GCD Again

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Problem

Input :
T
N1
a1 a2 .... aN1
N2
a1 a2 .... aN2
..
..
NT
a1 a2 .... aNT

Output:
gcd(a1,a2,...,aN1)
gcd(a1,a2,...,aN2)
..
..
gcd(a1,a2,...,aNT)

Options

now post-mortem time, all source codes will be revealed

Sample input:_

5
1
10
5
2 4 6 8 10
6
1 2 4 5 6 7
10
10 20 30 40 50 60 70 80 90 100
8
1240 1241132 52534512 120 312310 4140 13110 14130

Sample output:

10
2
1
10
2

Sample input:_

50
4
887 778 916 794
6
387 493 650 422 363 28
1
60
4
927 541 427 173
7
212 369 568 430 783 531 863
4
68 136 930 803
3
59 70 168
4
457 12 43 230
4
422 920 785 538
9
325 316 371 414 527 92 981 957 874
3
171 997 282
6
926 85 328 337 506 847
10
314 858 125 896 583 546 815 368 435 365
4
751 88 809 277
9
789 585 404 652 755 400 933 61 677
9
740 13 227 587 95 540 796 571 435
9
468 602 98 903 318 493 653 757 302
1
287
2
866 690
5
620 441 730 32 118
8
772 482 676 710 928 568 857 498
4
587 966 307 684
10
625 529 872 733 830 504 20 271 369 709
6
341 150 797 724 619 246
7
452 922 556 380 489 765 229
2
351 194
1
35
5
125 915 988 857 744
2
228 366
10
937 433 552 438 229 276 408 475 122 859
6
30 238 236 794 819 429
4
12 929 530 777
5
444 764 614 539 607
1
905
9
129 689 370 918 918 997 325 744 471
4
491 500 773 726
5
591 506 140 955 787
10
83 543 465 198 508 356 805 349 612 623
9
300 344 747 569 341 423 312 811 606
2
662 731
9
306 321 737 445 627 523 466 709 417
3
259 925 638
3
625 601 37
3
900 380 551
9
72 974 132 882 931 934 895 661 164
10
982 900 997 960 774 814 669 191 96 927
7
85 341 91 685 377 543 937
8
446 757 180 419 888 413 349 173
10
10 337 211 343 588 207 302 714 373 322
6
820 600 722 905 940 812

Sample output:

1
1
60
1
1
1
1
1
1
1
1
1
1
1
1
1
1
287
2
1
1
1
1
1
1
1
35
1
6
1
1
1
1
905
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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