#include<iostream> #include<cstdio> #include<cmath> using namespace std; int main() { int n,m; int a[1005],i,j,d; cin>>n; for(i=1;i<=n;i++){ cin>>a[i]; }int mina,minb,e; e=abs(a[1]-a[0]); mina=1; minb=2; for(i=1;i<=n;i++){ for(j=i+1;j<=n;j++){ if(a[i]-a[i]<e){ e=abs(a[i]-a[i]); mina=i; minb=j; } } } cout<<mina<<" "<<minb<<endl; return 0; }