/*
    quid-pro-quo: LOGIC for AC
    written by: codercell07
    LANG: C++ 11
    Problem: random
*/
#include<bits/stdc++.h>
#define fastio ios::sync_with_stdio(false); cin.tie(NULL)
#define testcases freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout)
#define ui unsigned int
#define ll long long
#define pb push_back
#define vi vector<int>
#define vvi vector<vector<int>>
#define vll vector<ll>
#define vvll vector<vector<ll>>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define sz(x) (int)x.size()
#define pq priority_queue /*maxim at top(max-heap)*/
#define pqmax priority_queue<int, vector<int>, greater<int>> /*minim at top(min-heap)*/
#define mp make_pair
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define asc(x) sort(all(x))
#define desc(x) sort(all(x), greater<int>())
#define time_el (double)time/CLOCKS_PER_SEC
using namespace std;
const int MAX=2e6; //dummy, make sure change as per constraints
const ll M=1e9+7, inf=1e18;
const char nl='\n';
 
ll apbmc(ll a, ll b, ll c){ a%=c; ll res=1; while(b){ if(b&1) res=res*a%c; a=a*a%c; b>>=1; } return res;}
ll apb(ll x, ll y){ ll temp; if(y==0) return 1;  temp=apb(x, y/2); if(y%2==0) return temp*temp;  else return temp*temp*x;}

void solve(){
    //clock_t time;
    ll n; cin>>n;
    vll v(n);
    for(ll &i: v)cin>>i;
    ll md=0;
    for(ll i: v) md+=abs(i);
    ll ed=0;
    for(ll i: v) ed+=(i*i);
    ll cd=INT_MIN;
    for(ll i=0; i<n; i++){
        ll tmp=abs(v[i]);
        cd=max(cd, tmp);
    }
    cout<<md<<nl;
    cout<<sqrt(ed)<<nl;
    cout<<cd;
}
 
int main(){
    fastio;
    // #ifndef ONLINE_JUDGE
    //     testcases;
    // #endif // !DEBUG
    cout<<fixed<<setprecision(15);
    
    //int t; cin>>t; while(t--) solve();
    solve();
 
    return 0;
}
//points to check:
//  * check for constraints, mainly array!
//  * EDGE CASES
//  * check for integer overflow, use long long!
//  * learn, do, solve, share something, NOW!
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef int64_t i6;
typedef std::vector<std::vector<int64_t> > Graph;

#define rep(i, n) for (int64_t i = 0; i < n; ++i)
#define rep2(i, n) for (int64_t i = 1; i <= n; ++i)
#define repb(i, l, n) for (int64_t i = l; i < n; ++i)
#define repb2(i, l, n) for (int64_t i = l; i <= n; ++i)
#define repe(a, b) for (auto&(a) : (b))
#define ALL(v) (v).begin(), (v).end()
#define Sort(x) sort(ALL(x))
#define Sort_rev(x) Sort(x);reverse(ALL(x))
#define mp(a, b) make_pair((a), (b))
#define Push_back(a, b) push_back( mp( (a), (b) ) )

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1;  } return 0;  }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1;  } return 0;  }
template<typename V,typename T> bool find_num(V v, T num) { if ( find(ALL(v), num) == v.end() ) { return false; } return true; }

const int inf = 0x3fffffff;
const int64_t INF = 0x3fffffffffffffff;
const int64_t MOD = 1e9+7;

int main() {
    int64_t n;
    cin >> n;
    std::vector<int64_t> x(n);
    int64_t man = 0, t = 0;
    long double euclid = 0;
    rep(i, n) {
        cin >> x[i];
        man += abs(x[i]);
        euclid += abs(x[i])*abs(x[i]);
        chmax(t, abs(x[i]));
    }
    euclid = sqrt(euclid);
    cout << man << endl;
    cout << setprecision(20) << euclid << endl;
    cout << t << endl;
    return 0;
}
