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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#724292#5312. Levenshtein DistancehouburWA 1442ms4828kbC++141.7kb2024-11-08 11:42:502024-11-08 11:42:59

Judging History

你现在查看的是最新测评结果

  • [2024-11-08 11:42:59]
  • 评测
  • 测评结果:WA
  • 用时:1442ms
  • 内存:4828kb
  • [2024-11-08 11:42:50]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ull unsigned long long
const int N=5e4+5,bs=237;
int n,m,k;
int x,y,z,l,r,ans[N];
string s,t;
int f[35][101];
//f[i][j]表示编辑距离小于等于i,匹配上的字符串|s|-|t|=j,最大能延伸到的位置为f[i][j]
//因为j<=k,所以状态数最多只会有k^2个转移直接效仿求编辑距离的转移就好
ull hss[N],hst[N],a[N];
inline ull get_hashs(int l,int r){return hss[r]-hss[l-1]*a[r-l+1];}
inline ull get_hasht(int l,int r){return hst[r]-hst[l-1]*a[r-l+1];}
inline bool check(int x,int y,int len){return get_hashs(x,x+len-1)==get_hasht(y,y+len-1);}
inline int LCP(int x,int y){
	int l=1,r=min(n-x+1,m-y+1),res=0;
	while(l<=r){
		int mid=(l+r)>>1;
		if(check(x,y,mid))l=mid+1,res=mid;
		else r=mid-1;
	}return res;
}
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
	cin>>k;
	cin>>s>>t;
	n=s.size();m=t.size();
	s=' '+s;t=' '+t;a[0]=1;
	for(int i=1;i<=max(n,m);i++)a[i]=a[i-1]*bs;
	for(int i=1;i<=n;i++)hss[i]=hss[i-1]*bs+s[i];
	for(int i=1;i<=m;i++)hst[i]=hst[i-1]*bs+t[i];
	for(int st=1;st<=m;st++){
		for(int i=0;i<=k;i++)for(int j=-i;j<=i;j++)f[i][j+k]=0;
		f[0][k]=0;
		for(int i=0;i<=k;i++){
			for(int j=-i;j<=i;j++){
				f[i][j+k]+=LCP(f[i][j+k]+1,st+f[i][j+k]+j);
				if(i!=k){
					f[i+1][j+k-1]=max(f[i+1][j+k-1],min(n,f[i][j+k]+1));
					f[i+1][j+k]=max(f[i+1][j+k],min(f[i][j+k]+1,n));
					f[i+1][j+k+1]=max(f[i+1][j+k+1],f[i][j+k]);
				}
			}
		}
		for(int j=-k;j<=k;j++){
			if(j+n<=0||j+n>m-st+1)continue;
			for(int i=0;i<=k;i++){
				if(f[i][j+k]==n){ans[i]++;break;}
			}
		}
	}	
	for(int i=0;i<=k;i++)cout<<ans[i]<<"\n";
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3552kb

input:

4
aaa
aabbaab

output:

0
5
15
7
1

result:

ok 5 number(s): "0 5 15 7 1"

Test #2:

score: 0
Accepted
time: 1442ms
memory: 4828kb

input:

30
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

output:

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

result:

ok 31 numbers

Test #3:

score: -100
Wrong Answer
time: 352ms
memory: 4784kb

input:

30
BBAAABAABBBA
ABBABBBBAABAAAABABBBAABAABBAABAAAAAABAABABBAAAABAAAAABABAABAABBABBAAAABBBBAABBABAAABAABAABBBBBABBABABBBBABBBBAAABBABABBBBAAABBBBAAAABABABABABABABAAABBBBBAABAABAABBAABBBAABBBBBBBABAABAABAABABAABAAABAABBBAABABBABBAAABAAAABABABBABBBAAABBBAAAABBBBABABABAABAABBBBBBBBBAABBBABABBBABAABBABBA...

output:

15
638
7828
45968
141845
255695
308984
304359
275158
237448
207961
202538
108200
104474
101488
99036
96971
95377
94094
93063
92252
91692
91234
90877
90626
90436
90302
90194
90129
90082
90037

result:

wrong answer 1st numbers differ - expected: '17', found: '15'