def ptAdd(pt1,pt2):
    return [pt1[0]+pt2[0],pt1[1]+pt2[1]]

def ptSub(pt1,pt2):
    return [pt1[0]-pt2[0],pt1[1]-pt2[1]]

def antennae(arr):
    out = {}
    for i in range(0,len(arr)):
        for j in range(0,len(arr[i])):
            if arr[i][j] != ".":
                if arr[i][j] in out:
                    out[arr[i][j]].append([i,j])
                else:
                    out[arr[i][j]] = [[i,j]]
    return out

def antinodes(antennae):
    out = []
    for a in antennae:
        for i in range(0,len(antennae[a])):
            for j in range(1,len(antennae[a])):
                pt1 = antennae[a][i]
                pt2 = antennae[a][j]
                an1 = ptAdd(pt1,ptSub(pt1,pt2))
                an2 = ptAdd(pt2,ptSub(pt2,pt1))
                if an2 not in out and an2[0] >= 0 and an2[1] >= 0 and an2[0] < 50 and an2[1] < 50:
                    out.append(an2)
                if an1 not in out and an1[0] >= 0 and an1[1] >= 0 and an1[0] < 50 and an1[1] < 50:
                    out.append(an1)
    return out

arr = []
with open("input08.txt") as file:
    for line in file:
        arr.append([])
        for a in line[:-1]:
            arr[-1].append(a)
print(len(antinodes(antennae(arr))))