oj.uz

Submission #875883

# Submission time Handle Problem Language Result Execution time Memory
875883 2023-11-20T16:40:10 Z rainboy Wish (LMIO19_noras) C++17
100 / 100
 104 ms 9388 KB 
#include <math.h>
#include <stdio.h>

#define N	200000

long long max(long long a, long long b) { return a > b ? a : b; }

typedef long double ld;
typedef __int128_t L;

unsigned int X = 12345;

int rand_() {
	return (X *= 3) >> 1;
}

long long tt[N * 2];

void sort(int *ii, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, i_ = ii[l + rand_() % (r - l)], tmp;

		while (j < k) {
			int c = tt[ii[j]] != tt[i_] ? (tt[ii[j]] < tt[i_] ? -1 : 1) : (ii[j] & 1) - (i_ & 1);

			if (c == 0)
				j++;
			else if (c < 0) {
				tmp = ii[i], ii[i] = ii[j], ii[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = ii[j], ii[j] = ii[k], ii[k] = tmp;
			}
		}
		sort(ii, l, i);
		l = k;
	}
}

int main() {
	static int ii[N * 2];
	int n, n_, i, d, ans;
	long long r;

	scanf("%d%lld", &n, &r);
	n_ = 0;
	while (n--) {
		long long x1, y1, x2, y2, a, b, c, t1, t2;
		ld d;

		scanf("%lld%lld%lld%lld", &x1, &y1, &x2, &y2), x2 -= x1, y2 -= y1;
		a = x2 * x2 + y2 * y2, b = (x1 * x2 + y1 * y2) * 2, c = x1 * x1 + y1 * y1 - r * r;
		d = (ld) b * b - (ld) 4 * a * c;
		if (d < 0)
			continue;
		d = sqrtl(d);
		t1 = (-b - d) / 2 / a, t2 = (-b + d) / 2 / a;
		while ((L) 2 * a * (t1 - 1) + b > 0 || ((L) a * (t1 - 1) + b) * (t1 - 1) + c <= 0)
			t1--;
		while ((L) 2 * a * t1 + b <= 0 && ((L) a * t1 + b) * t1 + c > 0)
			t1++;
		while ((L) 2 * a * (t2 + 1) + b <= 0 || ((L) a * (t2 + 1) + b) * (t2 + 1) + c <= 0)
			t2++;
		while ((L) 2 * a * t2 + b > 0 && ((L) a * t2 + b) * t2 + c > 0)
			t2--;
		t1 = max(t1, 0);
		if (t1 <= t2)
			tt[n_ << 1 | 0] = t1, tt[n_ << 1 | 1] = t2, n_++;
	}
	n = n_;
	for (i = 0; i < n * 2; i++)
		ii[i] = i;
	sort(ii, 0, n * 2);
	d = 0, ans = 0;
	for (i = 0; i < n * 2; i++)
		ans = max(ans, d += ((ii[i] & 1) == 0 ? 1 : -1));
	printf("%d\n", ans);
	return 0;
}

Compilation message

noras.cpp: In function 'int main()':
noras.cpp:46:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |  scanf("%d%lld", &n, &r);
      |  ~~~~~^~~~~~~~~~~~~~~~~~
noras.cpp:52:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |   scanf("%lld%lld%lld%lld", &x1, &y1, &x2, &y2), x2 -= x1, y2 -= y1;
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2484 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2488 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2392 KB Output is correct
9 Correct 0 ms 2472 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct

Subtask #2
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2484 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2488 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2392 KB Output is correct
9 Correct 0 ms 2472 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 32 ms 5744 KB Output is correct
24 Correct 30 ms 5616 KB Output is correct
25 Correct 29 ms 5712 KB Output is correct
26 Correct 30 ms 5712 KB Output is correct
27 Correct 29 ms 5312 KB Output is correct
28 Correct 29 ms 5716 KB Output is correct
29 Correct 30 ms 5876 KB Output is correct
30 Correct 29 ms 5724 KB Output is correct
31 Correct 30 ms 5868 KB Output is correct
32 Correct 50 ms 6236 KB Output is correct
33 Correct 42 ms 5900 KB Output is correct
34 Correct 41 ms 5868 KB Output is correct
35 Correct 41 ms 5972 KB Output is correct
36 Correct 41 ms 5980 KB Output is correct
37 Correct 29 ms 5292 KB Output is correct
38 Correct 30 ms 5280 KB Output is correct
39 Correct 32 ms 5352 KB Output is correct
40 Correct 29 ms 5200 KB Output is correct
41 Correct 29 ms 4996 KB Output is correct
42 Correct 30 ms 5172 KB Output is correct
43 Correct 90 ms 9300 KB Output is correct
44 Correct 96 ms 9308 KB Output is correct
45 Correct 98 ms 9388 KB Output is correct
46 Correct 95 ms 9356 KB Output is correct
47 Correct 94 ms 9348 KB Output is correct
48 Correct 82 ms 8528 KB Output is correct
49 Correct 87 ms 8508 KB Output is correct
50 Correct 89 ms 8528 KB Output is correct
51 Correct 85 ms 8276 KB Output is correct
52 Correct 83 ms 8272 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2484 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2488 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2392 KB Output is correct
9 Correct 0 ms 2472 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2504 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2392 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2484 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2488 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2392 KB Output is correct
9 Correct 0 ms 2472 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 32 ms 5744 KB Output is correct
24 Correct 30 ms 5616 KB Output is correct
25 Correct 29 ms 5712 KB Output is correct
26 Correct 30 ms 5712 KB Output is correct
27 Correct 29 ms 5312 KB Output is correct
28 Correct 29 ms 5716 KB Output is correct
29 Correct 30 ms 5876 KB Output is correct
30 Correct 29 ms 5724 KB Output is correct
31 Correct 30 ms 5868 KB Output is correct
32 Correct 50 ms 6236 KB Output is correct
33 Correct 42 ms 5900 KB Output is correct
34 Correct 41 ms 5868 KB Output is correct
35 Correct 41 ms 5972 KB Output is correct
36 Correct 41 ms 5980 KB Output is correct
37 Correct 29 ms 5292 KB Output is correct
38 Correct 30 ms 5280 KB Output is correct
39 Correct 32 ms 5352 KB Output is correct
40 Correct 29 ms 5200 KB Output is correct
41 Correct 29 ms 4996 KB Output is correct
42 Correct 30 ms 5172 KB Output is correct
43 Correct 90 ms 9300 KB Output is correct
44 Correct 96 ms 9308 KB Output is correct
45 Correct 98 ms 9388 KB Output is correct
46 Correct 95 ms 9356 KB Output is correct
47 Correct 94 ms 9348 KB Output is correct
48 Correct 82 ms 8528 KB Output is correct
49 Correct 87 ms 8508 KB Output is correct
50 Correct 89 ms 8528 KB Output is correct
51 Correct 85 ms 8276 KB Output is correct
52 Correct 83 ms 8272 KB Output is correct
53 Correct 0 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 1 ms 2504 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2392 KB Output is correct
59 Correct 29 ms 5756 KB Output is correct
60 Correct 32 ms 5464 KB Output is correct
61 Correct 32 ms 5460 KB Output is correct
62 Correct 31 ms 5632 KB Output is correct
63 Correct 37 ms 5460 KB Output is correct
64 Correct 46 ms 5212 KB Output is correct
65 Correct 37 ms 5456 KB Output is correct
66 Correct 37 ms 5460 KB Output is correct
67 Correct 37 ms 5468 KB Output is correct
68 Correct 45 ms 6112 KB Output is correct
69 Correct 56 ms 5972 KB Output is correct
70 Correct 48 ms 6320 KB Output is correct
71 Correct 53 ms 5972 KB Output is correct
72 Correct 46 ms 5912 KB Output is correct
73 Correct 30 ms 5200 KB Output is correct
74 Correct 32 ms 5296 KB Output is correct
75 Correct 40 ms 5712 KB Output is correct
76 Correct 30 ms 5212 KB Output is correct
77 Correct 86 ms 9152 KB Output is correct
78 Correct 85 ms 9044 KB Output is correct
79 Correct 85 ms 9044 KB Output is correct
80 Correct 88 ms 9040 KB Output is correct
81 Correct 104 ms 9040 KB Output is correct
82 Correct 87 ms 9044 KB Output is correct
83 Correct 90 ms 8704 KB Output is correct
84 Correct 86 ms 8540 KB Output is correct
85 Correct 93 ms 8688 KB Output is correct
86 Correct 94 ms 8704 KB Output is correct

Subtask #5
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2484 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2488 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2392 KB Output is correct
9 Correct 0 ms 2472 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 32 ms 5744 KB Output is correct
24 Correct 30 ms 5616 KB Output is correct
25 Correct 29 ms 5712 KB Output is correct
26 Correct 30 ms 5712 KB Output is correct
27 Correct 29 ms 5312 KB Output is correct
28 Correct 29 ms 5716 KB Output is correct
29 Correct 30 ms 5876 KB Output is correct
30 Correct 29 ms 5724 KB Output is correct
31 Correct 30 ms 5868 KB Output is correct
32 Correct 50 ms 6236 KB Output is correct
33 Correct 42 ms 5900 KB Output is correct
34 Correct 41 ms 5868 KB Output is correct
35 Correct 41 ms 5972 KB Output is correct
36 Correct 41 ms 5980 KB Output is correct
37 Correct 29 ms 5292 KB Output is correct
38 Correct 30 ms 5280 KB Output is correct
39 Correct 32 ms 5352 KB Output is correct
40 Correct 29 ms 5200 KB Output is correct
41 Correct 29 ms 4996 KB Output is correct
42 Correct 30 ms 5172 KB Output is correct
43 Correct 90 ms 9300 KB Output is correct
44 Correct 96 ms 9308 KB Output is correct
45 Correct 98 ms 9388 KB Output is correct
46 Correct 95 ms 9356 KB Output is correct
47 Correct 94 ms 9348 KB Output is correct
48 Correct 82 ms 8528 KB Output is correct
49 Correct 87 ms 8508 KB Output is correct
50 Correct 89 ms 8528 KB Output is correct
51 Correct 85 ms 8276 KB Output is correct
52 Correct 83 ms 8272 KB Output is correct
53 Correct 29 ms 5756 KB Output is correct
54 Correct 32 ms 5464 KB Output is correct
55 Correct 32 ms 5460 KB Output is correct
56 Correct 31 ms 5632 KB Output is correct
57 Correct 37 ms 5460 KB Output is correct
58 Correct 46 ms 5212 KB Output is correct
59 Correct 37 ms 5456 KB Output is correct
60 Correct 37 ms 5460 KB Output is correct
61 Correct 37 ms 5468 KB Output is correct
62 Correct 45 ms 6112 KB Output is correct
63 Correct 56 ms 5972 KB Output is correct
64 Correct 48 ms 6320 KB Output is correct
65 Correct 53 ms 5972 KB Output is correct
66 Correct 46 ms 5912 KB Output is correct
67 Correct 30 ms 5200 KB Output is correct
68 Correct 32 ms 5296 KB Output is correct
69 Correct 40 ms 5712 KB Output is correct
70 Correct 30 ms 5212 KB Output is correct
71 Correct 86 ms 9152 KB Output is correct
72 Correct 85 ms 9044 KB Output is correct
73 Correct 85 ms 9044 KB Output is correct
74 Correct 88 ms 9040 KB Output is correct
75 Correct 104 ms 9040 KB Output is correct
76 Correct 87 ms 9044 KB Output is correct
77 Correct 90 ms 8704 KB Output is correct
78 Correct 86 ms 8540 KB Output is correct
79 Correct 93 ms 8688 KB Output is correct
80 Correct 94 ms 8704 KB Output is correct
81 Correct 0 ms 2396 KB Output is correct
82 Correct 1 ms 2396 KB Output is correct
83 Correct 1 ms 2504 KB Output is correct
84 Correct 1 ms 2396 KB Output is correct
85 Correct 1 ms 2396 KB Output is correct
86 Correct 1 ms 2392 KB Output is correct
87 Correct 54 ms 6996 KB Output is correct
88 Correct 47 ms 7000 KB Output is correct
89 Correct 50 ms 7040 KB Output is correct
90 Correct 55 ms 7008 KB Output is correct
91 Correct 49 ms 6996 KB Output is correct
92 Correct 53 ms 6928 KB Output is correct
93 Correct 48 ms 7000 KB Output is correct
94 Correct 58 ms 7324 KB Output is correct
95 Correct 58 ms 7196 KB Output is correct
96 Correct 46 ms 6940 KB Output is correct
97 Correct 33 ms 6624 KB Output is correct
98 Correct 34 ms 6484 KB Output is correct
99 Correct 47 ms 6484 KB Output is correct
100 Correct 33 ms 6544 KB Output is correct
101 Correct 35 ms 6744 KB Output is correct
102 Correct 33 ms 6516 KB Output is correct
103 Correct 34 ms 6460 KB Output is correct
104 Correct 36 ms 6412 KB Output is correct
105 Correct 38 ms 6540 KB Output is correct
106 Correct 34 ms 6480 KB Output is correct