// dfmt off
T lread(T=long)(){return readln.chomp.to!T;}T[] lreads(T=long)(long n){return iota(n).map!((_)=>lread!T).array;}
T[] aryread(T=long)(){return readln.split.to!(T[]);}void arywrite(T)(T a){a.map!text.join(' ').writeln;}
void scan(L...)(ref L A){auto l=readln.split;foreach(i,T;L){A[i]=l[i].to!T;}}alias sread=()=>readln.chomp();
void dprint(L...)(lazy L A){debug{auto l=new string[](L.length);static foreach(i,a;A)l[i]=a.text;arywrite(l);}}
static immutable MOD=10^^9+7;alias PQueue(T,alias l="b<a")=BinaryHeap!(Array!T,l);import std, core.bitop;
// dfmt on

void main()
{
    long N = lread();
    auto A = aryread();
    long mv = A[0];
    long mi;
    foreach (i; 0 .. N)
        if (abs(mv) < abs(A[i]))
        {
            mv = A[i];
            mi = i;
        }
    writeln(2 * N);
    if (mv < 0)
    {
        foreach (i; 0 .. N)
        {
            writefln("%s %s", mi + 1, i + 1);
        }
        foreach_reverse (i; 1 .. N)
        {
            writefln("%s %s", i + 1, i);
        }
    }
    else
    {
        foreach (i; 0 .. N)
        {
            writefln("%s %s", mi + 1, i + 1);
        }
        foreach (i; 0 .. N - 1)
        {
            writefln("%s %s", i + 1, i + 2);
        }
    }
}
