CSES - DatatÃ¤hti 2022 alku - Results
 Task: Spiraali Sender: Salama Submission time: 2021-10-11 14:20:44 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;

unsigned long long getNum(unsigned long long n, unsigned long long x, unsigned long long y) {
if(x == 1) {
return y;
}
else {
unsigned long long tcx, tcy;
tcx = min(n-x, x);
tcy = min(n-y, y);
bool p = false;

if(x <= n-y) { //v
p = false;
}
else {
p = true;
}

if(p) {
if(tcx <= tcy) {
return ((tcx*2+1)*2*n- (tcx*2+1)*(tcx*2+1) + n - y - (tcx-1/2));
}
else {
return ((tcy*2+1)*(2*n-(tcy*2+1)) - n + (x + (tcy*2+1)/2));
}
}
else {
//((tcx + (n-x < x ? 1 : 0))%2==0 && tcy%2==0) ||
if(tcx - (((tcx + (n-x < x ? 1 : 0))%2==0 && tcy%2==0) || ((tcx + (n-x < x ? 1 : 0)) == tcy && (tcx + (n-x < x ? 1 : 0))%2==1) ? 1 : 0) < tcy) {
return ((tcx-1)*2*(2*n-(tcx-1)*2) - ((tcx-1)*2-1)/2 + y - 1);
}
else {
return (tcy*2*(2*n-tcy*2) - x + tcy*2/2 + 1);
}
}
}
}

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

unsigned long long n, t, x, y;
cin >> n >> t;
for(unsigned long long i = 0; i < t; i++) {
cin >> y >> x;
cout << getNum(n, x, y) << ((i % n == n-1) ? "\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 32 31 30 29 28
2 37 64 63 62 61 60 59 58 27
3 38 65 84 83 82 81 80 57 26
4 39 66 85 96 95 94 79 56 25
5 40 67 86 97 100 93 78 55 24
...

#### 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 59...

#### 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 96732118681...