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- #include <iostream>
- #include <cstring>
- using namespace std;
- int main() {
- string str,sub,ans;
- cin >> str >> sub;
- int ix;
- cin >> ix;
- int len1=str.size(),len2=sub.size();
- for(int i=0 ; i<ix ; i++)
- ans[i]=str[i];
- for(int i=ix ; i<len2+ix ; i++) {
- ans[i]=sub[i];
- }
- for(int i=ix+len2 ; i<len1+len2 ; i++) {
- ans[i]=str[i-len2];
- }
- cout << ans;
- }
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