#include <iostream>
#include <float.h>

double minimum( double n[], int len )
{
        double min = DBL_MAX;
        for ( int i = 0; i < len; ++i )
                if ( min > n[ i ] )
                        min = n[ i ];
        return min;
}

double maximum( double n[], int len )
{
        double max = DBL_MIN;
        for ( int i = 0; i < len; ++i )
                if ( max < n[ i ] )
                        max = n[ i ];
        return max;
}

double average( double n[], int len )
{
        double sum = 0;
        for ( int i = 0; i < len; ++i )
                sum += n[ i ];
        return sum / len;
}

int main( void )
{
        int n;
        const int howmany = 20;
        double nums[ howmany ];
        for ( n = 0; n < howmany && std::cin >> nums[ n ]; ++n )
                ;
        double min = minimum( nums, n );
        double max = maximum( nums, n );
        double ave = average( nums, n );
        
        if ( n > 0 )
                std::cout << n << " numbers: max = " << max
                          << " min = " << min
                          << " average = " << ave << '\n';
}