#include <iostream>
#include <cmath>
#include <cstdio>
#include <algorithm>
using namespace std;
int main() {
long long int n, a, ma=0, cnt=0;
scanf("%lld", &n);
for(int i=0; i<n; i++) {
scanf("%lld", &a);
if(a>ma) ma=a;
cnt+=a;
}
a=ceil((double)cnt/(n-1)), a=max(a, ma);
printf("%lld", a);
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8Y21hdGg+CiNpbmNsdWRlIDxjc3RkaW8+CiNpbmNsdWRlIDxhbGdvcml0aG0+CnVzaW5nIG5hbWVzcGFjZSBzdGQ7CgppbnQgbWFpbigpIHsKCWxvbmcgbG9uZyBpbnQgbiwgYSwgbWE9MCwgY250PTA7CglzY2FuZigiJWxsZCIsICZuKTsKCWZvcihpbnQgaT0wOyBpPG47IGkrKykgewoJCXNjYW5mKCIlbGxkIiwgJmEpOwoJCWlmKGE+bWEpIG1hPWE7CgkJY250Kz1hOwoJfQoJYT1jZWlsKChkb3VibGUpY250LyhuLTEpKSwgYT1tYXgoYSwgbWEpOwoJcHJpbnRmKCIlbGxkIiwgYSk7CglyZXR1cm4gMDsKfQ==