Spiraali

n,t = [int(x) for x in input().split()]
sijainnit = []
x_arvot = []
y_arvot = []
for i in range(t):
    x, y = [int(x) for x in input().split()]
    sijainnit.append((x,y))
    x_arvot.append(x)
    y_arvot.append(y)
spiraali = {}
x = 1
y = 1
z = 1
while True:
    if y in y_arvot:
        for i in range(x, n - x + 2):
            spiraali [i,y] = z
            z += 1
    else:
        z += (n - 2 * x + 2)
    x = n - x + 1
    if x in x_arvot:
        for i in range(y+1, n - y + 2):
            spiraali [x,i] = z
            z += 1
    else:
        z += (n - 2 * y + 1)
    y = n - y + 1
    x -= 1
    if y in y_arvot:
        for i in range(x, n-x-1, -1):
            spiraali [i,y] = z
            z += 1
    else:
        z += (2 * x - n + 1)
    x = n-x
    y -= 1
    if x in x_arvot:
        for i in range(y, n-y, -1):
            spiraali [x,i] = z
            z += 1
    else:
        z += (2 * y - n)
    y = n-y+1
    x += 1
    if z >= n ** 2:
        break
for x,y in sijainnit:
    print(spiraali[x,y])

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: TIME LIMIT EXCEEDED