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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#431878#5830. 树Crying20 1575ms562244kbC++141.8kb2024-06-06 11:25:432024-06-06 11:25:44

Judging History

你现在查看的是最新测评结果

  • [2024-06-06 11:25:44]
  • 评测
  • 测评结果:20
  • 用时:1575ms
  • 内存:562244kb
  • [2024-06-06 11:25:43]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MAXN = 1e6+10,MA = 20;
int n,q,v[MAXN]; vector<int> e[MAXN];

int pre[MAXN],buc[MAXN],dep[MAXN],to[MAXN][MA],cnt[MAXN][MA][2],dfn[MAXN],dtot;
ll f[MAXN][MA];

void dfs(int u){
    pre[u] = buc[dep[u]],buc[dep[u]] = u; dfn[++dtot] = u;
    to[u][0] = to[pre[u]][0];
    f[u][0] = f[pre[u]][0] + v[u];

    for(int i=0;i<MA;i++)cnt[u][i][v[u]>>i&1]++;
    for(auto v : e[u]){
        dep[v] = dep[u]+1;
        dfs(v);
        to[u][0] = v;
        for(int i=0;i<MA;i++)for(int j=0;j<2;j++)cnt[u][i][j] += cnt[v][i][j];
    }
}

ll Q(int x,int k){
    if(!x)return 0;
    int p = x; for(int j=MA-1;j>=0;j--)if(k>>j&1)p = to[p][j];
    ll ans = 0;
    int q = x;
    for(int j=MA-1;j>=0;j--)if(k>>j&1){
        ans += f[q][j]; q = to[q][j];
        int c[2] = {cnt[q][j][0]-cnt[p][j][0],cnt[q][j][1]-cnt[p][j][1]};
        ans += 1ll * (c[0]-c[1]) * (1<<j);
    }
    return ans;
}

int main(){
    ios::sync_with_stdio(false); cin.tie(0);

    cin>>n;
    for(int i=1;i<=n;i++)cin>>v[i];
    for(int i=2,p;i<=n;i++)cin>>p,e[p].push_back(i);
    dfs(1);

    for(int i=n;i>=1;i--)for(int j=1;j<MA;j++)to[i][j] = to[to[i][j-1]][j-1];
    for(int i=1;i<=n;i++){
        int u = dfn[i];
        for(int j=0;j<MA;j++)for(int k=0;k<2;k++)cnt[u][j][k] += cnt[pre[u]][j][k];
    }
    for(int i=n;i>=1;i--){
        for(int j=1;j<MA;j++){
            f[i][j] = f[i][j-1] + f[to[i][j-1]][j-1];
            int p = to[i][j-1],q = to[i][j];
            int c[2] = {cnt[p][j-1][0]-cnt[q][j-1][0],cnt[p][j-1][1]-cnt[q][j-1][1]};
            f[i][j] += 1ll * (c[0]-c[1]) * (1<<(j-1));
        }
    }

    cin>>q;
    while(q--){
        int x,k; cin>>x>>k; k++;
        ll ans = Q(x,k) - Q(pre[x],k);
        cout<<ans<<"\n";
    }

    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 0
Wrong Answer
time: 7ms
memory: 34776kb

input:

2000
946347867 341162491 202762650 295215762 254064439 66267204 693162580 357612557 492940637 939526638 59775103 374919339 144042807 861369313 651043728 999024805 439554916 167782038 597475252 56704409 69846137 22185655 79439847 769194737 145071391 226046618 915359433 392527325 84982946 54584098 827...

output:

31727996563
558747809
12352523
830684779042
81109471557
585197158
1628586765
922104954
8179034002
55032862871
1832814618
1719999173
57622639685
2418952903
118234180921
63795755455
403506301009
1458062157
529977884079
708763390
974312741
22160481283
541384937
113212700648
755479297
465075002
51201629...

result:

wrong answer 4th numbers differ - expected: '864526657694', found: '830684779042'

Test #2:

score: 0
Wrong Answer
time: 58ms
memory: 77652kb

input:

99999
792064428 473106195 799314986 65440734 948726345 442414256 280245405 873012700 466192412 899092866 283555341 657824017 963883713 793944180 767444438 105576842 542107696 580140098 65321660 381184238 584604194 397414881 861590124 309323011 217641157 120832524 303744205 961590116 110259426 380351...

output:

2509771019
102808896745
528899856
125427731
1953894159
-42625724686
197086499985
586671581
187927602236
798898621
468901916
1620113250
25990778
1594379152
3535933560
353694206557
1721547881
1491500623
142910958434
353694206557
263989598
1350176621
500678054027
727716410
1144261338296
1849681495
5865...

result:

wrong answer 6th numbers differ - expected: '2464509509394', found: '-42625724686'

Test #3:

score: 10
Accepted
time: 1569ms
memory: 562244kb

input:

1000000
947727010 179844140 923847675 171881267 5552129 974443359 989307850 869400987 126992154 527448411 141137718 136124474 917813105 392020809 79012342 473860575 969007624 833563354 90169336 878445705 84352622 403307122 733751738 670851448 942399068 731541999 101293644 545785337 964751520 9168003...

output:

322288180595345
64144900444023
131621992874362
185914449206495
4835864536999
52498320047300
91107191167946
133549265294890
287851078359140
123171067016186
128593134440538
8701280311335
14021811618693
65043919486113
310510908841731
15605852792829
75072265994522
73630260235120
66821009550818
217424650...

result:

ok 1000000 numbers

Test #4:

score: 10
Accepted
time: 1575ms
memory: 562172kb

input:

1000000
264862971 751386013 921867736 711577153 262726588 565608444 975324815 440219681 107888226 928241413 729126923 283912914 86248857 896446999 12839598 651796991 139813366 105131395 341646170 839485925 939265720 844548518 102280410 457829889 8602879 737140565 17206920 974175632 535833885 8373832...

output:

1437301063221
97809309869545
338628270305337
233680181746714
7398781587300
271306073103235
20877473367084
90775179215463
2535173725689
66604505519276
211534325021331
84757341592614
17886216279466
132051595671397
1860377236584
46253790496717
83950882453932
257274371637175
240943229927301
118446604805...

result:

ok 1000000 numbers

Test #5:

score: 0
Wrong Answer
time: 783ms
memory: 470632kb

input:

1000000
978606419 773027389 111265179 979476504 280718851 476857501 751854950 579263969 848569548 781051974 31782627 533831186 812822170 111553645 297770650 331144396 676977983 2236128 258203325 75591120 676466973 60056446 494411414 286185093 92474576 173276071 535648669 87210101 355790411 880267291...

output:

2258826661
938786622
1803221827
20412967786
11943681449
2783437365
41181595551
2720451454
1859550937
476794111
986063591
1579646962
14494868585
38176990
781099105
527479272
2392930136
2519423502
1620138021
23553905552
5107065078
6903424087
1206547828
34867978779
49589751
499629803
4275328259
1379311...

result:

wrong answer 7th numbers differ - expected: '16665953904', found: '41181595551'

Test #6:

score: 0
Wrong Answer
time: 802ms
memory: 470304kb

input:

1000000
952470566 585754087 120174600 401525004 458588768 5487567 31210348 446333263 231409083 521960132 457721893 866842852 925207283 16805978 4706826 99640835 619272676 136536623 459247161 308807462 633687300 717271369 23906473 865522890 173799280 424309108 719410673 118906385 110627845 730629403 ...

output:

994051214
904057442
5205910500
145488261318
190185745355
976251948
369701890
43760580
1510389651
3077329408
2634025913591
716198149
190685967
310640954711
709722957617
557364187
1084839575
3104092
276690929
-183190904341
467852673
33049527
-152710527786
218578612032
474813613152
426018723
694554152
...

result:

wrong answer 3rd numbers differ - expected: '2995278795', found: '5205910500'

Test #7:

score: 0
Wrong Answer
time: 790ms
memory: 474852kb

input:

1000000
732367509 105027907 958920212 886798715 102486738 813075884 301085392 242303497 979657287 944859684 307768 438158233 561755409 740706505 791145209 283862713 828081846 771569552 59044985 600549571 191330226 438693570 36976319 810654215 220068818 771875421 740642902 839964155 206129566 2065543...

output:

999908753
401770479
1240960415200
-133533954948
120552832668
3048712491190
1146711843
219130830522
2910590132
4981801495
1079679207
2140524944
75514756
451917308594
2507720790075
-1126649764908
190116652690
1085743066
92693707594
597726354572
516500710858
990736484
-3185027414089
1021620355564
41593...

result:

wrong answer 3rd numbers differ - expected: '206278425790162', found: '1240960415200'

Test #8:

score: 0
Wrong Answer
time: 717ms
memory: 473412kb

input:

1000000
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...

output:

165823105
96010863
18972590
28
94121264
71907918
0
124529621
47395
1
3
1
1
1
1
0
-17224704
1
0
27467200
8
0
0
3
0
65379243
1
0
0
0
0
145076969
-11608278
0
301348
321015803
10
83426561
10440296
1
1
10296029
7168686
3
654749026
0
145237958
2
1
4
604056949
6
7873107
0
146940762
85718517
3
13
1
3
303458...

result:

wrong answer 1st numbers differ - expected: '3826404725', found: '165823105'

Test #9:

score: 0
Wrong Answer
time: 740ms
memory: 476220kb

input:

1000000
465660691 982007525 816592310 377030959 572981469 679249520 86377999 709561525 940473306 35102782 886143915 792819787 903287397 264564177 857982095 91486434 217197704 123118964 383387342 820268798 497623987 255010796 607884194 848568529 38169627 197987657 421323589 664004905 485409127 696844...

output:

96094116015
480270751648
1429748824089
56478014531
275400654
1384234654
64716568
95454147115
395495962055
100740674311
4065141579395
528398853
1456723425
1214744688
533742649350
23475037
1530174818130
245789356
109738951
420357802367
1397666358094
102619945
1620400919978
1556076353
977517555809
7640...

result:

wrong answer 2nd numbers differ - expected: '8243992183131', found: '480270751648'

Test #10:

score: 0
Wrong Answer
time: 740ms
memory: 480052kb

input:

1000000
665830082 788228483 245541444 289601309 641764988 150723484 925214020 557415731 310210969 379707835 517820381 883917428 134445288 775557009 444476671 89856268 655841087 888410254 37788122 694551869 563331754 488108584 839551943 415095075 445425438 35452604 562044723 640544531 146258096 66852...

output:

431856043
520373616
657641206086
412292034933
1597660849801
129023773576
762015332
359781238032
1184478776
594507511
597696604001
2951089847709
306250439
62500137
763858857173
786078000
141943454692
4162775188
224349564696
877965179
218547169284
1013123764
184682579633
159894698587
542306751
1978036...

result:

wrong answer 3rd numbers differ - expected: '77562434895287', found: '657641206086'