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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#865855 | #4882. String Strange Sum | Gold_Dino | WA | 53ms | 23372kb | C++14 | 4.6kb | 2025-01-22 01:01:15 | 2025-01-22 01:01:17 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define info(...) fprintf(stderr,__VA_ARGS__)
using ll_t=long long;
const int N=2e5+7;
int T,n;string s;
ll_t ans,sum;
int sa[N],satmp[N],*cur,*las,*head[N],cnt[N],rk[N],trk[N*2],H[N],hst[20][N];
int hook[N];vector<int>L[N];
template<class T>void clr(T*a,int n){memset(a,0,sizeof(T)*n);}
template<class T>void cpy(T*a,T*b,int n){memcpy(a,b,sizeof(T)*n);}
int qryst(int l,int r)
{
int len=r-l+1,lg=__lg(len),w=1<<lg;
return min(hst[lg][l],hst[lg][r-w+1]);
}
int RK(int x){return rk[n-x-1];}
int SA(int x){return n-sa[x]-1;}
int lcs(int x,int y)
{
assert(x!=y);
// info("%d %d ",x,y);
x=RK(x),y=RK(y);
// info("%d %d\n",x,y);
if(x>y)swap(x,y);
return qryst(x+1,y);
}
int main()
{
ios::sync_with_stdio(false),cin.tie(NULL);
cin>>T;
for(int cas=1;cas<=T;++cas)
{
// info("cas=%d\n",cas);
cin>>s,n=(int)s.size(),reverse(s.begin(),s.end()),clr(cnt,128),clr(trk,n*2);
for(int i=0;i<n;++i)++cnt[rk[i]=s[i]];
head[0]=las=sa,cur=satmp;
for(int i=1;i<128;++i)head[i]=head[i-1]+cnt[i-1];
for(int i=0;i<n;++i)*(head[rk[i]]++)=i;
for(int step=1;step<=n;step<<=1)
{
clr(cnt,max(n,128));
for(int i=n-1;i>=n-step;--i)++cnt[rk[i]];
for(int i=0;i<n;++i)if(las[i]>=step)++cnt[rk[las[i]-step]];
head[0]=cur;
for(int i=1;i<max(n,128);++i)head[i]=head[i-1]+cnt[i-1];
for(int i=n-1;i>=n-step;--i)*(head[rk[i]]++)=i;
for(int i=0;i<n;++i)if(las[i]>=step)*(head[rk[las[i]-step]]++)=las[i]-step;
cpy(trk,rk,n);
for(int i=0;i<n;++i)rk[cur[i]]=(i?rk[cur[i-1]]+(cur[i]>=n-step||cur[i-1]>=n-step||trk[cur[i]]!=trk[cur[i-1]]||trk[cur[i]+step]!=trk[cur[i-1]+step]):0);
swap(las,cur);
// for(int i=0;i<n;++i)info("%d%c",rk[i]," \n"[i==n-1]);
}
for(int i=0;i<n;++i)sa[i]=las[i];
// info("%s\n",s.c_str());
// for(int i=0;i<n;++i,info("\n"))for(int j=sa[i];j<n;++j)info("%c",s[j]);
clr(H,n);
for(int i=0;i<n;++i)if(rk[i])
{
if(i)H[rk[i]]=max(0,H[rk[i-1]]-1);
while(max(i,sa[rk[i]-1])+H[rk[i]]<n&&s[i+H[rk[i]]]==s[sa[rk[i]-1]+H[rk[i]]])++H[rk[i]];
hst[0][rk[i]]=H[rk[i]];
}
// for(int i=0;i<n;++i)info("%d\n",rk[i]);
for(int i=1;(1<<i)<=n;++i)for(int j=0;j+(1<<i)<=n;++j)
hst[i][j]=min(hst[i-1][j],hst[i-1][j+(1<<(i-1))]);
reverse(s.begin(),s.end());
int K=(int)sqrt(n);
// info("K=%d\n",K);
ans=sum=0;
for(int i=0;i<n;++i)L[i].clear(),hook[i]=i;
// info("%d %d\n",rk[2],rk[0]);
for(int r=0;r<n;++r)
{
// info("[r=%d]\n",r);
vector<pair<int,int>>prio;
if(r>=K)
{
for(int x=max(0,RK(r)-K+1);x<=min(n-1,RK(r)+K-1);++x)
{
if(x==RK(r))continue;
int t=SA(x);
assert(t>=0);
if(t>=r)continue;
int cs=lcs(t,r);
// info("t=%d lcs=%d\n",t,cs);
auto chk=[&](int l){return cs>=r-l+1;};
while(!L[t+1].empty()&&chk(L[t+1].back()))
{
int l=L[t+1].back();
// sum-=hook[l],hook[l]=hook[hook[l]-(r-l+1)],sum+=hook[l];
prio.push_back({hook[l]-(r-l+1),l});
L[t+1].pop_back();
// L[hook[l]].push_back(l);
}
}
}
if(r-K+1>=0)prio.push_back({r-K+1,r-K+1});
for(int l=max(0,r-K+1);l<r;++l)
if(hook[l]&&lcs(hook[l]-1,r)>=r-l+1)
// sum-=hook[l],hook[l]=hook[hook[l]-(r-l+1)],sum+=hook[l];
prio.push_back({hook[l]-(r-l+1),l});
sort(prio.begin(),prio.end()),reverse(prio.begin(),prio.end());
for(auto p:prio)
{
sum-=hook[p.second],hook[p.second]=hook[p.first],sum+=hook[p.second];
}
sort(prio.begin(),prio.end(),[&](pair<int,int>a,pair<int,int>b){return a.second<b.second;});
for(auto p:prio)L[hook[p.second]].push_back(p.second);
if(r&&s[r]==s[r-1])hook[r]=hook[r-1];
sum+=hook[r];
// for(int i=0;i<=r;++i)info("%d%c",hook[i]," \n"[i==r]);
// info("sum=%lld\n",sum);
ans+=1ll*r*(r+1)/2-sum;
}
printf("%lld\n",ans);
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 21388kb
input:
8 aa ab ababa abaaba abacaba abaaababaab aababcabcbc abcdabcabaabcd
output:
1 0 6 7 0 74 51 20
result:
ok 8 numbers
Test #2:
score: 0
Accepted
time: 40ms
memory: 18044kb
input:
100000 ff ki wb vc bb cq tt gl xb tt ll it bb yy dd yg tt vq gg ua ff nn aa yq ee ae sj yy cd qk vk ts tt cm rr yk sh fv vm rr tl vv bb rl jx pv tx ib dp oo lx jo bb dl sj sn db kk oo rk yy gz ff ha ja ax hn ww ms yy kf zz ss ii km uv mn si ng hh yq lq bq ed bb bw jj pp ss xg ff gm ee cc fn vv rc nn...
output:
1 0 0 0 1 0 1 0 0 1 1 0 1 1 1 0 1 0 1 0 1 1 1 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 1 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 1 0 1 0 1 0 0 0 0 1 0 1 0 1 1 1 0 0 0 0 0 1 0 0 0 0 1 0 1 1 1 0 1 0 1 1 0 1 0 1 0 0 1 1 1 0 0 0 1 1 0 0 1 1 1 0 1 1 1 1 1 0 0 1 0 0 0 1 1 1 0 0 1 0 1 1 1 1 1 1 0 0 0 0 0 1 0 1 0 0 0 1 ...
result:
ok 100000 numbers
Test #3:
score: 0
Accepted
time: 30ms
memory: 19192kb
input:
40000 nbbnn tttuu rfeer omhom qqcmq yyiyi tlttt jhjtj ixiyx bnnon iwpiw uzluz ffqfj dyddl szkss dauud dddiy gggtt ebbee uboob nnnnv rrjrj cjccj xnnyy mwmjw wyyyq vvuvp vyzyv sssss vvsvs rhxxr pkkpk xsxss ngncn wzwjz khkth jjjjj vvvbb unnxn aqlqq mmgmg iiiji lyllv luuuu itizt fsffs xggii jqqtj mummd ...
output:
4 11 2 0 4 7 4 0 0 3 0 0 4 2 1 2 10 11 4 2 16 7 4 4 0 7 4 0 20 7 2 3 5 0 0 0 20 11 3 1 7 10 2 10 0 4 4 3 2 3 4 6 1 4 10 3 6 10 10 16 7 7 0 10 5 0 2 16 0 6 1 0 1 2 5 2 5 6 20 10 0 8 10 3 16 7 0 8 4 3 0 1 7 0 2 4 4 5 3 7 2 4 16 4 1 8 10 7 4 3 4 4 6 2 2 4 6 2 4 5 4 3 10 5 0 4 16 2 3 0 3 4 1 1 4 4 11 2 ...
result:
ok 40000 numbers
Test #4:
score: 0
Accepted
time: 37ms
memory: 18764kb
input:
20000 iijjijiijj fxffxfffxx kkiiiiiiii oppopopppo iiooiioooi gggxxxxggg oxxoxxxoox puuuppupuu ppssspspps eefffeefff xxtxxxttxt yyppypyppp kkwwkkwwkk bvvvbvbbbv attataaaat boooobbobo hhhhfhhhff nnhhhnhhhh cdccccdccd axxxaxaxxa qqnnnnnqnq eeexxeeeex ppkkkkkkkp uusussusss iwiwiiwiii gglgllgggg wwwrrrwr...
output:
40 58 93 52 52 57 56 34 44 46 52 46 57 47 41 47 87 48 56 52 65 47 86 56 61 50 51 34 58 41 52 47 60 92 61 56 64 55 65 48 56 77 80 62 55 57 41 58 44 93 63 49 54 59 50 55 111 58 52 52 39 35 63 50 111 84 140 75 78 40 99 56 49 40 68 45 87 54 47 59 52 59 50 86 82 54 48 59 33 121 84 44 33 40 62 55 46 121 6...
result:
ok 20000 numbers
Test #5:
score: 0
Accepted
time: 40ms
memory: 21412kb
input:
10000 jlljjjlllljjjjljllll uooooouuouoouoooouuo utttutuuttuuuutttutu xccxxxccxxccccxcxxxc sjjsjjsjjssjjsssjjjs fgffffgfgggfgfgfffgf ddaaadaadadddadadaaa tbbbbttttttbtttbtbtt eeeeeekkkekeeeekeeke dddddmdmmmmdddmmddmm yykkkkykkykykkkkyykk ededeedddededeedddee kktttkktktkktkkkttkk fcfcfcffffcffcccccfc ...
output:
339 332 348 341 662 367 363 432 395 371 452 460 353 472 416 420 464 365 589 476 516 407 446 376 501 364 354 424 366 438 330 590 553 491 662 317 467 374 422 406 492 484 405 328 396 654 300 410 447 404 389 487 534 688 489 370 396 474 396 467 364 424 380 236 480 506 506 339 297 316 457 626 338 349 351 ...
result:
ok 10000 numbers
Test #6:
score: -100
Wrong Answer
time: 53ms
memory: 23372kb
input:
4000 urrrrrrrrururrruruuuuuuuuruurruuruuuurrruurruurruu hthtthttthhhtttthhhhthhhhthhhttthtthhtthhtttttthhh ttssssssttsststttsttttssstsssstsstssttssststttstst iiniiiiiniinnniiniiiiniiiinnniiinniiininniinnnnnni dddpdpddpdpdppppdpdppdpdpddppppddddpdpdddppppdppdp mmmsmmmmsmmmmmmsmmmmsmmmmsssmmssmssmsmsm...
output:
5599 5287 4294 4818 5746 7893 3623 3453 5390 5812 5608 5541 6069 5655 3743 3847 4866 5059 3876 3925 5018 4379 5016 5747 5333 5271 3890 5894 5141 3773 4196 4880 5111 5510 4334 3825 6188 5960 4893 5359 4720 4167 4042 4051 5011 6457 3807 3837 4612 4859 5044 6861 4330 5967 5001 4857 4340 3957 4152 4230 ...
result:
wrong answer 331st numbers differ - expected: '5044', found: '5116'