#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ /*find第一次出现*/ /*substr截取*/ /*insert插入*/ /*replace替换*/ /*erase删除*/ string s,S; cin>>s>>S; for(int i=0;i<s.size();i++){ if(s[i]>='a'&&s[i]<='z'){ s[i]=S[s[i]-'a']; cout<<s[i]; }else{ s[i]=S[s[i]-'A']-32; cout<<s[i]; } } return 0; }