继续暴力出奇迹
#include <bits/stdc++.h>
using namespace std;
const int N =1e5 + 10;
int a[N];
int main() {
int n;
scanf("%d", &n);
int t;
int l = 0, r = 0;
while(~scanf("%d", &t)) {
a[t] ++;
l = min(l, t);
r = max(t, r);
}
int ans1 = l, ans2 = l;
for (int i = l; i <= r; i ++) {
if (a[i] == 2) ans2 = i;
if (a[i] == 0) ans1 = i;
}
printf("%d %d", ans1, ans2);
return 0;
}