Page 3

/*
======================
[     ___T_          ]
[    | 6=6 | =>HI :-)]
[    |__o__|         ]
[ >===]__o[===<      ]
[     [o__]          ]
[      .".           ]
[      |_|           ]
[                    ]
======================
 */

#include<bits/stdc++.h>
using namespace std;
using lli = int64_t;
void print(){
    for(int i = 1; i <= 10; i++){
        cout << i << " ";
    }
    for(int i = 9; i >= 1; i--){
        cout << i << " ";
    }
}
int main(){
     ios::sync_with_stdio(false);
     cin.tie(nullptr);
     cout.tie(nullptr);
     print();
}


/*
======================
[     ___T_          ]
[    | 6=6 | =>HI :-)]
[    |__o__|         ]
[ >===]__o[===<      ]
[     [o__]          ]
[      .".           ]
[      |_|           ]
[                    ]
======================
 */

#include<bits/stdc++.h>
using namespace std;
using lli = int64_t;
const int maxN = 10000;
int occurence[maxN];
void print_duplicates(int input[],int n){
    for(int i = 1; i <= n; i++){
        occurence[input[i]] += 1;
        if(occurence[input[i]] == 2){
            cout << input[i] << " ";
        }
    }
}
int main(){
     ios::sync_with_stdio(false);
     cin.tie(nullptr);
     cout.tie(nullptr);
     int n;
     cin >> n;
     int input[n + 1];
     for(int i = 1; i <= n; i++){
         cin >> input[i];
     }
     print_duplicates(input,n);
}


/*
======================
[     ___T_          ]
[    | 6=6 | =>HI :-)]
[    |__o__|         ]
[ >===]__o[===<      ]
[     [o__]          ]
[      .".           ]
[      |_|           ]
[                    ]
======================
 */

#include<bits/stdc++.h>
using namespace std;
using lli = int64_t;
#define filein freopen ("in.txt", "r", stdin)
void print_file(){
    filein;
    int n;
    int sum = 0;
    while(cin >> n){
        sum += n;
    }
    cout << sum;
}
int main(){
     ios::sync_with_stdio(false);
     cin.tie(nullptr);
     cout.tie(nullptr);
     print_file();
}