# include<iostream> # include<cmath> using namespace std; int n，temp=0; int a[1002]; int Min=1000000000,I=0,J=0; int main(){ cin>>n; for(int i=1;i<=n;i++) cin>>a[i]; for(int i=1;i<=n;i++){ for(int j=i+1;j<=n;j++){ if(a[j]-a[i]<0) temp=(a[j]-a[i])*-1; else temp=(a[j]-a[i])*-1; if(temp<Min){ Min=temp; I=i; J=j; } } } cout<<I<<' '<<J; return 0; }