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- #include <iostream>
- #include <algorithm>
- using namespace std;
- int main() {
- char A[] = {'a','b','c','d'};
- char B[] = {'a','b','x','d'};
- int i=0, j=0, flag,count=0;
- while(true){
- if(i >= 4)
- break;
- if(A[i]==B[j]){
- count++;
- i++;
- j++;
- flag=j;
- } else{
- j++;
- }
- if(j==4){
- i++;
- j=flag;
- }
- }
- cout<<count<<endl;
- return 0;
- }
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