CSES - Datatähti 2022 alku - Results
Submission details
Task:Spiraali (Spiral)
Sender:lain
Submission time:2021-10-11 22:55:29
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 <bits/stdc++.h>
using namespace std;
typedef long long ll;

ll N;
ll T;
ll y_, x_;

int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);

  cin >> N >> T;
  while (T--) {
    cin >> y_ >> x_;
    --y_, --x_;

    ll a = std::min({x_, y_, N - 1 - x_, N - 1 - y_});
    ll s = (N - (a * 2) - 1);
    ll res = (4 * (N - a) * a + 1);

    if ((y_ - a) < s && (x_ - a) == 0)
      res += (y_ - a);
    else if ((y_ - a) != 0 && (x_ - a) == s)
      res += (s * 2) + (s - (y_ - a));
    else if ((y_ - a) == s && (x_ - a) < s)
      res += s + (x_ - a);
    else
      res += (s * 3) + (s - (x_ - a));

    printf("%lld\n", res);
  }
}

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
...