Что не так с кодом расчета минимума

#include<iostream>
using namespace std;
int main()
{
    srand(time(NULL));
    const int N = 1;
    float arr[N];
    float min_1 = 100, min_2 = 100, answer = 0;
    cout << "Array: ";
    for (int i = 0; i < N; i++)
    {
        arr[i] = rand() % 100;
        cout << arr[i] << " ";
    }
    cout << endl;
    for (int i = 0; i < N; i++)
    {
        if (arr[i] < min_1)
        {
            min_1 = arr[i];
        }
    }
    min_1 = min_1 * 2;
    cout << "min2{ a1,a2, ...an } = " << min_1<<endl;
    for (int i = 12; i < (N*10)+2; i+=10)
    {
        if (arr[i] < min_2)
        {
            min_2 = arr[i];
        }
    }
    cout << "min{a12, a22,....an2} = " << min_2 <<endl;
    answer = ((min_1 * 2) - min_2);
    cout << endl <<"Answer: " << answer;
    return 0;
}

#include<iostream>
#include <ctime>
using namespace std;
int main()
{
    srand((unsigned)time(NULL));
    const int N = 10;
    double arr[N];
    //float min_1 = 100, min_2 = 100, answer = 0;
    cout << "Array: ";
    for (int i = 0; i < N; i++)
    {
        arr[i] = rand() % 100+1;
        cout << arr[i] << " ";
    }
    cout << endl;
    double min_1=arr[0];
    double min_2=arr[0]*arr[0];
    for (int i = 1; i < N; i++)
    {
        if (arr[i] < min_1)
            min_1 = arr[i];
        if (arr[i]*arr[i] < min_2)
            min_2 = arr[i]*arr[i];
    }
    cout << "min{ a1,a2, ...an } = " << min_1<<endl;
    cout << "min{a1^2, a2^2,....an^2} = " << min_2 <<endl;
    double answer = min_1 * 2.0 - min_2;
    cout << endl <<"Answer: " << answer;
    return 0;
}