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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#385251#7765. Xor Mastervaleriu#0 1554ms4692kbC++202.9kb2024-04-10 16:57:532024-07-04 03:34:05

Judging History

你现在查看的是最新测评结果

  • [2024-07-04 03:34:05]
  • 评测
  • 测评结果:0
  • 用时:1554ms
  • 内存:4692kb
  • [2024-04-10 16:57:53]
  • 提交

answer

#include <bits/stdc++.h>
#define all(x) (x).begin(),(x).end()
using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = long double;

//#define int ll
#define sz(x) ((int)(x).size())

using pii = pair<int,int>;
using tii = tuple<int,int,int>;

const int bmax = 64;

namespace Basis {
   ull pivot[bmax];
   ull contrmsk[bmax];
   ull control = 0;
   ull flippers = 0;
   
   bool add(ull x) {
      for(int i = bmax - 1; i >= 0; i--) {
         if(pivot[i] == 0 && ((1ull << i) & x)) {
            pivot[i] = x;
            break;
         }
         else if(pivot[i] != 0 && ((1ull << i) & x))
            x ^= pivot[i];
      }
      if(x == 0) return 0;
      for(int i = 0; i < bmax; i++) {
         if(pivot[i] == 0) continue;
         for(int j = i + 1; j < bmax; j++) {
            if(pivot[j] & (1ull << i))
               pivot[j] ^= pivot[i];
         }
      }
      
      control = 0;
      flippers = 0;
      for(int contra = 0; contra < bmax; contra++) {
         if(pivot[contra] != 0) {
            contrmsk[contra] = 0;
            control |= (1ull << contra);
            continue;
         }
         for(int i = contra + 1; i < bmax; i++)
            if(pivot[i] & (1ull << contra)) contrmsk[contra] |= (1ull << i);
            
         if(__builtin_popcountll(contrmsk[contra]) % 2 == 1)
            flippers |= (1ull << contra);
      }
      
      return 1;
   }
   
   ull get_val(ull a) {
      ull R = 0;
      for(int i = 0; i < bmax; i++) {
         if(pivot[i] != 0) continue;
         R |= ((ull)((__builtin_popcountll(a & contrmsk[i]) & 1) 
                  ^ ((a & (1ull << i))? 1 : 0))) << i;
      }
      return R;
   }
}

signed main() {
   cin.tie(0) -> sync_with_stdio(0);
   int n, q;
   cin >> n >> q;
   
   vector<ull> v(n + 1), real(n + 1);
   for(auto &x : v | views::drop(1)) cin >> x;
   real = v;
   
   auto update = [&](int p, ull x) {
     v[p] ^= Basis::get_val(x);
     real[p] ^= x;
   };
   
   auto reformat = [&]() {
      for(int i = 1; i <= n; i++) v[i] = Basis::get_val(real[i]);
      return;
   };
   
   auto query = [&](int l, int r) -> ull {
      ull rez = 0, part = Basis::flippers;
      for(int i = l; i <= r; i++)
         part ^= v[i],
         rez += part;
      return rez;
   };
   
   for(int i = 0; i < q; i++) {
      int T;
      cin >> T;
      if(T == 1) {
         int p; 
         ull x;
         cin >> p >> x;
         update(p, x); 
      }
      
      else if(T == 2) {
         ull x;
         cin >> x;
         if(Basis::add(x)) {
            reformat();
         }
      }
      
      else {
         int l, r;
         cin >> l >> r;
         cout << query(l, r) + Basis::control * (ull)(r - l + 1) << '\n';
      }
   }
   
}

/**
  Anul asta nu se da centroid
  -- Rugaciunile mele
*/


Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 10
Accepted
time: 2ms
memory: 3628kb

input:

2000 2000
1860495733 462603674 3739839441 759356520 47330263 550811730 2301200895 989240351 2499503801 2624225494 2123076812 1180966826 238739434 488666688 784742950 2583466952 4111371941 2335988605 2583741355 933716686 1644403538 1970423306 304500250 905101643 1814942168 1136358764 88729799 1577263...

output:

867006634793
3418049036989
1658469159497
794670034691
239792547603
1587489101990
592222190840
1343829229567
971235609706
571701308760
1219913933321
588622962923
2129364200509
1007100395808
3134493164996
3145027621038
2599298085956
1729302186341
837940435945
242569415869
2908005634977
1692554597386
1...

result:

ok 1001 lines

Test #2:

score: -10
Wrong Answer
time: 2ms
memory: 3564kb

input:

2000 2000
836488286 497338588 1858847699 3099907357 1601878363 409027819 646677017 3314413779 3312383261 4245381929 661740170 2016795844 1226219370 1347593623 4008424282 2941543248 1331853899 3217984002 3651447350 1223595274 1733763258 2829453991 3934056384 2556266950 326379115 3240694642 2405972228...

output:

1042755994488
3566460727022
4896344756993
181148455339
5392308096517
128329799686
3895218239827
646945360393
2802192775672
4115818631146
377318752396
3776679332329
1298148822697
1295992748696
1351097540228
3413899110602
2303816407066
1713972222254
3490230048186
359123029421
2753519321710
37163510035...

result:

wrong answer 977th lines differ - expected: '4374082236485', found: '4372304500229'

Subtask #2:

score: 0
Time Limit Exceeded

Test #5:

score: 0
Time Limit Exceeded

input:

500000 100000
12261386944926786495 7846697792998647383 16622924885320463714 170129022271213944 12625257523700625864 7684671687986103560 11532026873918423068 1131776055566669037 8263146651412710501 17872572061246021001 5017109039248728310 11088626167542318645 13810119722795416818 10928315716094262229...

output:

12337138966997790840
11593856511006775316
5653988472748567965
6281173414355612100
18027435777450732541
2903343914316621940
9422461876307420631
76690753587353877
798850376670823348
10137130634921141648
13914431888234873359
10192090671035653185
11569745711967074397
12303071505845046803
637460082558284...

result:


Subtask #3:

score: 0
Skipped

Dependency #2:

0%

Subtask #4:

score: 0
Wrong Answer

Test #15:

score: 0
Wrong Answer
time: 1554ms
memory: 4692kb

input:

100000 100000
860905160 3192911636 290327446 2020707113 959258245 454185039 421895589 1070265496 2218913641 1684685660 1206723673 2606734467 4247254571 3341954386 3805299640 1702270353 2472053741 2816060613 1307901348 2702949728 879391505 884661815 330738731 1575749344 1239158446 2099693858 67466644...

output:

208755389215975
125497785366837
162446748431411
63166834945113
33018804920229
89343160639243
36805816758195
40790494641758
13928126471189
267168502433672
192000676448986
276331663634542
11189871512224
133864906084594
92657178688034
179286292340330
46152188099705
232626363503857
184966537137088
11021...

result:

wrong answer 11th lines differ - expected: '191989403472418', found: '192000676448986'

Subtask #5:

score: 0
Skipped

Dependency #4:

0%

Subtask #6:

score: 0
Skipped

Dependency #1:

0%

Subtask #7:

score: 0
Skipped

Dependency #1:

0%