#include<bits/stdc++.h>
using namespace std;
string s;
int a[5];
int main(){
	cin>>s;int s1 = s.size();
	for(int i=0;i<s1;i++) a[i] = s[i] - 'A';
	sort(a,a+3);
	if(a[0] != 0 || a[1] != 1 || a[2] != 2) cout<<"No";
	else cout<<"Yes";
}