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))
    if x in x_arvot:
        x_arvot[x].append(y)
    else:
        x_arvot[x] = [y]
    if y in y_arvot:
        y_arvot[y].append(x)
    else:
        y_arvot[y] = [x]
spiraali = {}
x = 1
y = 1
z = 1
while True:
    if y in y_arvot:
        for i in y_arvot[y]:
            if x <= i < (n - x + 2):
                spiraali[i,y] = (z + i - x)
    z += (n - 2 * x + 2)
    x = n - x + 1
    if x in x_arvot:
        for i in x_arvot[x]:
            if (y + 1) <= i < (n - y + 2):
                spiraali [x,i] = (z + i - y - 1)
    z += (n - 2 * y + 1)
    y = n - y + 1
    x -= 1
    if y in y_arvot:
        for i in y_arvot[y]:
            if x >= i > (n - x - 1):
                spiraali[i,y] = (z + x - i)
    z += (2 * x - n + 1)  
    x = n-x
    y -= 1
    if x in x_arvot:
        for i in x_arvot[x]:
            if (y) >= i > (n - y):
                spiraali [x,i] = (z + y - i)
    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