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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
#733953#2584. 反回文串propane100 ✓663ms9544kbC++204.4kb2024-11-10 22:22:442024-11-10 22:22:45

Judging History

你现在查看的是最新测评结果

  • [2024-11-10 22:22:45]
  • 评测
  • 测评结果:100
  • 用时:663ms
  • 内存:9544kb
  • [2024-11-10 22:22:44]
  • 提交

answer

#include<iostream>
#include<cstring>
#include<vector>
#include<random>
#include<map>
#include<unordered_map>
#include<algorithm>
using namespace std;
using LL = long long;
const int s = 9;
// n < 2^78
const LL p[9] = {2, 3, 5, 7, 11, 13, 17, 19, 23};
mt19937_64 rnd(random_device{}());

LL mul(LL a, LL b, LL p){
    // return __int128(a) * b % p;
    a %= p, b %= p;
    LL c = (long double)a * b / p;
    LL ans = a * b - c * p;
    if (ans < 0)
        ans += p;
    else if (ans >= p)
        ans -= p;
    return ans;
}

LL qpow(LL a, LL n, LL p){
    LL ans = 1;
    a %= p;
    while (n){
        if (n & 1) ans = mul(ans, a, p);
        a = mul(a, a, p);
        n >>= 1;
    }
    return ans;
}

bool check(LL a, LL n, LL x, LL t){
    LL ret = qpow(a, x, n);
    LL last = ret;
    for (int i = 1; i <= t; i++){
        ret = mul(ret, ret, n);
        if (ret == 1 && last != 1 && last != n - 1)
            return true;
        last = ret;
    }
    if (ret != 1) return true;
    else return false;
}

bool Miller_Rabin(LL n){
    if (n < 2) return false;
    for(auto x : p) if (n == x) return true;
    if ((n & 1) == 0) return false;

    LL x = n - 1;
    LL t = 0;
    while ((x & 1) == 0){
        x >>= 1;
        t++;
    }

    for (int i = 0; i < s; i++){
        // LL a = uniform_int_distribution<LL>(1, n - 1)(rnd);
        // if (check(a, n, x, t))
        if (check(p[i], n, x, t)) return false;
    }
    return true;
}


LL Pollard_rho(LL x){
    LL s = 0, t = 0, c = uniform_int_distribution<LL>(1, x - 1)(rnd);
    LL step = 0, goal = 1;
    LL val = 1;
    for (goal = 1;; goal <<= 1, s = t, val = 1){
        for (step = 1; step <= goal; ++step){
            t = (mul(t, t, x) + c) % x;
            val = mul(val, abs(t - s), x);
            if ((step % 127) == 0){
                LL d = __gcd(val, x);
                if (d > 1)
                    return d;
            }
        }
        LL d = __gcd(val, x);
        if (d > 1) return d;
    }
}
LL fac[200], tot;

void findfac(LL n){
    if (n == 1) return;
    if (Miller_Rabin(n)){
        fac[++tot] = n;
        return;
    }
    LL p = n;
    while (p >= n) p = Pollard_rho(n);
    while (n % p == 0) n /= p;
    findfac(n);
    findfac(p);
}

void dfs(int u, LL val, const vector<pair<LL, int> > &pri, vector<LL> &f){
   if (u == pri.size()){
       f.push_back(val);
       return;
   }
   int c = pri[u].second;
   for(int i = 0; i <= c; i++){
       dfs(u + 1, val, pri, f);
       val *= pri[u].first;
   }
}

auto go_fac(LL n){ 
   tot = 0;
   if (n > 1) findfac(n);     
   map<LL, int> mp;
   vector<pair<LL, int> > pri;
   for(int i = 1; i <= tot; i++){
       if (mp.contains(fac[i])) continue;
       int c = 0;
       while(n % fac[i] == 0) c += 1, n /= fac[i];
       mp[fac[i]] = c;
   }
   for(auto x : mp) pri.push_back(x);
   vector<LL> f;
   dfs(0, 1, pri, f);
   sort(f.begin(), f.end());
   return make_pair(f, pri);
}

LL qpow2(LL a, LL b, LL p){
    a %= p;
    LL ans = 1;
    while(b){
        if (b & 1) ans = ans * a % p;
        b >>= 1;
        a = a * a % p;
    }
    return ans;
}

int main(){

#ifdef LOCAL
    freopen("data.in", "r", stdin);
    freopen("data.out", "w", stdout);
#endif

    cin.tie(0);
    cout.tie(0);
    ios::sync_with_stdio(0);

    int T;
    cin >> T;
    while(T--){
        LL n, m, p;
        cin >> n >> m >> p;
        auto [factor, primes] = go_fac(n);
        const int s = factor.size();
        
        unordered_map<LL, int> mp;
        for(int i = 0; i < s; i++){
            mp[factor[i]] = i;
        }

        auto solve = [&](LL len){
            LL cnt = n / len;
            if (cnt % 2 == 0) return qpow2(m, len, p);
            return qpow2(m, (len + 1) / 2, p);
        };

        vector<LL> f(s);
        for(int i = 0; i < s; i++){
            f[i] = solve(factor[i]);
        }
        for(auto [pri, _] : primes){
            for(int i = s - 1; i >= 0; i--){
                if (factor[i] % pri == 0){
                    f[i] -= f[mp[factor[i] / pri]];
                    if (f[i] < 0) f[i] += p;
                }
            }
        }
        LL ans = 0;
        for(int i = 0; i < s; i++){
            ans += f[i] * (factor[i] % p) % p;
        }
        cout << ans % p << '\n';
    }

}

詳細信息


Pretests


Final Tests

Test #1:

score: 3
Accepted
time: 8ms
memory: 3996kb

input:

10
9311702400 2063322107 1032035101
9311702400 3847844404 1014424217
9311702400 6992683534 1067435323
9311702400 1356819643 1024817347
9311702400 6944668829 1042812553
9311702400 9162670852 1003177793
9311702400 6567188538 1062813337
9311702400 3910301217 1018910293
9311702400 2463242636 1018694167
...

output:

618961590
28597316
1016219343
977847638
108994801
100559666
694084378
492868358
336126742
176095716

result:

ok 10 lines

Test #2:

score: 3
Accepted
time: 8ms
memory: 3720kb

input:

10
8821612800 1108326819 1054253897
8380532160 1267663274 1043024581
8821612800 3176934458 1071245977
9311702400 6481433485 1000759783
8821612800 758922381 1073365919
8380532160 166822173 1001828119
9311702400 7367823578 1015387267
6983776800 1646145481 1030885259
8821612800 3684362555 1007309749
69...

output:

391537248
1030932075
854834302
459335922
896784901
911577797
674524325
392648220
672664689
911456800

result:

ok 10 lines

Test #3:

score: 3
Accepted
time: 7ms
memory: 3696kb

input:

10
5587021440 2127415058 1022963561
8729721000 7659635137 1016643371
7351344000 5657416354 1061115347
8380532160 5792620049 1014814861
7351344000 4242769610 1017904543
5587021440 741231880 1030997497
8031343320 1974187557 1050041869
7351344000 582269195 1046561353
7351344000 5748555565 1019161603
77...

output:

237048366
629142631
260108559
841948025
191823031
162599190
64802834
814233601
189247127
961272597

result:

ok 10 lines

Test #4:

score: 3
Accepted
time: 4ms
memory: 3628kb

input:

10
6469693230 6253588187 1032035101
6469693230 3731448124 1014424217
6469693230 2724819934 1067435323
6469693230 5537386033 1024817347
6469693230 3171489419 1042812553
6469693230 2828773282 1003177793
6469693230 3191696418 1062813337
6469693230 719103207 1018910293
6469693230 513604946 1018694167
64...

output:

938630371
649086455
941467580
785494700
357076968
66986318
592587781
440144505
347253939
264375771

result:

ok 10 lines

Test #5:

score: 3
Accepted
time: 6ms
memory: 3756kb

input:

10
6692786100 1184903319 1054253897
7138971840 6233904554 1043024581
6692786100 2656214258 1071245977
6469693230 2165071435 1000759783
6692786100 1953515781 1073365919
7138971840 2649942813 1001828119
6469693230 2585876408 1015387267
8031343320 1646145481 1030885259
6692786100 2382562055 1007309749
...

output:

362430310
584760322
869953319
276629173
646549222
879297585
384496639
889650008
891113530
71351606

result:

ok 10 lines

Test #6:

score: 3
Accepted
time: 5ms
memory: 3944kb

input:

10
892371480 808257218 1022963561
2677114440 210273217 1016643371
1338557220 1099583074 1061115347
7138971840 2688719249 1014814861
1338557220 217908770 1017904543
892371480 702433120 1030997497
1784742960 1081816077 1050041869
1338557220 211638935 1046561353
1338557220 841533445 1019161603
35694859...

output:

898680129
155530895
328828577
270244294
651496839
244787553
34900610
479462222
353920192
242259038

result:

ok 10 lines

Test #7:

score: 3
Accepted
time: 4ms
memory: 3728kb

input:

10
6469693230 3833466565 1059357283
6469693230 754927365 1036136159
6469693230 2603192085 1073567071
6469693230 4639206992 1068796243
6469693230 5517015600 1041394999
6469693230 3106392852 1015301891
6469693230 4695615325 1000386287
6469693230 2092246885 1055492153
6469693230 889003093 1014212359
64...

output:

788590260
491779719
689403583
53722625
528848033
388192896
987484818
891368409
178298076
664386522

result:

ok 10 lines

Test #8:

score: 3
Accepted
time: 7ms
memory: 3772kb

input:

10
6692786100 3771774526 1028900737
6692786100 6446972990 1002463597
6692786100 3622542947 1055976967
7138971840 4763520839 1022275453
7138971840 3860802666 1053854443
7138971840 4210388874 1049774177
6692786100 4308388670 1034920309
7138971840 4160615721 1030384631
7138971840 1025055051 1073735731
...

output:

258209706
955333108
145755558
4472599
691663194
85925478
632174667
301517080
1025049977
566245998

result:

ok 10 lines

Test #9:

score: 3
Accepted
time: 6ms
memory: 3980kb

input:

10
5354228880 3994707641 1050182537
892371480 431984969 1059422839
5354228880 4963791513 1029557359
892371480 294323989 1030188781
3569485920 1712959161 1065566561
892371480 385935628 1041335231
2677114440 1536725174 1071565279
892371480 738654189 1023834521
5354228880 4834381361 1067648243
80313433...

output:

769578319
245408447
363380756
145407027
690436473
437720110
849793084
484508795
891127810
808075938

result:

ok 10 lines

Test #10:

score: 3
Accepted
time: 0ms
memory: 3524kb

input:

10
7979869234 880839352 1035297457
8978314027 7725687764 1010851649
6003473974 3614058927 1065086513
8093088763 558240262 1036101541
7514563163 4488380730 1024457293
8987295623 1665299298 1050362507
6725389078 6724791537 1066818989
6694198723 5223088598 1023481961
9302162851 1649517328 1053299347
71...

output:

637682663
411426186
798331661
1021488669
191534605
218895374
714845656
838599880
413147483
759261190

result:

ok 10 lines

Test #11:

score: 3
Accepted
time: 77ms
memory: 4840kb

input:

10
97821761637600 65704306750166 1046841041
97821761637600 59463780551379 1010287783
97821761637600 7149419822967 1001388403
97821761637600 78654751729995 1017108451
97821761637600 63496010671264 1068952721
97821761637600 94997930077494 1036598287
97821761637600 90164458929349 1069966747
97821761637...

output:

937975310
584792240
231594977
989139483
276771022
503389932
846237376
161147283
961859777
724963376

result:

ok 10 lines

Test #12:

score: 3
Accepted
time: 73ms
memory: 4580kb

input:

10
83847224260800 65393073767891 1008804857
93163582512000 59924705614375 1008420961
83847224260800 17416796259944 1022373137
97821761637600 82478701012930 1051034311
83847224260800 5858773437789 1051518067
93163582512000 39422697574754 1062876083
97821761637600 38428821290002 1041057107
93163582512...

output:

56184649
596420001
494650147
90036534
374621716
421195622
687855255
187265420
224915504
688864198

result:

ok 10 lines

Test #13:

score: 3
Accepted
time: 65ms
memory: 4568kb

input:

10
86952677011200 31235848972059 1049970937
86642131736160 28251471830580 1016834059
80955940665600 6124775121092 1065935653
86642131736160 12615181180615 1004490881
93163582512000 81931479686275 1008289823
65214507758400 8862771921575 1004938801
86952677011200 14455900391733 1037240747
989461497024...

output:

270703194
90018264
843520812
583177614
66525787
33478275
380053450
791995644
196152868
293333471

result:

ok 10 lines

Test #14:

score: 3
Accepted
time: 57ms
memory: 4332kb

input:

10
89048857617720 57552493280366 1046841041
89048857617720 5584175331939 1010287783
89048857617720 18794867636967 1001388403
89048857617720 19961694747435 1017108451
89048857617720 67300190290504 1068952721
89048857617720 83507754901014 1036598287
89048857617720 72230469295789 1069966747
89048857617...

output:

285162165
992920507
613012802
511614681
1025574201
923288434
797130041
466760148
878381276
50499538

result:

ok 10 lines

Test #15:

score: 3
Accepted
time: 48ms
memory: 4304kb

input:

10
29682952539240 12031044006851 1008804857
59365905078480 28921935656215 1008420961
29682952539240 8799164877584 1022373137
89048857617720 87680334369850 1051034311
29682952539240 8317256865189 1051518067
59365905078480 38439304203794 1062876083
89048857617720 33537733208122 1041057107
593659050784...

output:

632625938
622664420
154768854
88437443
620002944
387993011
648216718
979385570
370715311
1039138043

result:

ok 10 lines

Test #16:

score: 3
Accepted
time: 54ms
memory: 4492kb

input:

10
96269035262400 71606734727259 1049970937
77015228209920 47505278883060 1016834059
86642131736160 77443103802692 1065935653
77015228209920 31868988233095 1004490881
59365905078480 5433826934755 1008289823
14841476269620 6249015856655 1004938801
96269035262400 14455900391733 1037240747
742073813481...

output:

683797105
991850589
115872044
364381822
499017184
36862841
469104118
182955049
831957097
843215726

result:

ok 10 lines

Test #17:

score: 3
Accepted
time: 54ms
memory: 4624kb

input:

10
89048857617720 59723364969244 1038174637
89048857617720 4324272870644 1073271281
89048857617720 31842282833961 1030927823
89048857617720 4236254270692 1040321327
89048857617720 75440686804380 1051681867
89048857617720 13202781823767 1045381861
89048857617720 8887626540892 1001900093
8904885761772...

output:

479917539
762627203
56790269
358922414
273147925
223722863
360109472
975975659
719119603
111015222

result:

ok 10 lines

Test #18:

score: 3
Accepted
time: 54ms
memory: 4316kb

input:

10
59365905078480 34450079405369 1012341877
59365905078480 46760618169023 1003287847
59365905078480 51289992595259 1040994763
89048857617720 79105592669341 1057715303
89048857617720 6170835681130 1045728847
89048857617720 60666028852502 1046728999
59365905078480 10515727173552 1020354001
89048857617...

output:

817546647
962470742
798730759
119276831
494599677
19851510
905439195
839053358
345307298
281588296

result:

ok 10 lines

Test #19:

score: 3
Accepted
time: 48ms
memory: 4392kb

input:

10
44524428808860 25396419053547 1039485857
59365905078480 23800715431124 1011919663
44524428808860 38594252365929 1068321997
59365905078480 47553672393134 1022517227
29682952539240 4126110370920 1073036683
89048857617720 84607210887856 1010508133
89048857617720 35379350268090 1032317971
44524428808...

output:

274715926
252258875
512398159
760247695
443523502
1009975639
436167870
613637989
460598323
394586949

result:

ok 10 lines

Test #20:

score: 3
Accepted
time: 40ms
memory: 4536kb

input:

10
14841476269620 13090676589743 1012553497
14841476269620 264453710949 1038849001
59365905078480 17627230584068 1056555481
29682952539240 10091814009426 1017716317
96269035262400 94345568750137 1052040307
29682952539240 2727262057754 1004833033
14841476269620 8169685928294 1053142921
77015228209920...

output:

582486331
553917379
78378867
231359269
630052741
811694173
880163209
210735871
592990019
476730798

result:

ok 10 lines

Test #21:

score: 3
Accepted
time: 663ms
memory: 9544kb

input:

10
897612484786617600 284495640150868270 1068847981
897612484786617600 335478391619138595 1016494901
897612484786617600 13834456571793948 1018602829
897612484786617600 9691686369089746 1040949647
897612484786617600 226142799520103675 1027346459
897612484786617600 791849793029350991 1039182773
897612...

output:

457168573
472221051
468339435
151258078
849570775
373822984
425358682
740061191
190938348
160636186

result:

ok 10 lines

Test #22:

score: 3
Accepted
time: 653ms
memory: 9476kb

input:

10
897612484786617600 750628014753890119 1022274893
961727662271376000 343339759123245095 1065063511
876240758958364800 89567842372889284 1048348559
897612484786617600 739359685926600051 1020838303
748010403988848000 747129712979718149 1054522943
876240758958364800 720096812936730964 1007826761
8762...

output:

1006139892
541194829
383805259
441539759
571065282
900165876
978545677
773223800
227933803
871953717

result:

ok 10 lines

Test #23:

score: 3
Accepted
time: 621ms
memory: 9536kb

input:

10
800573297242118400 68951444425902091 1017799529
970391875444992000 199763227435190697 1029579563
822811444387732800 260851727787862000 1067951513
961727662271376000 578874066870744950 1027562453
876240758958364800 258875322639262541 1019814031
897612484786617600 797990419793632458 1043657123
7480...

output:

840284005
575943149
915540875
68757590
319716110
218297899
74296337
1007971847
610976707
594636009

result:

ok 10 lines

Test #24:

score: 3
Accepted
time: 195ms
memory: 5732kb

input:

10
614889782588491410 185606883766390210 1068847981
614889782588491410 469867959240547695 1016494901
614889782588491410 148224024193203048 1018602829
614889782588491410 193525632182737876 1040949647
614889782588491410 176698421327864645 1027346459
614889782588491410 360793956254507711 1039182773
614...

output:

441700083
974347653
262659363
115319026
212003175
741460576
794813085
293394323
421208375
263674915

result:

ok 10 lines

Test #25:

score: 3
Accepted
time: 397ms
memory: 7800kb

input:

10
614889782588491410 548624160707403577 1022274893
941958815880242160 343339759123245095 1065063511
837296725226881920 89567842372889284 1048348559
614889782588491410 541582173157643931 1020838303
784965679900201800 747129712979718149 1054522943
837296725226881920 836928914131179604 1007826761
8372...

output:

759594331
993251321
781693177
323772251
532189358
644533459
586297154
837945148
442901990
405569292

result:

ok 10 lines

Test #26:

score: 3
Accepted
time: 430ms
memory: 8144kb

input:

10
418648362613440960 230535811145998411 1017799529
392482839950100900 134871880853629197 1029579563
627972543920161440 563617843688110000 1067951513
941958815880242160 638180606044146470 1027562453
837296725226881920 570427592491125581 1019814031
614889782588491410 133656259012902018 1043657123
784...

output:

440169170
823366712
642549401
737079582
15176364
148597990
485884416
478246206
610970646
377452274

result:

ok 10 lines

Test #27:

score: 3
Accepted
time: 196ms
memory: 5432kb

input:

10
614889782588491410 324528924460811372 1038327863
614889782588491410 139062845439531100 1006573649
614889782588491410 149429622085111161 1019605849
614889782588491410 7704136468202542 1042571897
614889782588491410 194109512776789555 1035103057
614889782588491410 197195421925608386 1002932869
61488...

output:

607449540
462251823
519639392
513705390
993398348
906521984
435956154
64350492
203368884
486514451

result:

ok 10 lines

Test #28:

score: 3
Accepted
time: 378ms
memory: 7668kb

input:

10
614889782588491410 146649548795430295 1067347297
784965679900201800 641086776380066458 1027646071
837296725226881920 761625763848323325 1018927451
784965679900201800 45331870490726382 1028887193
614889782588491410 86844596412647205 1025448899
941958815880242160 47322812242258689 1045401569
614889...

output:

682385411
262134291
317826658
185951453
415431054
231734034
830897915
738601535
260458924
788945003

result:

ok 10 lines

Test #29:

score: 3
Accepted
time: 416ms
memory: 8088kb

input:

10
837296725226881920 746214135604946978 1065739093
837296725226881920 666721954105236687 1013602927
313986271960080720 253103342166514610 1025189831
470979407940121080 8057809644202984 1017206623
941958815880242160 809534725951162510 1071436021
627972543920161440 189974394931876589 1073188141
78496...

output:

425252512
506664460
810973458
622148610
365806829
104978690
487663789
105824880
425218595
96144561

result:

ok 10 lines

Test #30:

score: 3
Accepted
time: 1ms
memory: 3640kb

input:

10
583319503545642502 512749524262429710 1016677360
998073919231328211 606822131952824549 1049557159
838270951561095909 344603458850435590 1045551183
792962702528464879 574929391996695121 1047345261
779189632161192841 2457787630059798 1036751830
701317505073449939 377307445983541927 1061278496
51829...

output:

917645780
583978911
209015992
587468785
90687328
924940421
770172601
999811269
258145824
74012699

result:

ok 10 lines

Test #31:

score: 3
Accepted
time: 1ms
memory: 3564kb

input:

10
505834248917738537 141616407693594960 1009821467
952544052832526078 250297268803379656 1040340227
738023676321505814 512476453624870754 1021112857
838845337456425128 535716618777509511 1019130793
585915921539974217 335652732109197511 1039612003
777449414933486322 732354432144283440 1057518331
768...

output:

335260513
247346826
224322183
853323773
533116010
426181477
972302899
306861660
913023257
107380372

result:

ok 10 lines

Test #32:

score: 3
Accepted
time: 14ms
memory: 3568kb

input:

10
999999822000007597 558103808373592802 1071304436
999999822000007597 514302866459361322 1072161713
999999812000008307 271935935809992630 1018128744
999999680000023751 477844293863885798 1007553250
999999830000006741 52166157770476248 1069531067
999999812000008307 263390963057727865 1033763571
9999...

output:

1068194904
979523748
126018720
230965172
654803417
944853826
244893616
402852528
272080445
214916791

result:

ok 10 lines

Test #33:

score: 4
Accepted
time: 12ms
memory: 3580kb

input:

10
999999726000014413 575878802009182398 1023868099
999999734000012789 44080224144018795 1015956811
999999866000004473 521838889502779856 1034478097
999999776000012519 471938167834409026 1021704011
999999812000008307 962126809746718079 1011420203
999999726000014413 849691353492228173 1009404439
9999...

output:

973078113
354818059
318341605
250107418
177689029
184526912
855020515
236059270
17353273
340876170

result:

ok 10 lines