CSES - DatatÃ¤hti 2022 alku - Results
 Task: Spiraali (Spiral) Sender: xyrj Submission time: 2021-10-14 14:20:55 Language: C++11 Status: READY Result: 100
Feedback
groupverdictscore
#1ACCEPTED15
#2ACCEPTED20
#3ACCEPTED65
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1details
#2ACCEPTED0.01 s2details
#3ACCEPTED0.01 s3details

### Code

```#include <iostream>

using namespace std;

typedef long long ull;

ull hae(ull n, ull y, ull x)
{
ull vasen = x;
ull ala = n - y + 1;
ull oikea = n - x + 1;
ull yla = y;

ull r = min(vasen, min(ala, min(oikea, yla)));

// cout << "r " << r << "\n";

// ull tulos = (ull)((r - 1) * ((-4 * (2 * 1 - n - 1) - 4 * (2 * (r - 1) - n - 1)) / 2));
ull tulos = (-4 * (r - 1) * ((r - 1) - n));

if (r == vasen)
{
tulos = (tulos + (y - r + 1));
return tulos;
}

tulos = (tulos + n - 2 * (r - 1));

if (r == ala)
{
tulos = tulos + (x - r);
return tulos;
}

tulos = (tulos + n - 2 * (r - 1));

if (r == oikea)
{
// cout << "Korkeus " << (n - 2 * (r - 1)) << "    (y - r) " << (y - r + 1) << "\n";
tulos = (tulos + (n - 2 * (r - 1)) - (y - r + 1) - 1);
return tulos;
}

tulos = (tulos + n - 2 * (r - 1));

if (r == yla)
{
tulos = (tulos + (n - 2 * (r - 1)) - (x - r + 1) - 2);
return tulos;
}

return tulos;
}

int main()
{
ull n, t;
cin >> n >> t;

for (int i = 0; i < t; i++)
{
ull y, x;
cin >> y >> x;
cout << hae(n, y, x) << "\n";
}
}```

### 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
...