#include<bits/stdc++.h>
#define rp(i,a,b) for(int i=(a);i<=(b);++i)
using namespace std;
template<typename T>void rd(T&x){
	x=0;int f=1;char c=getchar();
	while(c<'0'||c>'9'){if(c=='-')f=-1;c=getchar();}
	while(c>='0'&&c<='9'){x=x*10+c-48;c=getchar();}
	x*=f;
}
template<typename T,typename...T2>void rd(T&x,T2&...y){rd(x),rd(y...);}

int bit[32];

int main() {
    int n;
    rd(n);
    rp(i, 1, n) {
        int x;
        rd(x);
        ++bit[__lg(x)];
    }
    int ans = 0;
    rp(i, 0, 31) {
        ans = max(ans, bit[i]);
    }
    printf("%d", ans);
}