#include <stdio.h>
    #include <math.h>
    int main()
    {
    int x, y, size=20;
    for (x=0; x<size; x++)
    {
    for (y=0; y<=4*size; y++)
    {
    double dist1 = sqrt( pow(x-size,2) + pow(y-size,2) );
    double dist2 = sqrt( pow(x-size,2) + pow(y-3*size,2) );
    if (dist1 < size + 0.5 || dist2 < size + 0.5 )
    printf("%c",97);
    else
    printf(" ");
    }
    printf("\n");
    }
    for (x = 1; x <= 2*size; x++)
    {
    for (y=0; y<x; y++)
    printf(" ");
    for (y=0; y<4*size + 1 - 2*x; y++)
    printf("%c",86);
    printf("\n");
    }

    return 0;
    }