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| #include <bits/stdc++.h>
#define ll long long
#define ld long double
#define N 24
#define FOR(i,n) for(int i=0;i<n;i++)
using namespace std;
int n;
int main(){
while(cin>>n){
set<int>s;
for(int i=0;i<n;i++){
int x;cin>>x;
s.insert(x);
}
int maxn = *(--s.end());
int minn = *s.begin();
if(s.size()==maxn-minn+1)cout<<minn<<" "<<maxn<<" yes"<<endl;
else cout<<minn<<" "<<maxn<<" no"<<endl;
}
}
|