-9112 1973
7389 2053
7496 -3165
3948 -2681
1903 1849
1744 -7031
5269 -2588...

output:

impossible

result:

ok single line: 'impossible'

Test #13:

score: 0
Accepted
time: 255ms
memory: 74060kb

input:

1000 1000
2656 -7922
7911 -3554
-681 -4908
939 -5191
-7331 -4283
2772 -6100
8932 -7724
-5709 -4953
-522 3239
6626 4243
-6449 3998
-3343 -200
3891 7172
-4207 -6573
-4879 -116
-1686 -5208
-2410 7777
9222 -3775
-2614 6910
-7373 -3487
-3235 -3592
-4964 5399
6799 -7951
5288 -672
9923 -7371
2979 1914
8066...

output:

impossible

result:

ok single line: 'impossible'

Test #14:

score: 0
Accepted
time: 258ms
memory: 68424kb

input:

1000 1000
6058 6680
-5063 -1072
-7940 6245
-8764 -6330
-8638 4839
-5509 522
-1719 -363
-8833 7578
-3588 2174
4446 5931
719 4412
6397 328
-4341 1807
-3854 -5372
-7879 707
-6261 944
9872 4532
777 -1324
-1301 8285
-524 -1635
5239 -3587
2402 319
-5750 -6479
2047 3569
-4148 662
-8573 -7155
3173 2924
-526...

output:

impossible

result:

ok single line: 'impossible'

Test #15:

score: 0
Accepted
time: 206ms
memory: 72620kb

input:

1000 1000
8005 498
4794 -2440
-347 2319
4217 349
-6944 -906
-6276 -1332
7162 1914
-513 3977
-9992 6082
9176 -8606
6435 2096
-9699 -3730
-3266 -975
6842 478
3134 122
-9380 -9561
-2000 -2509
9811 5415
-7884 4005
9451 4028
-7304 -8476
-210 9528
3505 6210
2292 9278
7024 3514
-8038 -2180
4090 -189
5188 -...

output:

possible

result:

ok single line: 'possible'

Test #16:

score: 0
Accepted
time: 253ms
memory: 73028kb

input:

1000 1000
-8218 -1086
5373 -1143
8389 9376
-8934 -9256
-8950 -1760
4587 -6612
-9124 8084
9863 -3946
-1050 6222
-1016 -3260
-1957 7674
-4954 -9913
5467 8873
-2298 -8654
-7782 -7865
1049 8499
-2644 -9648
9728 -7225
-6481 -4255
337 -9205
-5817 -9079
9005 -5075
-2669 -4941
7633 5221
-8039 6281
3956 -703...

output:

possible

result:

ok single line: 'possible'

Test #17:

score: 0
Accepted
time: 253ms
memory: 70432kb

input:

1000 1000
-4921 3646
9228 6523
-9337 -225
4672 -9193
-2514 -7110
-9199 -1960
9286 3870
1729 7160
-9229 -8648
5589 -2755
2353 7084
584 5440
1487 -5978
4747 -1093
8507 3562
-2792 7994
4518 9938
-287 -7212
9947 1533
775 -9263
-1222 -6214
7656 1576
-1263 -5584
-7880 -4262
2983 -492
-7055 4061
-4146 -831...

output:

possible

result:

ok single line: 'possible'

Test #18:

score: 0
Accepted
time: 177ms
memory: 69924kb

input:

100 1000
-3688 4709
743 8501
-7089 -1505
3570 -6441
9706 1131
2825 3512
2182 4608
-6265 7371
-8068 1245
4246 -5731
-9885 8516
9519 -8586
-6658 -1355
-4426 -1054
2325 -8557
2505 -6175
8679 8637
-2868 -6752
-6841 -8410
2721 7055
-3081 9218
3826 -8102
9269 9101
-3302 3913
4534 -8799
6069 -9055
8711 465...

output:

possible

result:

ok single line: 'possible'

Test #19:

score: 0
Accepted
time: 213ms
memory: 68388kb

input:

100 1000
-6385 6240
-1105 -7136
6086 -3516
-2914 7073
1823 -2142
7556 6093
184 7916
1912 2294
2165 1910
-6596 -7346
5528 9723
-2857 -2240
8710 -8815
8328 7040
3233 -7870
4722 -2816
49 3201
9685 -6382
7043 -3865
345 -3228
-7135 -1134
-6865 -5747
6547 -599
7664 5047
7701 -1288
-5213 7420
-4820 -419
76...

output:

possible

result:

ok single line: 'possible'

Test #20:

score: 0
Accepted
time: 238ms
memory: 70588kb

input:

100 1000
-891 -825
4722 -7712
5571 4133
-4898 -9160
3298 -2941
796 1147
3984 -3304
-2993 9233
6139 -5124
-6135 7626
4290 5468
-7706 -2567
-5646 -9258
1945 -2731
7265 -2689
6487 -4652
-6012 -7274
6859 1209
-1599 9560
-3381 8313
-539 -8301
-5252 3767
-647 -6555
-5327 1755
-4267 -8156
7312 -1462
2324 6...

output:

impossible

result:

ok single line: 'impossible'

Test #21:

score: 0
Accepted
time: 56ms
memory: 35876kb

input:

2 3
0 0
0 10
1 5 15
1 2 15
2 10 10

output:

possible

result:

ok single line: 'possible'

Test #22:

score: 0
Accepted
time: 203ms
memory: 71644kb

input:

100 1000
-6785 7223
-1385 -1142
-1474 -5318
-7480 -7056
-9645 5902
2785 1244
-6132 -9932
-475 0
9398 -6196
8732 9058
7779 -3865
-2734 -9223
5274 -286
-3723 -4070
-4391 -2891
-5668 3704
-7438 -1175
-141 -701
-1405 1089
-3009 -1269
6328 -1049
-4629 9776
-3872 6548
-9648 4897
307 -8121
-1986 5437
6214 ...

output:

impossible

result:

ok single line: 'impossible'

Test #23:

score: 0
Accepted
time: 173ms
memory: 71108kb

input:

100 1000
1940 7904
-3835 -9983
3833 9748
-4859 -6531
-6441 -73
-5662 7946
-4810 2444
-2031 2556
9084 -4359
-7592 304
8165 6409
5083 -4030
-7874 8417
-2065 3787
-8290 3481
-2263 -8106
8263 2
-250 255
3724 -1552
8376 4891
2837 3635
-3920 9066
1622 8028
-9979 4049
-9294 706
-6533 -7570
-1600 8871
3640 ...

output:

possible

result:

ok single line: 'possible'

Test #24:

score: 0
Accepted
time: 195ms
memory: 71116kb

input:

100 1000
2187 8857
5109 2668
462 9702
9272 1238
-7244 -6336
7270 -3063
-3826 2498
3584 -396
4157 -5309
1980 3306
5652 -2868
-2011 -8652
-8420 -8006
-5113 -2607
7218 2951
1808 6534
-4445 -4243
-8189 -6731
4508 2369
6033 7435
-9276 7264
-238 3304
9260 -3101
1590 9699
-643 -231
6901 9922
-8729 -4991
-2...

output:

possible

result:

ok single line: 'possible'

Test #25:

score: 0
Accepted
time: 198ms
memory: 71248kb

input:

100 1000
-2542 3474
-1456 2102
183 1597
674 -2973
1855 -7419
9875 -7719
-4144 -571
4386 4207
-8952 7036
7360 1598
4039 -7940
-3980 -5896
-4380 4732
-2173 -3496
-2112 -9231
595 -7132
1322 5346
-6705 5491
8871 -8494
-5913 322
2603 726
6507 -6038
4521 4811
-1800 893
-7509 5569
3981 -4440
-335 2883
-238...

output:

impossible

result:

ok single line: 'impossible'

Test #26:

score: 0
Accepted
time: 189ms
memory: 69972kb

input:

100 1000
-5102 3515
-2889 6896
-7743 303
4710 -6604
7373 2858
-1465 5909
1154 -4147
-2021 -2151
-2456 8175
2588 -3348
3609 -119
8819 5492
-4370 -7704
1258 -8193
5048 9250
-883 9378
6274 9947
250 6228
5976 4883
-2259 -8687
3574 -298
5555 2628
6829 -5271
9256 9886
-3462 -9275
606 -1804
-9960 6499
8795...

output:

impossible

result:

ok single line: 'impossible'

Test #27:

score: 0
Accepted
time: 185ms
memory: 73428kb

input:

100 1000
9172 -3865
-1087 -2326
-5759 -1084
-1333 -5072
-2413 -6637
-8136 -8473
-7839 -756
3021 -4758
-6066 -555
-8752 7871
9261 -7913
-266 189
-2050 -2243
-5034 -1749
-3638 -8574
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4451 -821
4107 -403
2960 -6882
-9003 8046
-2710 1176
6418 9511
-1044 6663
4535 -9648
8792 -3444
...

output:

impossible

result:

ok single line: 'impossible'

Test #28:

score: 0
Accepted
time: 220ms
memory: 73692kb

input:

100 1000
-7909 6497
1902 2572
9366 -9787
7094 7800
-7266 -3835
-4571 -8647
5114 -4475
1303 2808
-1433 -2023
-557 -2162
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-2037 -2924
-698 -1628
-1822 45
-6057 -687
-7838 4441
-2986 -3966
-7401 4064
1864 -3620
-1103 6045
7398 950
2827 678
-6514 -1135
6842 -5870
-1680 -1595
-4056 -7363
-3935...

output:

impossible

result:

ok single line: 'impossible'

Test #29:

score: 0
Accepted
time: 231ms
memory: 74088kb

input:

1000 1000
9174 -1458
-1303 1188
-89 7125
-606 8009
-3175 -8058
1105 -7494
-476 -5064
5524 5556
2285 -3589
3969 567
-6539 -710
-2167 86
-1040 8482
-1073 3441
-3186 9702
8857 -292
-1756 1274
-5384 -8125
-1602 4011
-6396 5223
9674 4709
-8551 -803
-6635 -9306
-1526 5650
826 -7558
-62 4287
5454 7771
-562...

output:

possible

result:

ok single line: 'possible'

Test #30:

score: 0
Accepted
time: 283ms
memory: 74820kb

input:

1000 1000
9174 -1458
-1303 1188
-89 7125
-606 8009
-3175 -8058
1105 -7494
-476 -5064
5524 5556
2285 -3589
3969 567
-6539 -710
-2167 86
-1040 8482
-1073 3441
-3186 9702
8857 -292
-1756 1274
-5384 -8125
-1602 4011
-6396 5223
9674 4709
-8551 -803
-6635 -9306
-1526 5650
826 -7558
-62 4287
5454 7771
-562...

output:

impossible

result:

ok single line: 'impossible'

Test #31:

score: 0
Accepted
time: 257ms
memory: 74932kb

input:

1000 1000
9174 -1458
-1303 1188
-89 7125
-606 8009
-3175 -8058
1105 -7494
-476 -5064
5524 5556
2285 -3589
3969 567
-6539 -710
-2167 86
-1040 8482
-1073 3441
-3186 9702
8857 -292
-1756 1274
-5384 -8125
-1602 4011
-6396 5223
9674 4709
-8551 -803
-6635 -9306
-1526 5650
826 -7558
-62 4287
5454 7771
-562...

output:

possible

result:

ok single line: 'possible'

Test #32:

score: 0
Accepted
time: 231ms
memory: 73864kb

input:

1000 1000
9174 -1458
-1303 1188
-89 7125
-606 8009
-3175 -8058
1105 -7494
-476 -5064
5524 5556
2285 -3589
3969 567
-6539 -710
-2167 86
-1040 8482
-1073 3441
-3186 9702
8857 -292
-1756 1274
-5384 -8125
-1602 4011
-6396 5223
9674 4709
-8551 -803
-6635 -9306
-1526 5650
826 -7558
-62 4287
5454 7771
-562...

output:

impossible

result:

ok single line: 'impossible'

Test #33:

score: 0
Accepted
time: 198ms
memory: 72140kb

input:

50 1000
9174 -1458
-1303 1188
-89 7125
-606 8009
-3175 -8058
1105 -7494
-476 -5064
5524 5556
2285 -3589
3969 567
-6539 -710
-2167 86
-1040 8482
-1073 3441
-3186 9702
8857 -292
-1756 1274
-5384 -8125
-1602 4011
-6396 5223
9674 4709
-8551 -803
-6635 -9306
-1526 5650
826 -7558
-62 4287
5454 7771
-5627 ...

output:

possible

result:

ok single line: 'possible'

Test #34:

score: 0
Accepted
time: 184ms
memory: 72532kb

input:

50 1000
9174 -1458
-1303 1188
-89 7125
-606 8009
-3175 -8058
1105 -7494
-476 -5064
5524 5556
2285 -3589
3969 567
-6539 -710
-2167 86
-1040 8482
-1073 3441
-3186 9702
8857 -292
-1756 1274
-5384 -8125
-1602 4011
-6396 5223
9674 4709
-8551 -803
-6635 -9306
-1526 5650
826 -7558
-62 4287
5454 7771
-5627 ...

output:

impossible

result:

ok single line: 'impossible'

Test #35:

score: 0
Accepted
time: 96ms
memory: 38028kb

input:

1 1000
9174 -1458
1 -8906 -9187
1 -4627 -7986
1 -7270 6474
1 9247 3909
1 4803 6836
1 7542 7361
1 -3651 -8435
1 -3242 8192
1 1640 5366
1 -286 -1059
1 -3269 5137
1 7683 6578
1 495 3692
1 7943 1003
1 -1923 221
1 8311 8079
1 5015 3151
1 -1294 3220
1 2713 566
1 -32 7222
1 -5152 -9675
1 -1701 8319
1 -9090...

output:

possible

result:

ok single line: 'possible'

Test #36:

score: 0
Accepted
time: 159ms
memory: 51660kb

input:

2 1000
9174 -1458
-1303 1188
1 -7034 -5956
1 5563 903
1 745 -1853
2 -1586 2896
1 4372 -3454
1 9504 4118
2 -3029 4957
1 -3572 -7615
2 1270 1518
1 -1036 -7428
1 6193 -2281
2 -4126 8469
2 -2361 4905
1 -7757 -7128
1 -7086 -3423
1 -1726 -2505
2 7306 5199
1 7160 -779
1 -4379 -6058
1 -4293 -9779
1 3400 -86...

output:

possible

result:

ok single line: 'possible'

Test #37:

score: 0
Accepted
time: 182ms
memory: 54272kb

input:

3 1000
9174 -1458
-1303 1188
-89 7125
2 -5286 -6569
3 2060 -6765
2 -2960 -5334
2 631 -8494
3 3909 3914
2 83 -2595
3 -5853 -1679
3 2125 9743
3 -2703 9802
3 -3751 -2987
1 3212 1534
1 7202 483
2 -1764 -23
2 -841 4769
3 5719 -5266
2 -2318 -3519
3 -1363 7873
2 -9378 1528
3 -7849 -9451
3 2848 9717
2 1106 ...

output:

possible

result:

ok single line: 'possible'

Test #38:

score: 0
Accepted
time: 225ms
memory: 53584kb

input:

3 1000
9174 -1458
-1303 1188
-89 7125
3 2103 8207
3 -742 5159
3 -5913 -4684
2 -1957 807
3 7 9320
3 5719 -5266
2 -5286 -6569
3 -5804 8680
3 7305 9041
1 7899 -3706
1 5976 -1037
1 1643 746
3 -1716 9362
3 -7751 1127
3 5228 -4371
3 -7999 -8606
2 1468 689
2 6821 -2486
2 -9433 -8215
2 4011 -6396
3 3868 676...

output:

impossible

result:

ok single line: 'impossible'

Test #39:

score: 0
Accepted
time: 51ms
memory: 35404kb

input:

10 10
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
42 42
1 10000 9999
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3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 -9000 -10000

output:

possible

result:

ok single line: 'possible'

Test #40:

score: 0
Accepted
time: 49ms
memory: 35416kb

input:

10 10
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
42 42
1 10000 9999
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3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 -9000 -9100

output:

possible

result:

ok single line: 'possible'

Test #41:

score: 0
Accepted
time: 50ms
memory: 35672kb

input:

10 10
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
-500 -42
1 10000 9999
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3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 5000 10000

output:

possible

result:

ok single line: 'possible'

Test #42:

score: 0
Accepted
time: 48ms
memory: 36004kb

input:

10 10
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
-42 -42
1 10000 9999
2 9999 -10000
3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 10000 -8000

output:

possible

result:

ok single line: 'possible'

Test #43:

score: 0
Accepted
time: 46ms
memory: 35372kb

input:

11 11
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
-42 -42
9200 9200
1 10000 9999
2 9999 -10000
3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 10000 -8000
11 0 -9800

output:

possible

result:

ok single line: 'possible'

Test #44:

score: 0
Accepted
time: 50ms
memory: 35528kb

input:

12 12
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
-42 -42
9200 9200
5000 -6000
1 10000 9999
2 9999 -10000
3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 10000 -8000
11 0 -9800
12 -9500 0

output:

possible

result:

ok single line: 'possible'

Test #45:

score: 0
Accepted
time: 64ms
memory: 35944kb

input:

12 12
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
-42 -42
9200 9200
5000 -6000
1 10000 9999
2 9999 -10000
3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 10000 -8000
11 0 -9800
12 -10000 0

output:

possible

result:

ok single line: 'possible'

Test #46:

score: 0
Accepted
time: 64ms
memory: 35460kb

input:

13 14
-10000 10000
10000 10000
10000 -10000
-10000 -10000
-9999 9997
9890 9500
9900 -9890
-9400 -9200
-9500 8900
-42 -42
9200 9200
5000 -6000
0 5000
1 10000 9999
2 9999 -10000
3 -10000 -9999
4 -9998 9997
5 9900 9000
6 9890 -9900
7 -9500 -9000
8 -9400 9000
9 0 0
10 10000 -8000
11 0 -9800
12 -10000 0
...

output:

impossible

result:

ok single line: 'impossible'

Test #47:

score: 0
Accepted
time: 50ms
memory: 35880kb

input:

1 1
23 23
1 4711 42

output:

possible

result:

ok single line: 'possible'

Test #48:

score: 0
Accepted
time: 56ms
memory: 35900kb

input:

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

output:

possible

result:

ok single line: 'possible'

Test #49:

score: 0
Accepted
time: 57ms
memory: 36356kb

input:

100 133
-9538 9410
-1943 -4638
8716 1947
1236 -2799
9816 -5450
-9924 1360
-9439 1188
-4505 1792
-6195 -4253
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2127 1749
-358 -2151
1527 3220
2631 -7178
-1815 -1659
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-5759 -3099
-2197 -2123
5589 -5943
1597 -2121
9672 6150
8250 7092
-3448 9829
-7704 8648
-88...

output:

possible

result:

ok single line: 'possible'

Test #50:

score: 0
Accepted
time: 80ms
memory: 37040kb

input:

100 130
-2542 3474
-1456 2102
183 1597
674 -2973
1855 -7419
9875 -7719
-4144 -571
4386 4207
-8952 7036
7360 1598
4039 -7940
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-4380 4732
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595 -7132
1322 5346
-6705 5491
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-5913 322
2603 726
6507 -6038
4521 4811
-1800 893
-7509 5569
3981 -4440
-335 2883
-2385...

output:

possible

result:

ok single line: 'possible'

Test #51:

score: 0
Accepted
time: 294ms
memory: 94700kb

input:

1000 1000
-10000 0
-10000 1
-10000 2
-10000 3
-10000 4
-10000 5
-10000 6
-10000 7
-10000 8
-10000 9
-10000 10
-10000 11
-10000 12
-10000 13
-10000 14
-10000 15
-10000 16
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-10000 18
-10000 19
-10000 20
-10000 21
-10000 22
-10000 23
-10000 24
-10000 25
-10000 26
-10000 27
-10000 28
-10000 29
...

output:

impossible

result:

ok single line: 'impossible'

Test #52:

score: 0
Accepted
time: 372ms
memory: 88320kb

input:

1000 1000
-10000 0
-10000 1
-10000 2
-10000 3
-10000 4
-10000 5
-10000 6
-10000 7
-10000 8
-10000 9
-10000 10
-10000 11
-10000 12
-10000 13
-10000 14
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-10000 16
-10000 17
-10000 18
-10000 19
-10000 20
-10000 21
-10000 22
-10000 23
-10000 24
-10000 25
-10000 26
-10000 27
-10000 28
-10000 29
...

output:

possible

result:

ok single line: 'possible'

Test #53:

score: 0
Accepted
time: 409ms
memory: 96632kb

input:

1000 1000
-10000 0
-10000 1
-10000 2
-10000 3
-10000 4
-10000 5
-10000 6
-10000 7
-10000 8
-10000 9
-10000 10
-10000 11
-10000 12
-10000 13
-10000 14
-10000 15
-10000 16
-10000 17
-10000 18
-10000 19
-10000 20
-10000 21
-10000 22
-10000 23
-10000 24
-10000 25
-10000 26
-10000 27
-10000 28
-10000 29
...

output:

impossible

result:

ok single line: 'impossible'

Test #54:

score: 0
Accepted
time: 59ms
memory: 35736kb

input:

5 5
0 50
100 50
25 0
75 0
0 25
1 50 50
2 50 50
3 25 100
4 75 100
5 100 25

output:

impossible

result:

ok single line: 'impossible'