#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
typedef long long ll;
const ll N = 2e5 + 500;
ll n, k, xx1[N], xx2[N], yy1[N], yy2[N], P[N];
ll pov = 0;
ll stranica(ll st, ll x1, ll x2){
return P[x2] - (x1 ? P[x1 - 1] : 0);
}
bool boja(ll st, ll x, ll y){
return ((x / st) + (y / st)) & 1;
}
ll calc(ll st, ll x1, ll y1, ll x2, ll y2){
ll dx = stranica(st, x1, x2);
ll dy = stranica(st, y1, y2);
if(x1 / st == x2 / st)
return (x2 - x1 + 1) * (boja(st, x1, 0) ? (y2 - y1 + 1 - dy) : dy);
if(y1 / st == y2 / st)
return (y2 - y1 + 1) * (boja(st, y1, 0) ? (x2 - x1 + 1 - dx) : dx);
ll ux1 = x1 + (st - x1 % st) % st;
ll uy1 = y1 + (st - y1 % st) % st;
ll ux2 = x2 - (x2 % st + 1) % st;
ll uy2 = y2 - (y2 % st + 1) % st;
ll rub = 0;
rub += (ll)(boja(st, 0, y1) ? (x2 - x1 + 1) - dx : dx) * (uy1 - y1);
rub += (ll)(boja(st, 0, y2) ? (x2 - x1 + 1) - dx : dx) * (y2 - uy2);
rub += (ll)(boja(st, x1, 0) ? (y2 - y1 + 1) - dy : dy) * (ux1 - x1);
rub += (ll)(boja(st, x2, 0) ? (y2 - y1 + 1) - dy : dy) * (x2 - ux2);
if(boja(st, x1, y1)) rub -= (ll)(ux1 - x1) * (uy1 - y1);
if(boja(st, x1, y2)) rub -= (ll)(ux1 - x1) * (y2 - uy2);
if(boja(st, x2, y1)) rub -= (ll)(x2 - ux2) * (uy1 - y1);
if(boja(st, x2, y2)) rub -= (ll)(x2 - ux2) * (y2 - uy2);
// prllf("rub = %lld\n", rub);
ll sred = 0;
ll Dx = (ux2 - ux1 + 1) / st;
ll Dy = (uy2 - uy1 + 1) / st;
//prllf("Dx = %d Dy = %d\n", Dx, Dy);
sred += (ll)st * st * ((ll)Dx * Dy / 2LL + (boja(st, ux1, uy1) && ((Dx & 1) && (Dy & 1))));
return rub + sred;
}
int main(){
scanf("%lld%lld", &n, &k);
for(ll i = 0;i < k;i++){
scanf("%lld%lld%lld%lld", xx1 + i, yy1 + i, xx2 + i, yy2 + i);
xx1[i]--, xx2[i]--, yy1[i]--, yy2[i]--;
pov += (ll)(xx2[i] - xx1[i] + 1) * (yy2[i] - yy1[i] + 1);
}
ll sol = (ll)n * n;
for(ll i = 1;i < n;i++){
if(n % i) continue;
for(ll j = 0;j < n;j++)
P[j] = (j ? P[j - 1] : 0) + ((j / i) & 1);
ll cur = 0;
for(ll j = 0;j < k;j++)
cur += calc(i, xx1[j], yy1[j], xx2[j], yy2[j]);
//printf(" cur = %lld\n", cur);
ll crnih = (ll)i * i * (((ll)(n / i) * (n / i)) / 2LL);
//printf("crnih = %lld\n", crnih);
cur = crnih - cur + pov - cur;
//printf("cur = %lld\n", cur);
sol = min(sol, cur);
sol = min(sol, (ll)n * n - cur);
}
printf("%lld\n", sol);
return 0;
}
Compilation message
chessboard.cpp: In function 'int main()':
chessboard.cpp:52:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
52 | scanf("%lld%lld", &n, &k);
| ~~~~~^~~~~~~~~~~~~~~~~~~~
chessboard.cpp:54:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
54 | scanf("%lld%lld%lld%lld", xx1 + i, yy1 + i, xx2 + i, yy2 + i);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
2 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
2 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
36 ms |
4204 KB |
Output is correct |
2 |
Correct |
8 ms |
1260 KB |
Output is correct |
3 |
Correct |
26 ms |
3180 KB |
Output is correct |
4 |
Correct |
27 ms |
2668 KB |
Output is correct |
5 |
Correct |
38 ms |
3948 KB |
Output is correct |
6 |
Correct |
16 ms |
2668 KB |
Output is correct |
7 |
Correct |
5 ms |
876 KB |
Output is correct |
8 |
Correct |
18 ms |
2668 KB |
Output is correct |
9 |
Correct |
56 ms |
5484 KB |
Output is correct |
10 |
Correct |
23 ms |
3308 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
3 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
4 ms |
364 KB |
Output is correct |
7 |
Correct |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
4 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
492 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
2 ms |
364 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
3 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
4 ms |
364 KB |
Output is correct |
7 |
Correct |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
4 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
492 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
2 ms |
364 KB |
Output is correct |
16 |
Correct |
11 ms |
1644 KB |
Output is correct |
17 |
Correct |
30 ms |
4332 KB |
Output is correct |
18 |
Correct |
39 ms |
4972 KB |
Output is correct |
19 |
Correct |
65 ms |
4588 KB |
Output is correct |
20 |
Correct |
95 ms |
5100 KB |
Output is correct |
21 |
Correct |
29 ms |
4204 KB |
Output is correct |
22 |
Correct |
2 ms |
364 KB |
Output is correct |
23 |
Correct |
20 ms |
2412 KB |
Output is correct |
24 |
Correct |
76 ms |
4588 KB |
Output is correct |
25 |
Correct |
9 ms |
748 KB |
Output is correct |
26 |
Correct |
22 ms |
3052 KB |
Output is correct |
27 |
Correct |
57 ms |
3564 KB |
Output is correct |
28 |
Correct |
37 ms |
4844 KB |
Output is correct |
29 |
Correct |
13 ms |
1900 KB |
Output is correct |
30 |
Correct |
3 ms |
492 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
36 ms |
4204 KB |
Output is correct |
2 |
Correct |
8 ms |
1260 KB |
Output is correct |
3 |
Correct |
26 ms |
3180 KB |
Output is correct |
4 |
Correct |
27 ms |
2668 KB |
Output is correct |
5 |
Correct |
38 ms |
3948 KB |
Output is correct |
6 |
Correct |
16 ms |
2668 KB |
Output is correct |
7 |
Correct |
5 ms |
876 KB |
Output is correct |
8 |
Correct |
18 ms |
2668 KB |
Output is correct |
9 |
Correct |
56 ms |
5484 KB |
Output is correct |
10 |
Correct |
23 ms |
3308 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
3 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
4 ms |
364 KB |
Output is correct |
17 |
Correct |
2 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
4 ms |
364 KB |
Output is correct |
20 |
Correct |
1 ms |
364 KB |
Output is correct |
21 |
Correct |
1 ms |
492 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
25 |
Correct |
2 ms |
364 KB |
Output is correct |
26 |
Correct |
11 ms |
1644 KB |
Output is correct |
27 |
Correct |
30 ms |
4332 KB |
Output is correct |
28 |
Correct |
39 ms |
4972 KB |
Output is correct |
29 |
Correct |
65 ms |
4588 KB |
Output is correct |
30 |
Correct |
95 ms |
5100 KB |
Output is correct |
31 |
Correct |
29 ms |
4204 KB |
Output is correct |
32 |
Correct |
2 ms |
364 KB |
Output is correct |
33 |
Correct |
20 ms |
2412 KB |
Output is correct |
34 |
Correct |
76 ms |
4588 KB |
Output is correct |
35 |
Correct |
9 ms |
748 KB |
Output is correct |
36 |
Correct |
22 ms |
3052 KB |
Output is correct |
37 |
Correct |
57 ms |
3564 KB |
Output is correct |
38 |
Correct |
37 ms |
4844 KB |
Output is correct |
39 |
Correct |
13 ms |
1900 KB |
Output is correct |
40 |
Correct |
3 ms |
492 KB |
Output is correct |
41 |
Correct |
83 ms |
5740 KB |
Output is correct |
42 |
Correct |
48 ms |
6252 KB |
Output is correct |
43 |
Correct |
58 ms |
5740 KB |
Output is correct |
44 |
Correct |
44 ms |
6188 KB |
Output is correct |
45 |
Correct |
57 ms |
6508 KB |
Output is correct |
46 |
Correct |
150 ms |
6284 KB |
Output is correct |
47 |
Correct |
39 ms |
5868 KB |
Output is correct |
48 |
Correct |
62 ms |
5868 KB |
Output is correct |
49 |
Correct |
49 ms |
5868 KB |
Output is correct |
50 |
Correct |
295 ms |
6036 KB |
Output is correct |
51 |
Correct |
341 ms |
6380 KB |
Output is correct |
52 |
Correct |
305 ms |
6000 KB |
Output is correct |
53 |
Correct |
315 ms |
6380 KB |
Output is correct |
54 |
Correct |
293 ms |
5924 KB |
Output is correct |
55 |
Correct |
329 ms |
6536 KB |
Output is correct |
56 |
Correct |
273 ms |
5740 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
2 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
2 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
2 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
36 ms |
4204 KB |
Output is correct |
10 |
Correct |
8 ms |
1260 KB |
Output is correct |
11 |
Correct |
26 ms |
3180 KB |
Output is correct |
12 |
Correct |
27 ms |
2668 KB |
Output is correct |
13 |
Correct |
38 ms |
3948 KB |
Output is correct |
14 |
Correct |
16 ms |
2668 KB |
Output is correct |
15 |
Correct |
5 ms |
876 KB |
Output is correct |
16 |
Correct |
18 ms |
2668 KB |
Output is correct |
17 |
Correct |
56 ms |
5484 KB |
Output is correct |
18 |
Correct |
23 ms |
3308 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
1 ms |
364 KB |
Output is correct |
21 |
Correct |
1 ms |
364 KB |
Output is correct |
22 |
Correct |
3 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
4 ms |
364 KB |
Output is correct |
25 |
Correct |
2 ms |
364 KB |
Output is correct |
26 |
Correct |
1 ms |
364 KB |
Output is correct |
27 |
Correct |
4 ms |
364 KB |
Output is correct |
28 |
Correct |
1 ms |
364 KB |
Output is correct |
29 |
Correct |
1 ms |
492 KB |
Output is correct |
30 |
Correct |
1 ms |
364 KB |
Output is correct |
31 |
Correct |
1 ms |
364 KB |
Output is correct |
32 |
Correct |
1 ms |
364 KB |
Output is correct |
33 |
Correct |
2 ms |
364 KB |
Output is correct |
34 |
Correct |
11 ms |
1644 KB |
Output is correct |
35 |
Correct |
30 ms |
4332 KB |
Output is correct |
36 |
Correct |
39 ms |
4972 KB |
Output is correct |
37 |
Correct |
65 ms |
4588 KB |
Output is correct |
38 |
Correct |
95 ms |
5100 KB |
Output is correct |
39 |
Correct |
29 ms |
4204 KB |
Output is correct |
40 |
Correct |
2 ms |
364 KB |
Output is correct |
41 |
Correct |
20 ms |
2412 KB |
Output is correct |
42 |
Correct |
76 ms |
4588 KB |
Output is correct |
43 |
Correct |
9 ms |
748 KB |
Output is correct |
44 |
Correct |
22 ms |
3052 KB |
Output is correct |
45 |
Correct |
57 ms |
3564 KB |
Output is correct |
46 |
Correct |
37 ms |
4844 KB |
Output is correct |
47 |
Correct |
13 ms |
1900 KB |
Output is correct |
48 |
Correct |
3 ms |
492 KB |
Output is correct |
49 |
Correct |
83 ms |
5740 KB |
Output is correct |
50 |
Correct |
48 ms |
6252 KB |
Output is correct |
51 |
Correct |
58 ms |
5740 KB |
Output is correct |
52 |
Correct |
44 ms |
6188 KB |
Output is correct |
53 |
Correct |
57 ms |
6508 KB |
Output is correct |
54 |
Correct |
150 ms |
6284 KB |
Output is correct |
55 |
Correct |
39 ms |
5868 KB |
Output is correct |
56 |
Correct |
62 ms |
5868 KB |
Output is correct |
57 |
Correct |
49 ms |
5868 KB |
Output is correct |
58 |
Correct |
295 ms |
6036 KB |
Output is correct |
59 |
Correct |
341 ms |
6380 KB |
Output is correct |
60 |
Correct |
305 ms |
6000 KB |
Output is correct |
61 |
Correct |
315 ms |
6380 KB |
Output is correct |
62 |
Correct |
293 ms |
5924 KB |
Output is correct |
63 |
Correct |
329 ms |
6536 KB |
Output is correct |
64 |
Correct |
273 ms |
5740 KB |
Output is correct |
65 |
Correct |
1 ms |
364 KB |
Output is correct |
66 |
Correct |
1 ms |
364 KB |
Output is correct |
67 |
Correct |
367 ms |
6124 KB |
Output is correct |
68 |
Correct |
372 ms |
6252 KB |
Output is correct |
69 |
Correct |
304 ms |
5612 KB |
Output is correct |
70 |
Correct |
317 ms |
6004 KB |
Output is correct |
71 |
Correct |
339 ms |
5932 KB |
Output is correct |
72 |
Correct |
356 ms |
5740 KB |
Output is correct |
73 |
Correct |
337 ms |
5720 KB |
Output is correct |
74 |
Correct |
433 ms |
6184 KB |
Output is correct |
75 |
Correct |
338 ms |
5892 KB |
Output is correct |
76 |
Correct |
348 ms |
6252 KB |
Output is correct |
77 |
Correct |
86 ms |
6508 KB |
Output is correct |
78 |
Correct |
51 ms |
6144 KB |
Output is correct |
79 |
Correct |
66 ms |
5740 KB |
Output is correct |
80 |
Correct |
84 ms |
5996 KB |
Output is correct |
81 |
Correct |
72 ms |
5612 KB |
Output is correct |
82 |
Correct |
62 ms |
6252 KB |
Output is correct |
83 |
Correct |
53 ms |
5868 KB |
Output is correct |
84 |
Correct |
244 ms |
6508 KB |
Output is correct |
85 |
Correct |
386 ms |
6380 KB |
Output is correct |
86 |
Correct |
70 ms |
1004 KB |
Output is correct |
87 |
Correct |
72 ms |
1044 KB |
Output is correct |
88 |
Correct |
389 ms |
6548 KB |
Output is correct |
89 |
Correct |
134 ms |
2156 KB |
Output is correct |
90 |
Correct |
74 ms |
1132 KB |
Output is correct |