#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define getrp() ({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);})
#define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define wt(v) ({ulong _z=v;do*--wp=_z%10+48;while(_z/=10);})
#define rep(v,e) for(long v=0;v<e;++v)

typedef unsigned long ulong;

int a[100000];

int main(){
	int bx=0;
	int bf=200000;
	long n;
	{
		char*rp=getrp();
		n=rd();
		rep(i,n){
			a[i]=rd();
		}
	}
	{
		for(int x=1;x<n*2;++x){
			int o=(bf+x)/(x+1);
			int lf=o-1;
			if(!lf){
				break;
			}
			int q[64];
			int qn=0;
			q[qn++]=0;
			q[qn++]=n-1;
			while(qn){
				int r=q[--qn];
				int l=q[--qn];
				int ar=a[r]/x*x;
				while(a[l]<ar){
					if(l+1==r||a[l]>=ar-x){
						if(!--lf){
							goto hoge;
						}
						break;
					}
					q[qn++]=l;
					q[qn++]=l=l+r>>1;
				}
			}
			bf=(o-lf)*(x+1);
			bx=x;
			hoge:;
		}
	}
	{
		char wbuf[64],*wp=wbuf+sizeof wbuf;
		*--wp='\n';
		wt(bf);
		*--wp='\n';
		wt(bx);
		write(1,wp,wbuf+sizeof wbuf-wp);
	}
	_exit(0);
}