#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define q long double
#define l long long
#define u unsigned long long
#define g string
#define z char
#define o bool
const l INF = 0x3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f;
const l NINF = -0x3f3f3f3f3f3f3f3f3f3f3f3f3f3f3f;
const l N = 1e6 + 10, M = 2e6 + 10;
const l mod=998244353;
l n,a[M];
signed main(void)
{
	system("color CE");
	cin>>n;
	for(l i=1;i<=n;i++){
		cin>>a[i];
	}
	for(l i=2;i<=n;i++){
		if(a[i]>a[i-1]){
			if(i==2){
				for(l j=a[i-1];j<=a[i];j++){
					cout<<j<<" ";
				}
			}else{
				for(l j=a[i-1]+1;j<=a[i];j++){
					cout<<j<<" ";
				}
			}
		}else{
			for(l j=a[i-1]-1;j>=a[i];j--){
				cout<<j<<" ";
			}
		}
	}
	system("color AC");
	return 0;
}

样例对了但WA了（T_T） 求各位大佬找找茬