AC代码如下:
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
long long h[100010];
int main(){
int N;
int ans;
while( scanf( "%d", &N ) != EOF ){
for( int i = 1; i <= N; i++ ){
scanf( "%lld", h + i );
}
ans = 1;
for( int i = 2; i <= N - 1; i++ ){
if( abs( h[i+1] - h[i] ) > abs( h[ans+1] - h[ans] ) ){
ans = i;
}
}
cout << ans << " " << ans + 1 << endl;
}
return 0;
}