CSES - Datatähti 2022 alku - Results
Submission details
Task:Spiraali
Sender:intoo
Submission time:2021-10-04 00:32:48
Language:C++17
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;
using ll = long long;

ll solve(ll n, ll y, ll x);

int main()
{
	ll n, t;
	cin >> n >> t;
	while (t --> 0) {
		ll y, x;
		cin >> y >> x;
		cout << solve(n, y-1, x-1) << "\n";
	}
}

ll solve(ll n, ll y, ll x)
{
	ll d = min(min(y, n-1-y), min(x, n-1-x));
	if (d > 0) {
		return n*n - (n-2*d)*(n-2*d) + solve(n-2*d, y-d, x-d);
	}
	if (x == 0) {
		return y+1;
	}
	if (y == n-1) {
		return n-1 + x+1;
	}
	if (x == n-1) {
		return 2*(n-1) + n-1-y+1;
	}
	if (y == 0) {
		return 3*(n-1) + n-1-x+1;
	}
	cout << "SOS\n";
	return -1e9;
}

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
...