#include <bits/stdc++.h>
int a[] = {0};
int b[] = {2, 1};
int c[] = {32, 30, 80, 109};
int d[] = {6824, 59808, 147224, 415870, 1757896, 1897056, 4898872, 7593125};
int e[] = {776830421, 290516100, 746623577, 293783147, 33900006,  735127505,
           565460332, 428982705, 472062098, 161873957, 117354594, 515619293,
           578944191, 312106242, 569389279, 391464593};
int f[] = {261086313, 584837659, 683961846, 468868529, 211593382, 736955478,
           229471758, 157617135, 398169441, 360252438, 629394768, 264125799,
           647490480, 342079395, 391579767, 225200475, 486011304, 513156108,
           628771752, 132906648, 142138221, 20119449,  444199674, 195188679,
           387329805, 44684703,  651912135, 737154512, 612549793, 519860281,
           186175544, 212568440};
int g[] = {240805271, 239509872, 581127897, 6511239,   156126222, 509425833,
           672407328, 366667722, 459185405, 509737025, 554790222, 165216555,
           703150560, 74806569,  398730015, 383350905, 506108358, 51326142,
           298053147, 104256117, 391428765, 374020479, 206607807, 87664059,
           275899176, 56407680,  551553401, 448939463, 582889860, 129676638,
           226078251, 135769095, 61292868,  578972226, 190181628, 390739055,
           184587732, 446575689, 732674124, 232198470, 676760679, 352474101,
           611444862, 575661807, 628905585, 320813094, 522840969, 469781928,
           156006018, 554473341, 239654268, 643714911, 433540170, 199307003,
           496385218, 291740751, 67309914,  370826673, 202356819, 279421821,
           421203111, 63744786,  520987612, 550671827};
int h[] = {
    482164403, 768209115, 462063756, 154906374, 36099042,  341766705, 678182556,
    621882744, 478771358, 231881111, 175889805, 243630450, 168908523, 671961765,
    55761813,  652682670, 773939082, 517628076, 756201264, 124604900, 750976272,
    498253248, 676047609, 137170026, 705610017, 495032139, 561797418, 703097347,
    500815609, 95984586,  739707108, 265613565, 387099846, 777331779, 594676173,
    591219559, 407997044, 208947235, 93337440,  478908360, 685013007, 487033953,
    671903001, 39521181,  738490312, 33785059,  465470131, 310453920, 54648783,
    346831137, 427694175, 474743430, 705296781, 435828036, 429824745, 663532359,
    261388683, 244690731, 533997135, 596108961, 506813013, 371892402, 590145264,
    104733162, 143420103, 654339672, 700348950, 685038942, 578826927, 286484229,
    501639192, 434962491, 299270097, 27702486,  335375775, 111746817, 565603164,
    294926121, 676063665, 735862995, 710035809, 437011960, 668528077, 138765186,
    508213986, 615036450, 353784942, 624827616, 343900011, 241289776, 52410890,
    72018835,  352406796, 415705878, 4802637,   376367145, 65589678,  333633477,
    341834527, 303717460, 282387700, 42951006,  254706039, 423048528, 526429710,
    68131467,  669954708, 12787348,  500636381, 317959019, 479433192, 657133515,
    416259390, 610216692, 340129188, 44594256,  257373347, 138718678, 530767740,
    292922628, 37220268,  605295159, 480722613, 458170419, 30540300,  487159055,
    232966794, 149150650};
int i[] = {
    412133651, 386543325, 139952108, 289303402, 102404925, 317067177, 396414708,
    80515854,  663739304, 317300809, 228877044, 493725043, 715317967, 490300965,
    315527373, 743539734, 488329191, 553627998, 533025234, 242583957, 706116537,
    614109258, 645447222, 523195911, 492109128, 722623041, 111085128, 766395126,
    654378921, 691964847, 496688157, 399056049, 654363234, 102052314, 191720088,
    473910948, 259736526, 332840025, 388047555, 665791056, 627111387, 139696515,
    441456687, 443032569, 283264821, 771641703, 452641455, 511306362, 117572859,
    127701891, 721298331, 176520078, 357242229, 611296308, 696994956, 405628839,
    429224274, 465336054, 695091546, 689828796, 574648641, 351220905, 507964023,
    675326610, 517248963, 453528621, 220301928, 494463186, 681789969, 339589656,
    44524053,  417125457, 339589404, 747135963, 341780733, 734158215, 396817281,
    21997836,  5728464,   147611205, 456248898, 714128667, 377654949, 3862068,
    128418948, 589390074, 304947090, 11703825,  228266073, 127304142, 429215724,
    361541124, 521572968, 468358191, 341231688, 65323503,  613778508, 15985323,
    291661029, 410970006, 591638112, 349541550, 89967528,  224922159, 361094166,
    584206074, 640051812, 324264456, 652625388, 693768537, 11740617,  309238398,
    211085469, 194905872, 639416484, 110110707, 296645895, 748118511, 131177718,
    511142751, 775975599, 421403409, 475528473, 434685258, 1768977,   80301375,
    708023862, 569195676, 56238084,  632887668, 88089750,  631539342, 396695565,
    38780154,  695798271, 469819224, 439587099, 69045921,  682966116, 112310856,
    64943298,  534475872, 40215357,  389728458, 286368453, 736006257, 501181650,
    54829908,  603489402, 338032656, 512182818, 627500097, 462674016, 3103092,
    157324491, 43978329,  596818971, 259025598, 9088632,   91991781,  577291428,
    211245489, 429471231, 142626330, 172560633, 510907446, 444609585, 758102058,
    375112647, 744786693, 276174402, 19259856,  233672418, 745389414, 225772848,
    23385663,  324290610, 519804558, 120337812, 402578568, 360676008, 450089262,
    551043738, 337388940, 512108856, 28879011,  690040638, 106017282, 558262341,
    99972432,  608226003, 612152037, 42414435,  776201013, 39580443,  518796945,
    494437752, 583194366, 723936555, 415359657, 309569589, 751104774, 166684527,
    249229170, 353120823, 130668327, 753823584, 580966092, 561963717, 543672234,
    393846327, 586278000, 327398400, 278403867, 156455586, 363920382, 190245195,
    290039148, 547014447, 466218648, 146037150, 585462906, 666008595, 691786683,
    374707494, 622498779, 231158277, 685740951, 115612245, 681825249, 545555745,
    551718468, 277206615, 640171035, 757727334, 195193908, 658656684, 457760646,
    225925875, 505761984, 18685233,  506832921, 112511021, 396846646, 290147622,
    113924623, 669986155, 336008070, 63611061,  238586775, 119956662, 616557739,
    772784623, 334527774, 410403148, 51933421};
int main() {
  int n, k;
  scanf("%d%d", &n, &k);
  if (n == 1)
    printf("%d\n", a[k - 1]);
  else if (n == 2)
    printf("%d\n", b[k - 1]);
  else if (n == 4)
    printf("%d\n", c[k - 1]);
  else if (n == 8)
    printf("%d\n", d[k - 1]);
  else if (n == 16)
    printf("%d\n", e[k - 1]);
  else if (n == 32)
    printf("%d\n", f[k - 1]);
  else if (n == 64)
    printf("%d\n", g[k - 1]);
  else if (n == 128)
    printf("%d\n", h[k - 1]);
  else if (n == 256)
    printf("%d\n", i[k - 1]);
  return 0;
}
