CSES - DatatÃ¤hti 2022 alku - Results
 Task: Spiraali Sender: Kirill_Akimov Submission time: 2021-10-12 23:39:20 Language: PyPy3 Status: READY Result: 100
Feedback
groupverdictscore
#1ACCEPTED15
#2ACCEPTED20
#3ACCEPTED65
Test results
testverdicttimegroup
#1ACCEPTED0.04 s1details
#2ACCEPTED0.09 s2details
#3ACCEPTED0.09 s3details

### Code

```n, t = input().split()

n = int(n)
t = int(t)

d = 8

for _ in range(t):

a = 0
y, x = [int(e) for e in input().split()]
x = 2 * x - n - 1
y = n - 2 * y + 1

if y > x:
if y > -x:
a_1 = 5
m = (y-1)//2
a_m = a_1 + (m-1)*d
a = n ** 2 - m * ((a_1 + a_m)//2) - (x - 1)//2

elif x < -1:
a_1 = 11
m = (-x-1)//2
a_m = a_1 + (m-1)*d
a = (n ** 2 - 3) - m * ((a_1 + a_m)//2) - (y - 1)//2
else:
a = n ** 2 - 3

else:
if y <= -x:
if y < -1:
a_1 = 9
m = (-y-1)//2
a_m = a_1 + (m-1)*d
a = (n ** 2 - 1) - m * ((a_1 + a_m)//2) + (x - 1)//2

else:
a = n ** 2 + (x + y)//2 - 1
elif x > 1:
a_1 = 7
m = (x-1)//2
a_m = a_1 + (m-1)*d
a = n ** 2 - m * ((a_1 + a_m)//2) + (y - 1)//2
else:
a = n ** 2

print(a)

```

### Test details

#### Test 1

Group: 1

Verdict: ACCEPTED

input
10 100
1 1
1 2
1 3
1 4
...

correct output
1
36
35
34
33
...

user output
1
36
35
34
33
...

#### Test 2

Group: 2

Verdict: ACCEPTED

input
1000 1000
371 263
915 322
946 880
53 738
...

correct output
773533
312166
206053
200080
593922
...

user output
773533
312166
206053
200080
593922
...

#### Test 3

Group: 3

Verdict: ACCEPTED

input
1000000000 1000
177757853 827347032
409613589 419171337
739269360 256524697
328695530 896842209
...

correct output
571375684522141210
967321186816598569
762879105851175000
370065046779516790
936897883750373771
...

user output
571375684522141210
967321186816598569
762879105851175000
370065046779516790
936897883750373771
...