不理解

同样的效果，为什么下面那段代码不能通过？

#include<bits/stdc++.h>
using namespace std;
int a,n[200000],min1 = 2e9;
int main(){
	cin>>a;
	for(int i = 1;i <= a;i++){
        cin>>n[i];
        if(i != 1)
        	min1 = min(abs(n[i] - n[i - 1]),min1);
	}
	cout<<min1;
	return 0;
}










#include<bits/stdc++.h>
using namespace std;
int N;
long long A;
long long minn = INT64_MAX,maxx = INT64_MIN;
int main(){
	scanf("%d",&N);
	for(int i = 0;i < N;i++){
		cin>>A;
		minn = min(minn,A);
		maxx = max(maxx,A);
	}
	cout<<maxx - minn;
	return 0;
}