#include<stdio.h> #include<string.h> int main() { char a[100]; int i; scanf("%s",a); for(i=0;a[i];i++) { if(a[i]>='a' && a[i]<='z'|| a[i]>='A' && a[i]<='Z') printf("%c",a[i]); } printf("\n"); }
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