#include <stdio.h>
#define N 50000
int di[] = { -1, -1, 0, 1, 1, 1, 0, -1 };
int dj[] = { 0, 1, 1, 1, 0, -1, -1, -1 };
long long bb[N + 1]; int pp[N + 1];
void init() {
int i, j, k;
for (i = 1; i <= N; i++)
bb[i] = 0, pp[i] = i;
k = 0;
for (i = 2; i * i <= N; i++) {
if (pp[i] != i)
continue;
for (j = i; j <= N; j += i) {
bb[j] |= 1LL << k;
while (pp[j] % i == 0)
pp[j] /= i;
}
k++;
}
}
int visible(int i, int j) {
if (i == 0)
return j == 1;
if (j == 0)
return i == 1;
return (bb[i] & bb[j]) == 0 && (pp[i] == 1 || pp[i] != pp[j]);
}
int cnt;
void count(int i, int j, int l, int d) {
int k;
for (k = 1; k <= l; k++)
if (visible(i + di[d] * k, j + dj[d] * k))
cnt++;
if (l == 1)
return;
for (k = 1; k <= l / 2; k++) {
if (visible(i + di[d] * l + di[(d + 7) % 8] * k, j + dj[d] * l + dj[(d + 7) % 8] * k))
cnt++;
if (visible(i + di[d] * l + di[(d + 1) % 8] * k, j + dj[d] * l + dj[(d + 1) % 8] * k))
cnt++;
}
count(i + di[d] * l + di[(d + 7) % 8] * l / 2, j + dj[d] * l + dj[(d + 7) % 8] * l / 2, l / 2, d);
count(i + di[d] * l + di[(d + 7) % 8] * l / 2, j + dj[d] * l + dj[(d + 7) % 8] * l / 2, l / 2, (d + 6) % 8);
count(i + di[d] * l + di[(d + 1) % 8] * l / 2, j + dj[d] * l + dj[(d + 1) % 8] * l / 2, l / 2, d);
count(i + di[d] * l + di[(d + 1) % 8] * l / 2, j + dj[d] * l + dj[(d + 1) % 8] * l / 2, l / 2, (d + 2) % 8);
}
int main() {
int q;
init();
scanf("%*d%*d%d", &q);
while (q--) {
int i, j, l;
scanf("%d%d%d", &i, &j, &l), i--, j--;
if (visible(i, j))
cnt++;
count(i, j, l, 0);
}
printf("%d\n", cnt);
return 0;
}
Compilation message
squirrel.c: In function 'main':
squirrel.c:62:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
62 | scanf("%*d%*d%d", &q);
| ^~~~~~~~~~~~~~~~~~~~~
squirrel.c:66:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
66 | scanf("%d%d%d", &i, &j, &l), i--, j--;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
852 KB |
Output is correct |
2 |
Correct |
25 ms |
996 KB |
Output is correct |
3 |
Correct |
427 ms |
856 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
682 ms |
852 KB |
Output is correct |
2 |
Correct |
720 ms |
856 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1231 ms |
856 KB |
Output is correct |
2 |
Correct |
1218 ms |
852 KB |
Output is correct |
3 |
Correct |
1245 ms |
852 KB |
Output is correct |
4 |
Correct |
1336 ms |
852 KB |
Output is correct |
5 |
Correct |
1344 ms |
852 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2411 ms |
864 KB |
Output is correct |
2 |
Correct |
2493 ms |
852 KB |
Output is correct |
3 |
Correct |
2667 ms |
852 KB |
Output is correct |
4 |
Correct |
2782 ms |
864 KB |
Output is correct |
5 |
Correct |
3009 ms |
856 KB |
Output is correct |
6 |
Correct |
3131 ms |
852 KB |
Output is correct |
7 |
Correct |
3331 ms |
860 KB |
Output is correct |
8 |
Correct |
3160 ms |
856 KB |
Output is correct |
9 |
Correct |
3213 ms |
856 KB |
Output is correct |
10 |
Correct |
3625 ms |
860 KB |
Output is correct |