#include<stdio.h> #include<cstdlib> #include<cmath> #include<iostream> #include<algorithm> #include<string> using namespace std; typedef long long ll; int main(){ string c; cin>>c; for(int i=0;i<c.length();i++){ if(((c[i]>='A')&&(c[i]<='Z'))||((c[i]>='a')&&(c[i]<='z'))) cout<<c[i]; } printf("\n"); return 0; } |
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