# https://w...content-available-to-author-only...k.com/challenges/mini-max-sum
import sys
sys.setrecursionlimit(100000)
 
def simpleArraySum(lst, idx):
    if len(lst) == idx:
        return 0
    return lst[idx] + simpleArraySum(lst, idx+1)
# a = '456 124 752 746 782 492 741 171 752 295 2 56 725 961 135 654 697 328 112 992 922 816 519 997 751 268 378 276 209 842 805 348 587 105 61 449 590 616 442 347 665 231 429 721 145 213 645 8 846 211 586 738 967 903 392 847 240 916 594 478 195 443 914 921 285 272 449 32 217 95 765 830 340 279 949 32 591 563 458 19 963 105 784 548 229 62 474 331 639 545 923 513 116 573 375 43 345 314 426 915 589 928 72 886 625 737 552 790 527 11 223 312 831 879 809 616 712 486 546 788 572 717 806 497 746 382 55 871 733 956 817 598 716 435 958 767 945 786 49 276 175 190 743 111 503 470 893 163 113 702 637 939 207 892 441 450 89 4 494 410 150 881 808 274 361 924 597 321 957 639 779 352 770 770 542 380 279 633 438 580 218 1 710 245 92 710 363 350 586 77 412 350 242 930 547 567 102 310 583 744 540 881 450 494 526 290 456 152 445 401 457 453 963 443 279 132 565 915 833 392 766 146 193 458 262 121 833 630 440 935 502 287 712 710 39 720 349 444 711 143 151 459 333 796 485 326 503 196 747 510 147 898 135 383 643 633 458 102 602 915 943 652 525 479 118 983 498 399 477 889 835 46 376 716 357 874 252 162 7 658 612 385 40 458 493 551 920 203 832 507 221 44 660 157 880 709 612 931 115 538 556 181 883 936 943 190 411 887 726 557 407 424 980 235 359 912 527 423 569 584 96 708 518 754 204 26 425 667 178 188 922 188 506 95 781 244 355 363 685 48 795 132 377 22 232 505 5 89 696 713 589 752 614 267 915 241 170 290 224 214 833 979 293 11 343 345 64 102 603 462 351 791 12 484 307 511 601 39 749 252 179 33 377 224 848 243 1 797 189 828 369 851 152 333 182 424 579 817 876 960 196 336 725 404 763 610 54 938 563 954 755 941 603 489 570 412 213 149 535 36 50 842 538 946 101 33 272 318 524 957 496 213 312 388 633 997 477 753 482 21 866 827 995 575 961 626 134 394 239 236 597 851 787 108 973 687 3 497 408 86 769 674 804 47 593 444 369 292 76 794 481 226 907 659 716 726 290 326 219 989 711 175 112 265 870 391 34 946 687 549 318 735 32 388 792 100 916 24 423 868 604 826 532 952 889 243 161 759 549 915 752 800 849 301 785 318 121 469 999 334 767 790 906 917 844 814 169 467 820 166 797 160 547 155 464 10 262 556 567 383 424 166 109 972 429 948 921 36 801 303 44 680 643 309 426 193 919 847 699 362 865 989 152 362 86 420 41 82 832 506 70 873 366 597 170 108 813 875 709 795 560 459 700 591 778 973 568 235 974 553 284 423 763 275 944 536 886 875 240 510 188 194 534 696 357 218 173 866 99 696 387 651 442 294 366 735 492 724 277 808 109 285 946 716 789 887 969 223 406 742 378 850 199 83 755 966 9 515 942 892 307 381 583 263 58 396 304 342 974 959 194 135 115 678 910 778 681 873 95 559 91 532 175 22 957 753 231 459 819 998 716 27 231 167 550 687 256 222 528 684 309 195 661 28 656 458 241 826 284 864 186 14 877 523 998 775 95 744 786 198 543 751 317 40 34 900 855 399 902 853 417 886 102 454 991 79 967 90 814 374 806 37 749 666 336 935 19 883 457 174 355 888 740 4 240 53 932 409 660 763 990 365 938 582 186 967 417 102 273 277 196 394 690 832 350 65 181 612 914 663 252 950 892 449 239 889 388 246 490 226 554 237 513 888 22 215 729 379 48 235 191 123 554 794 789 745 941 392 387 109 908 275 365 198 823 270 119 885 777 727 51 389 707 465 739 196 285 842 66 525 37 927 251 238 230 543 162 84 635 166 933 692 104 348 600 23 525 246 160 250 845 996 250 429 744 743 160 71 175 125 535 322 205 955 393 153 764 784 352 902 987 254 948 428 216 927 744 968 697 622 168 262 109 544 299 283 998 323 450 594 235 924 984 183 365 344 164 917 400 273 64 285 402 815 175 47 665 600 211 609 395 540 901 752 667 236 581 943 122 666 752 79 782 838 423 545 409 821 164 133 471 333 76 474 747 264 30 940 29 670 814 362 179 200 746 840 995 75 147 534 223 818 711 641 486 892 94 429 784 775 839 165 745 90 473 219 172 809 672 667 827 620 586 392 121 186 260 881 293 579 492 211 880 991 771 853 122 111 509 536 555 69 296 579 498 545 81 350 25 675 894 322 183 333 984 214 902 829 744 36 707 624 236 850 380 519 915 218 15 685'
a = input()
ar = list(map(int, a.split()))
# idx = 0
print(simpleArraySum(ar, 0))
 

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