#include<iostream> #include<cstring> #include<string> #include<cstdio> #include<cmath> using namespace std; int main() { char s[1000]; scanf("%s",&s); int len = strlen(s); for(int i=0;i<len;i++) { if( (s[i]>='a' && s[i]<='z') || (s[i]>='A'&&s[i]<='Z')) { cout<<s[i]; } } cout<<endl; return 0; } |
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