30:字符环

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6

 1 #include<iostream>
 2 #include<cstdio>
 3 #include<cstdlib>
 4 #include<algorithm>
 5 #include<cstring>
 6 #include<cmath>
 7 #include<stdio.h>
 8 #include<string.h>
 9 #include<iomanip>
10 using namespace std;
11 string a,b;
12 int ans=0,tmp=0,x;
13 int main() {
14     cin>>a>>b;
15     int la=a.length();
16     int lb=b.length();
17     a+=a;
18     b+=b;
19     x=min(la,lb);
20     for(int i=0; i<la; i++)
21         for(int j=0; j<lb; j++) {
22             while(a[i+tmp]==b[j+tmp]&&tmp<=x)
23                 tmp++;
24             ans=max(ans,tmp);
25             tmp=0;
26         }
27     ans=min(ans,la);
28     ans=min(ans,lb);
29     printf("%d\n",ans);
30     return 0;
31 }