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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#601531#5065. Beautiful Stringgozonite#AC ✓1213ms394808kbC++145.2kb2024-09-30 04:08:102024-09-30 04:08:16

Judging History

你现在查看的是最新测评结果

  • [2024-09-30 04:08:16]
  • 评测
  • 测评结果:AC
  • 用时:1213ms
  • 内存:394808kb
  • [2024-09-30 04:08:10]
  • 提交

answer

#include <iostream>
#include <vector>
#include <string>
#include <fstream>
#include <algorithm>
#include <climits>
#include <cstdlib>
#include <cstdio>
#include <set>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <bitset>
#include <deque>
#include <queue>
#include <tuple>
#include <cmath>
#include <cctype>
#include <stack>
#include <cassert>
#include <iomanip>
#include <random>
#include <chrono>
using namespace std;
using ll = long long;

int n;
string s;
int bcnt[5001][5001]={}, pcnt[5001][5001]={}, lcnt[5001][5001]={};
int lmatch[5001][5001]={};
ll hsh[5001][2], pwr[5001][2], ipwr[5001][2];
// ll hshv[5001]
ll a[] = {31, 97}, P[] = {ll(1e9 + 7), ll(1e9 + 9)};
ll ainv[] = {-1, -1};

ll binpow(ll b, ll e, ll p) {
    ll bp[31];
    bp[0] = b;
    for (int i = 1; i < 31; i++) bp[i] = bp[i-1]*bp[i-1] % p;
    ll res = 1;
    for (int i = 0; i < 31; i++)
        if (e & (1<<i)) res = res * bp[i] % p;
    return res;
}

ll inv(ll x, ll p) {
    return binpow(x, p-2LL, p);
}

bool heq(int i, int j, int l) {
    // assert(j+l-1 <= n && i+l-1 <= n && i >= 1 && j >= 1);
    for (int k = 0; k < 2; k++) {
        ll jh = (hsh[j+l-1][k] - hsh[j-1][k]) * ipwr[j][k] % P[k]; jh = (jh + P[k]) % P[k];
        ll ih = (hsh[i+l-1][k] - hsh[i-1][k]) * ipwr[i][k] % P[k]; ih = (ih + P[k]) % P[k];
        if (jh != ih) return false;
    }
    return true;
}

void build_hash() {
    for (int i = 0; i < 2; i++) {
        hsh[0][i] = 0;
        for (int j = 1; j <= n; j++) hsh[j][i] = (hsh[j-1][i] + ll(s[j]-'0')*pwr[j][i]) % P[i];
    }
}

int main() {
    // freopen("B.in", "r", stdin);
    // freopen("B.out", "w", stdout);

    for (int i = 0; i < 2; i++) {
        pwr[0][i] = 1;
        for (int j = 1; j <= 5000; j++) pwr[j][i] = pwr[j-1][i]*a[i] % P[i];
        ainv[i] = inv(a[i], P[i]);
        // cout << "ainv: " << ainv << i << endl;
        // assert((a[i] * ainv[i]) % P[i] == 1);
        ipwr[0][i] = 1;
        for (int j = 1; j <= 5000; j++) {
            ipwr[j][i] = ipwr[j-1][i]*ainv[i] % P[i];
            // cout << "pwr, ipwr: " << pwr[j][i] << " " << ipwr[j][i] << endl;
            // assert((pwr[j][i]*ipwr[j][i])%P[i] == 1);
        }
    }

    // run TC on sample strings???

    int T; cin >> T;
    while (T--) {
        cin >> s; n = s.size(); s = " " + s;
        build_hash();
        // cout << "testing 2 5: " << heq(2, 5, 1) << endl;

        for (int i = 1; i <= n; i++) { // compute pcnt[i][-]
            bcnt[i][0] = lcnt[i][0] = pcnt[i][0] = 0;
            for (int l = 1; i+l-1 <= n && i-l >= 1; l++) {
                bcnt[i][l] = heq(i, i-l, l);
                pcnt[i][l] = pcnt[i][l-1] + bcnt[i][l];
                lcnt[i][l] = lcnt[i][l-1] + l*bcnt[i][l];
            }
        }

        // cout << "pcnt: " << endl;
        // for (int i = 1; i <= n; i++) {
        //     cout << i << ": ";
        //     for (int l = 1; i+l-1 <= n && i-l >= 1; l++) cout << pcnt[i][l] << " ";
        //     cout << endl;
        // } cout << endl;

        // cout << "bcnt: " << endl;
        // for (int i = 1; i <= n; i++) {
        //     cout << i << ": ";
        //     for (int l = 1; i+l-1 <= n && i-l >= 1; l++) cout << bcnt[i][l] << " ";
        //     cout << endl;
        // } cout << endl;

        // cout << "lcnt: " << endl;
        // for (int i = 1; i <= n; i++) {
        //     cout << i << ": ";
        //     for (int l = 1; i+l-1 <= n && i-l >= 1; l++) cout << lcnt[i][l] << " ";
        //     cout << endl;
        // } cout << endl;

        // for (int i = 1; i <= n; i++) {
        //     for (int j = i+1; j <= n; j++) {
        //         int low = 0, hi = min(j-i-1, n-j+1); // subtract 1 for s_4
        //         while (low < hi) {
        //             int mid = (low + hi+1)/2;
        //             // cout << "testing: " << i << " " << j << " " << mid << " " << heq(i, j, mid) << endl;
        //             if (heq(i, j, mid)) low = mid;
        //             else hi = mid-1;
        //         }
        //         lmatch[i][j] = low;
        //     }
        // }

        // rewrite of the above: don't need to binary search
        for (int j = n; j >= 1; j--) {
            for (int i = j-1; i >= 1; i--) {
                if (s[i] != s[j]) lmatch[i][j] = 0;
                else {
                    lmatch[i][j] = min(1, j-i-1); // max len = j-i-1
                    if (j < n) lmatch[i][j] = max(lmatch[i][j], min(1+lmatch[i+1][j+1], j-i-1));
                }
            }
        }

        // cout << "checking lmatch: " << endl;
        // for (int i = 1; i <= n; i++) {
        //     for (int j = 1; j <= n; j++) {
        //         cout << lmatch[i][j] << " ";
        //     }
        //     cout << endl;
        // } cout << endl;

        ll ans = 0;
        for (int i = 1; i <= n; i++) {
            for (int j = i+1; j <= n; j++) {
                int lm = lmatch[i][j];
                int lmp = min(lm, i-1);
                ans += lm*pcnt[i][lmp] - lcnt[i][lmp];
                // cout << "adding: " << i << " " << j << " - " << lm << " " << pcnt[i][lm] << " " << lcnt[i][lm] << " " << ans << endl;
            }
        }
        cout << ans << endl;
    }
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 11840kb

input:

2
114514
0000000

output:

1
3

result:

ok 2 number(s): "1 3"

Test #2:

score: 0
Accepted
time: 160ms
memory: 394340kb

input:

11
79380
2483905227
37902399703986576270
39991723655814713848046032694137883815354365954917
5541883522667841718787744915558298207485830622522715211018760095628594390563630840464643840093757297
56530485554219245862513973750218715585679416120445975390556326891488719311495909340757506478400624741858999...

output:

0
0
0
2
4
20
119
113
1086
2128
15166

result:

ok 11 numbers

Test #3:

score: 0
Accepted
time: 14ms
memory: 26184kb

input:

50
11111111111111111111111111111111111111121111111111111111111111111111111111111112111111111121111111111211111121211121111111111111111111111111111211121111111111111111111111111111111111111111111111111112
111111111111111111111111111111111111111111111121111121111111111111111111111111111111111111111111...

output:

779344
799116
716078
723215
1197647
403357
652134
625671
414294
942493
390998
793444
612061
507395
473508
836065
461623
374925
539333
592574
676408
610940
463761
490048
995917
595830
424894
332669
596834
655095
521489
1032050
697420
752056
406316
360973
1180943
948628
478572
1026603
711224
429752
49...

result:

ok 50 numbers

Test #4:

score: 0
Accepted
time: 10ms
memory: 26440kb

input:

50
11211121122222111222111111222112111221112111121112221111111121211111212211212122112212221221112112221221112211211112121222112221211122112211112111112112211121222111222212211121111111112111112121111122
112112121211212111212221221222211211121212221111112122121211112221221121121112111221211112122121...

output:

7499
6375
7041
7889
6622
6804
8695
8795
7018
8387
8910
8019
8223
8820
7324
7144
8035
9941
7073
7373
7427
7280
6946
8204
7931
6769
7050
9268
7682
8232
7797
7356
7012
8967
7469
6869
11728
6562
7604
8840
7885
8658
7006
8156
10694
6716
6121
7499
7456
7981

result:

ok 50 numbers

Test #5:

score: 0
Accepted
time: 332ms
memory: 168732kb

input:

15
111111111111111111111111111111111111111111111111111111111111121111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111211111111111111111111111111111111111111111111111...

output:

6611556286
8447635347
4351265656
8244172287
6847075843
5064323828
5818821992
5187397748
6202849391
7100699750
8826693258
9304467838
9691754783
12524687288
10378182916

result:

ok 15 numbers

Test #6:

score: 0
Accepted
time: 286ms
memory: 167588kb

input:

15
111111111111111111111111111111111111111111111111111111121112111111111111111111111111211111112111111111111111111111111112112111111111211111111111111111121211111111111111111112121111211112112111111112111111111111111112111111111111111111111111111111111111111211111211211111111111111112211111111111111...

output:

99283290
121730268
95231372
139100190
109487920
93015077
138212377
180336129
94959502
88117283
81796472
100172151
133716692
92198870
119549081

result:

ok 15 numbers

Test #7:

score: 0
Accepted
time: 873ms
memory: 393104kb

input:

6
1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

output:

385321895637
278064026340
462204013200
622961805899
319151572118
194136546751

result:

ok 6 numbers

Test #8:

score: 0
Accepted
time: 778ms
memory: 393068kb

input:

6
1111211111111111111111111112111111111111111111111111111111111111111111111111111111111111111121111111112111111111111111111111211111111111111111111111111111111111111111111111111111112111111111111111111111111111111111111111111111111111111111111111111111111111111211111111112111111111111111111111111111...

output:

4279296283
6481388714
4807510535
5043682133
5816318027
4092854445

result:

ok 6 numbers

Test #9:

score: 0
Accepted
time: 1213ms
memory: 393840kb

input:

6
1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

output:

4333336111111
4333336111111
4333336111111
4333336111111
4333336111111
4333336111111

result:

ok 6 numbers

Test #10:

score: 0
Accepted
time: 776ms
memory: 393720kb

input:

6
1111111111111111111111111111111111121111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

output:

4827246439
5292779668
4777240971
4935748521
5102858676
4471955490

result:

ok 6 numbers

Test #11:

score: 0
Accepted
time: 771ms
memory: 393668kb

input:

6
1111111111112111111112111111111111111211111111111111111111111111111111111111111111111111111111111111111111111111111111111111111211111111111111111111111111111111111111112111111111111111111111111111111111111111111111121111111111111111111111111111111111111111111111111111111121111111111111111111111111...

output:

5823633843
3699828594
5341000227
4377298465
5641079075
4447500985

result:

ok 6 numbers

Test #12:

score: 0
Accepted
time: 786ms
memory: 393828kb

input:

6
1111111111111111111111111111111121121111111111111111112111111111111111111111111111111111111111111111111211111111111111111111121111111111111111111111111111111111111111111111111111111121111111111211111111111111111111111111121111112111111111111111111111111111111111111111111111111112111111111111111111...

output:

4267388536
4492067906
3738167207
4136464174
5508219259
4485317348

result:

ok 6 numbers

Test #13:

score: 0
Accepted
time: 753ms
memory: 394808kb

input:

6
1101000101000011111101010011000111011101101000100101001011110000000010100000011011010010110000100000100100101110000010110010101011011100101000111010101110101010100011011111111111101001110101011000000011100011110001100001100101101111101011101110001000100110011001101100000010111111000010010110100011...

output:

4170757
4235303
4280835
4036729
4224784
4097571

result:

ok 6 numbers

Test #14:

score: 0
Accepted
time: 763ms
memory: 393392kb

input:

6
1000010101000000011000111100000101011010010011100011011000010110111100111100000011011010110111000110000000010011000110110110101010010001110101100011100111101010100100111010000111101110110010100100010111010100111011011010001100001011111110100111011011110111110011011110001000001110000111001110000001...

output:

4170610
4216137
4141929
4074459
4103480
4155187

result:

ok 6 numbers

Test #15:

score: 0
Accepted
time: 766ms
memory: 393812kb

input:

6
0010101111000111001110000101110110111110111001000111111101101000010110010110011001110111000100100110101110101110110001001110101110010100000001011000000110001010001101101100010100101001111100010010011110110110010011100110110011000010100111010000001001000011101000001100000010111000100111001111000011...

output:

4188094
4069991
4153306
4138723
4193430
4269969

result:

ok 6 numbers

Test #16:

score: 0
Accepted
time: 770ms
memory: 393340kb

input:

6
1010011000022211220102102221221120220200012021212112100210101220120211212010020000001200102200001021100202210100212011022212000020001120211012111021201021201220012221011220100212012112021210220202110212122010110220100212102001121021212201201202220011202011121020002122220201022101012100110120200202...

output:

762521
775249
766566
776466
767496
773997

result:

ok 6 numbers

Test #17:

score: 0
Accepted
time: 750ms
memory: 393992kb

input:

6
2112200102110121202000120220021122121112012120022122222000022200200200211122202220011202112012022110001210200101222201000121012210200200121222101011112202101220220100201111102020110120202110212100011101022020220222022201220210210010212100120200220210110020010002212210222220220122101021222212102012...

output:

775146
780112
772793
789871
769398
751477

result:

ok 6 numbers

Test #18:

score: 0
Accepted
time: 767ms
memory: 393272kb

input:

6
1202020112011201022200111211201111201112021222202021211010212110111212212021210022212220102001102212021012020201112210211001112121110021122220210011011111200001210100110100022020002221212201210002002201121002012101001122212000012000221012102122002202121221012120010012210221102120221112020021102200...

output:

770245
773441
778781
774717
763612
785411

result:

ok 6 numbers

Test #19:

score: 0
Accepted
time: 769ms
memory: 394392kb

input:

6
1403433222403320324443213210401332204104111441413010310140204031300032441124444024440444032203210330020104104024321422401444400214444401012242144300114343324010000332043341320044400440221433034402011001440122344021300323423140212040404341013130244243312333424204220102034014133104032302000242104333...

output:

127310
131513
132001
133547
136948
123146

result:

ok 6 numbers

Test #20:

score: 0
Accepted
time: 746ms
memory: 394120kb

input:

6
4420212030303213202420200421002204043223242404131332322013240323024421211333422120334210210322141014423131241104001320012024401040142403221101312330144111303244432233344222004311342314001104344332304000332444330123043110212434421432133044042020231441143211202223112033431111334241014440341202124111...

output:

133037
135811
136885
131180
122015
132937

result:

ok 6 numbers

Test #21:

score: 0
Accepted
time: 748ms
memory: 393704kb

input:

6
4332230232243230444230131024204211040243041244334030202344403220024231030034441044424432243332040132013111231340040332313403140042002043232021032222301011023040424430332121024433024423342042330400121000310403223022401140331041341342144244242001003344304422234013403242040101241211004243144123211431...

output:

127430
133525
126715
132274
127698
126098

result:

ok 6 numbers

Test #22:

score: 0
Accepted
time: 756ms
memory: 393528kb

input:

6
0527263590989141398232467856769831076313726236318424949659487118071189858207212813256095130174457689283834002567489506688742811929495836845346574214442431806207922088635218623247713449618250327996704066964677828138959300478603648072151173680624525749414417511246438552658377964191998159022294264700...

output:

13052
14055
12735
13977
13607
13263

result:

ok 6 numbers

Test #23:

score: 0
Accepted
time: 763ms
memory: 393964kb

input:

6
8985698942224498646718114023735214365880465106150608651120921860620477353602287449891278787783353603584570539632891665520222495181615797114829203643301699646447450283290904599608791054139526174224570160892800365598486001957635902589788386777049717342723358733031824964857029876786039246614641902915...

output:

14405
14107
14583
13846
13886
14627

result:

ok 6 numbers

Test #24:

score: 0
Accepted
time: 766ms
memory: 394608kb

input:

6
2965981105224229828206155834019360865567450584618944735155746817705841028252810298576084705498691348447250223233175567175756271273064057221729918634935150104533255094708503568665533583917395614462772605254978221157191215802752180325788860577750484790419032850005124772538059322878051522259269884117...

output:

14349
13527
14319
14103
13213
13615

result:

ok 6 numbers