numarare 5///

#include <iostream>

using namespace std;

int sumaCifre(int x)
{
    int s = 0;
    while (x)
    {
        s += (x % 10);
        x /= 10;
    }
    return s;
}
int main() {
    int n, a[201];
    cin>>n;

    for(int i = 0; i < n; i++)
        cin>>a[i];

    int nr = 0;
    for(int i = 0; i < n - 1; i ++)
        for(int j = i + 1; j < n; j++)
            if(sumaCifre(a[i]) == sumaCifre(a[j]))
                nr++;

    cout<<nr;
    return 0;
}

///

numararePIE

#include <iostream>

using namespace std;

int cmmdc(int a, int b)
{
    if(b == 0)
        return a;
    return cmmdc(b, a % b);
}
int main() {
    int n, a[201];
    cin>>n;

    for(int i = 0; i < n; i++)
        cin>>a[i];

    int nr = 0;
    for(int i = 0; i < n - 1; i++)
        for(int j = i; j < n; j++)
            if(cmmdc(a[i], a[j]) == 1)
                nr++;
    cout<<nr;
    return 0;
}
///

numarare 3

#include <iostream>

using namespace std;

int cmmdc(int a, int b)
{
    if(b == 0)
        return a;
    return cmmdc(b, a % b);
}

int main() {
    int n, a[201];
    cin>>n;

    for(int i = 0; i < n; i++)
        cin>>a[i];

    int st = 0, dr = n - 1;

    int nr = 0;
    while(st < dr)
    {
        if(st == n - dr - 1)
            if(cmmdc(a[st], a[dr]) == 1)
                nr++;
        st++;
        dr--;
    }
    cout<<nr;
    return 0;
}

///

numarare 7

#include <iostream>

using namespace std;

int main() {
    int n;
    double a[201];
    cin>>n;

    for(int i = 0; i < n; i++)
            cin>>a[i];
    double ls = a[0], ld = a[n - 1];

    if(ls > ld)
    {
        double aux = ls;
        ls = ld;
        ld = aux;
    }

    int nr = 0;
    for(int i = 0; i < n; i++)
        if(a[i] < ls || a[i] > ld)
            nr++;
    cout<<nr;
    return 0;
}

///

numarare2

#include <iostream>

using namespace std;

int main() {
    int n, a[201];
    cin>>n;

    double media_aritmetica = 0;
    for(int i = 0; i < n; i++)
    {
        cin>>a[i];
        media_aritmetica += a[i];
    }

    media_aritmetica /= n;

    int nr = 0;
    for(int i = 0; i < n; i++)
        if(a[i] > media_aritmetica)
            nr++;
    cout<<nr;
    return 0;
}

///

numarare6


#include <iostream>
#include <climits>
using namespace std;

int main() {
    int n, a[1001];
    cin>>n;

    int min = INT_MAX, max = INT_MIN;
    for(int i = 0; i < n; i++)
    {
        cin>>a[i];
        if(a[i] < min)
            min = a[i];

        if(a[i] > max)
            max = a[i];
    }

    int dif = max - min;

    int nr = 0;
    for(int i = 0; i < n; i++)
        if(a[i] == dif)
            nr++;

    cout<<nr;
    return 0;
}

///