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#include <bits/stdc++.h>
#define PB push_back
#define ST first
#define ND second
#define _ ios_base::sync_with_stdio(0); cin.tie(0);
//mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

using namespace std;

using ll = long long;
using pi = pair<int,int>;
using vi = vector<int>;

const int nax = 22;
int n;
int p[nax];
int ans[nax][nax*nax];
int cnt[(1<<nax)];

int main() {_
	cin>>n;
	for(int i=0; i<n; i++) {
		cin>>p[i];
	}
	for(int i=1; i<(1<<n); i++) {
		int b = 0;
		for(int j=0; j<n; j++) if((1<<j)&i) b=j;
		cnt[i] = cnt[i^(1<<b)];
		for(int j=0; j<n; j++) {
			if((1<<j)&i) {
				if(p[j]>p[b]) cnt[i]++;
			}
		}
		ans[__builtin_popcount(i)][cnt[i]]++;
	}
	for(int i=1; i<=n; i++) {
		for(int j=0; j<n*(n-1); j++) {
			if(ans[i][j]>0) {
				cout<<j<<" "<<ans[i][j]<<"\n";
				break;
			}
		}
	}
}