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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
#853035#8701. BorderChiFAN23 5ms3952kbC++143.6kb2025-01-11 15:22:492025-01-11 15:22:50

Judging History

你现在查看的是最新测评结果

  • [2025-01-11 15:22:50]
  • 评测
  • 测评结果:23
  • 用时:5ms
  • 内存:3952kb
  • [2025-01-11 15:22:49]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int mod = 998244353;
const int maxn = 2e6+114;
mt19937 rd(time(0));
int to[26];
int qpow(int a,int b){
    if(b==0) return 1;
    if(b==1) return a;
    int res=qpow(a,b/2);
    res=res*res%mod;
    if(b%2==1) res=res*a%mod;
    return res;
}
vector<int> solve(string s,string t){
    vector<int> S,T;
    int n=s.size();
    S.resize(n+1),T.resize(n+1);
    for(int i=1;i<=n;i++) S[i]=to[s[i-1]-'a'],T[i]=to[t[i-1]-'a'];
    vector<int> v1,v2,v3;
    v1.resize(n+1);
    v2.resize(n+1);
    v3.resize(n+1);
    vector<int> ans;
    ans.resize(n+1);
    for(int i=1;i<=n;i++){
        v1[i]=(v1[i-1]+S[i])%mod;
        v2[i]=(v2[i-1]+S[i]*S[i]%mod)%mod;
        v3[i]=(v3[i-1]+S[i]*i%mod)%mod;
    }
    vector<int> suf;
    suf.resize(n+1);
    for(int i=1;i<n;i++){
        vector<int> pos;
        bool flag=true;
        for(int j=2;i*(j-1)+1<=n;j++){
            if(pos.size()==2){
                flag=false;
                break;
            }
            int L=(j-1)*i+1,R=j*i;
            int l=1,r=i;
            if(R>n){
                int c=R-n;
                R-=c,r-=c;
            }
            //cout<<i<<' '<<l<<' '<<r<<' '<<L<<' '<<R<<'\n';
            if((v3[r]+mod-v3[l-1])%mod==((v3[R]+mod-v3[L-1])%mod+mod-(L-l)*((v1[R]+mod-v1[L-1])%mod)%mod)%mod) continue;
            else{
                int c1=(v2[r]+v2[L-1]+2*mod-v2[l-1]-v2[R])%mod,c2=(v1[r]+v1[L-1]+2*mod-v1[l-1]-v1[R])%mod;
                c1=c1*qpow(c2,mod-2)%mod;
                int x=(c1+c2)*((mod+1)/2)%mod;
                int y=(c1+mod-c2)%mod*((mod+1)/2)%mod;
                int c3=(v3[R]+mod-v3[L-1])%mod;
                c3=(c3+mod-(L-l)*((v1[R]+mod-v1[L-1])%mod)%mod)%mod;
                int pd=((v3[r]+mod-v3[l-1])%mod+mod-c3)%mod;
                int p=pd*qpow((x+mod-y)%mod,mod-2)%mod;
                if(p<1||p>n){
                    flag=false;
                    break;
                }
                if(S[p]!=x){
                    flag=false;
                    break;
                }
                if(p+(L-l)>n){
                    flag=false;
                    break;
                }
                if(S[p+(L-l)]!=y){
                    flag=false;
                    break;
                }
                if(pd!=p*((x+mod-y)%mod)%mod){
                    flag=false;
                    break;
                }
                if(T[p+(L-l)]!=x){
                    flag=false;
                    break;
                }
                pos.push_back(p+(L-l));
            }
        }
        if(flag==false) continue;
        if(pos.size()==1){
            ans[pos[0]]=max(ans[pos[0]],n-i);
        }else if(pos.size()==0&&i*2>n){
            suf[i]=max(suf[i],n-i);
        }
    }
    for(int i=n-1;i>=1;i--) suf[i]=max(suf[i],suf[i+1]);
    for(int i=1;i<=n;i++) ans[i]=max(ans[i],suf[max(i,n-i+1)]);
    return ans;
}
signed main(){
    for(int i=0;i<26;i++) to[i]=rd()%mod;
    ios::sync_with_stdio(0);
    cin.tie(0),cout.tie(0);
    string s,t;
    cin>>s>>t;
    vector<int> ans=solve(s,t);
    reverse(s.begin(),s.end());
    reverse(t.begin(),t.end());
    vector<int> oth=solve(s,t);
    reverse(oth.begin(),oth.end());
    vector<int> nxt;
    nxt.resize(s.size());
    nxt[0]=-1;
    for(int i=1;i<s.size();i++){
        int z=nxt[i-1];
        while(s[z+1]!=s[i]&&z>-1) z=nxt[z];
        if(s[z+1]==s[i]) nxt[i]=z;
    }
    for(int i=0;i<s.size();i++){
        if(s[i]==t[i]) cout<<nxt[s.size()-1]<<'\n';
        else cout<<max(ans[i+1],oth[i])<<'\n';
    }
    return 0;
}

详细

Subtask #1:

score: 23
Accepted

Test #1:

score: 23
Accepted
time: 0ms
memory: 3652kb

input:

cbaababaabacbaababaabacbaabacbaababaabacbaaba
dabbababbabaabbafabbgbaabfebaabzababbayaabcac

output:

0
0
0
0
0
0
6
6
6
6
6
6
6
6
6
6
6
17
17
17
17
17
17
17
17
17
17
17
6
6
6
6
6
6
6
6
6
6
6
0
0
0
3
0
1

result:

ok 45 numbers

Test #2:

score: 23
Accepted
time: 0ms
memory: 3652kb

input:

cbaababaabacbaabadbaababaabacbaabacbaaba
aabwaxjbbabtalbabcasbabibbabaabbabaabiac

output:

3
0
0
0
0
0
6
6
6
6
6
6
6
6
6
6
6
23
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
0
0
0
0
0
1

result:

ok 40 numbers

Test #3:

score: 23
Accepted
time: 0ms
memory: 3952kb

input:

cadaabacabacabacabaabacabacadaabacabacaba
bbbbbabtbabababalalbawababababbaoababebdc

output:

2
0
4
0
0
0
0
0
0
0
0
0
0
0
0
15
15
15
15
15
15
15
15
15
15
15
0
0
0
0
0
0
0
0
0
0
0
0
0
4
1

result:

ok 41 numbers

Test #4:

score: 23
Accepted
time: 0ms
memory: 3720kb

input:

dabacbaadcbaadabacbaadabecbaadcbaadabacbaadabacbaa
ababaabbyaarbabfbvdbuaoaaaabbaaabbababaabbababqadd

output:

2
0
0
0
0
0
0
0
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
29
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
0
0
0
0
0
0
2
1

result:

ok 50 numbers

Test #5:

score: 23
Accepted
time: 0ms
memory: 3716kb

input:

edacbcacacbcaecbcacacbcadacbcacacbca
sabaaabtbaaabaaalblbawaeabaaababoaae

output:

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
13
0
0
0
0
0
0
0
0
0
0
0
1

result:

ok 36 numbers

Test #6:

score: 23
Accepted
time: 0ms
memory: 3720kb

input:

cbaababaabacbaabacbaabdbaabacbaabacbaaba
aabbababbaoaabbxbaabbaqabbabltbpagaabcac

output:

3
0
0
0
0
0
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
0
0
0
3
0
1

result:

ok 40 numbers

Subtask #2:

score: 0
Wrong Answer

Dependency #1:

100%
Accepted

Test #7:

score: 0
Wrong Answer
time: 5ms
memory: 3852kb

input:

abacadcabbacabbacabcabbacabacabbacabbacabcabbacabbacadcabbacabbacabcabbacabacabbacabbacabcabbacabbacadcabbacabbacabcabbacababacadcabbacabbacabcabbacabacabbacabbacabcabbacabbacadcabbacabbacaecabbacabacabbacabbacabcabbacabbacadcabbacabbacabcabbacababacadcabbacabbacabcabbacabacabbacabbacabcabbacabbacad...

output:

27
0
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75...

result:

wrong answer 1485th numbers differ - expected: '717', found: '0'

Subtask #3:

score: 0
Skipped

Dependency #1:

100%
Accepted

Dependency #2:

0%

Subtask #4:

score: 0
Skipped

Dependency #1:

100%
Accepted

Dependency #2:

0%