https://www.luogu.com.cn/problem/P1199

#include<iostream>
using namespace std;
int main(){
	int n, a[505][505], x1=-114514, x2=-1919810, ans=-114514;
	cin>>n;
	for(int i=1;i<n;i++){
		x2=0;
		x1=0;
		for(int j=i;j<n;j++){
			cin>>a[i][j];
			a[j][i]=a[i][j];
		}
		for(int j=1;j<n;j++){
			if(a[i][j]>x1){
				x2=x1;
				x1=a[i][j];
			}
		}
		ans=max(ans, x2);
	}
	cout<<1<<endl<<ans;
}