#include <stdio.h>
#include<math.h>
#include<string.h>
#include<stdlib.h>

int main()
{
    double Tc=0;
    double Tf=0;
    int lowerbound = 1;
    int upperbound = 15;
    int i = upperbound;
    while (i >= lowerbound)
    {
        Tf=20*i;
        Tc=((5.0*Tf)-(5.0*32.0))/9.0;
        printf("%.2f\t%.2f\n", Tf, Tc);
        i--;
    }
    printf("1.000000    %f\n",((5.0*1)-(5.0*32.0))/9.0);
    return 0;
}