Submission #1013616

# Submission time Handle Problem Language Result Execution time Memory
1013616 2024-07-03T17:29:23 Z rainboy Portal (BOI24_portal) C
65 / 100
20 ms 1884 KB
#include <stdio.h>

long long abs_(long long a) { return a > 0 ? a : -a; }

typedef __int128_t L;

long long gcd(long long a, long long b) {
	return b == 0 ? a : gcd(b, a % b);
}

long long cross(long long x1, long long y1, long long x2, long long y2) {
	return x1 * y2 - x2 * y1;
}

long long dot(long long x1, long long y1, long long x2, long long y2) {
	return x1 * x2 + y1 * y2;
}

int main() {
	int n, x, y, x_, y_, x1, y1, x2, y2, x3, y3;
	long long d1, d1_, d2, c2, d3, c3, tmp;

	scanf("%d%d%d", &n, &x_, &y_), n--;
	x1 = y1 = 0, x2 = y2 = 0;
	while (n--) {
		scanf("%d%d", &x, &y);
		x3 = x - x_, y3 = y - y_;
		if (x3 == 0 && y3 == 0)
			continue;
		if (x1 == 0 && y1 == 0) {
			x1 = x3, y1 = y3;
			continue;
		}
		d1 = dot(x1, y1, x1, y1);
		d2 = dot(x1, y1, x2, y2), c2 = cross(x1, y1, x2, y2);
		d3 = dot(x1, y1, x3, y3), c3 = cross(x1, y1, x3, y3);
		if (c3 < 0)
			c3 = -c3, d3 = -d3;
		d3 = (d3 % d1 + d1) % d1;
		while (1) {
			if (c2 < c3)
				tmp = d2, d2 = d3, d3 = tmp, tmp = c2, c2 = c3, c3 = tmp;
			if (c3 == 0) {
				x2 = cross(x1, y1, c2, d2) / d1, y2 = dot(x1, y1, c2, d2) / d1;
				break;
			}
			d2 = ((d2 - (L) d3 * (c2 / c3)) % d1 + d1) % d1, c2 %= c3;
		}
		d1_ = gcd(d1, d3);
		x1 /= d1 / d1_, y1 /= d1 / d1_;
	}
	printf("%lld\n", x2 == 0 && y2 == 0 ? -1 : abs_(cross(x1, y1, x2, y2)));
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:23:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  scanf("%d%d%d", &n, &x_, &y_), n--;
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:26:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   scanf("%d%d", &x, &y);
      |   ^~~~~~~~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 416 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 416 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 400 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 416 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 16 ms 1624 KB Output is correct
3 Correct 16 ms 1628 KB Output is correct
4 Correct 16 ms 1676 KB Output is correct
5 Correct 15 ms 1676 KB Output is correct
6 Correct 15 ms 1628 KB Output is correct
7 Correct 14 ms 1628 KB Output is correct
8 Correct 14 ms 1884 KB Output is correct
9 Correct 14 ms 1812 KB Output is correct
10 Correct 14 ms 1676 KB Output is correct
11 Correct 15 ms 1624 KB Output is correct
12 Correct 20 ms 1628 KB Output is correct
13 Correct 0 ms 600 KB Output is correct
14 Correct 15 ms 1804 KB Output is correct
15 Correct 16 ms 1628 KB Output is correct
16 Correct 16 ms 1628 KB Output is correct
17 Correct 16 ms 1628 KB Output is correct
18 Correct 16 ms 1624 KB Output is correct
19 Correct 15 ms 1800 KB Output is correct
20 Correct 16 ms 1808 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 352 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 420 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 416 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 420 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 420 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 416 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 400 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 416 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 352 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 604 KB Output is correct
48 Correct 0 ms 600 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 600 KB Output is correct
54 Correct 0 ms 344 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 420 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 416 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 0 ms 344 KB Output is correct
69 Correct 0 ms 348 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 0 ms 344 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 0 ms 420 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 0 ms 348 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 420 KB Output is correct
80 Correct 1 ms 348 KB Output is correct
81 Correct 0 ms 448 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 428 KB Output is correct
85 Correct 0 ms 348 KB Output is correct
86 Correct 0 ms 348 KB Output is correct
87 Correct 0 ms 348 KB Output is correct
88 Correct 0 ms 348 KB Output is correct
89 Correct 1 ms 604 KB Output is correct
90 Correct 0 ms 348 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 0 ms 348 KB Output is correct
93 Correct 0 ms 348 KB Output is correct
94 Correct 1 ms 348 KB Output is correct
95 Correct 0 ms 348 KB Output is correct
96 Correct 0 ms 432 KB Output is correct
97 Correct 1 ms 344 KB Output is correct
98 Correct 0 ms 348 KB Output is correct
99 Correct 1 ms 344 KB Output is correct
100 Correct 0 ms 348 KB Output is correct
101 Correct 0 ms 348 KB Output is correct
102 Correct 0 ms 348 KB Output is correct
103 Correct 0 ms 348 KB Output is correct
104 Correct 1 ms 604 KB Output is correct
105 Correct 1 ms 344 KB Output is correct
106 Correct 0 ms 348 KB Output is correct
107 Correct 0 ms 348 KB Output is correct
108 Correct 1 ms 348 KB Output is correct
109 Correct 1 ms 444 KB Output is correct
110 Correct 1 ms 348 KB Output is correct
111 Correct 0 ms 348 KB Output is correct
112 Correct 0 ms 348 KB Output is correct
113 Correct 0 ms 348 KB Output is correct
114 Correct 1 ms 348 KB Output is correct
115 Correct 0 ms 348 KB Output is correct
116 Correct 1 ms 348 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 416 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 400 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 416 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 16 ms 1624 KB Output is correct
42 Correct 16 ms 1628 KB Output is correct
43 Correct 16 ms 1676 KB Output is correct
44 Correct 15 ms 1676 KB Output is correct
45 Correct 15 ms 1628 KB Output is correct
46 Correct 14 ms 1628 KB Output is correct
47 Correct 14 ms 1884 KB Output is correct
48 Correct 14 ms 1812 KB Output is correct
49 Correct 14 ms 1676 KB Output is correct
50 Correct 15 ms 1624 KB Output is correct
51 Correct 20 ms 1628 KB Output is correct
52 Correct 0 ms 600 KB Output is correct
53 Correct 15 ms 1804 KB Output is correct
54 Correct 16 ms 1628 KB Output is correct
55 Correct 16 ms 1628 KB Output is correct
56 Correct 16 ms 1628 KB Output is correct
57 Correct 16 ms 1624 KB Output is correct
58 Correct 15 ms 1800 KB Output is correct
59 Correct 16 ms 1808 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 352 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 0 ms 604 KB Output is correct
68 Correct 0 ms 600 KB Output is correct
69 Correct 0 ms 348 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 348 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 0 ms 600 KB Output is correct
74 Correct 0 ms 344 KB Output is correct
75 Correct 0 ms 348 KB Output is correct
76 Correct 0 ms 420 KB Output is correct
77 Correct 0 ms 348 KB Output is correct
78 Correct 0 ms 348 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 0 ms 348 KB Output is correct
81 Correct 0 ms 348 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 0 ms 348 KB Output is correct
84 Correct 0 ms 348 KB Output is correct
85 Correct 0 ms 348 KB Output is correct
86 Correct 0 ms 416 KB Output is correct
87 Correct 0 ms 348 KB Output is correct
88 Correct 0 ms 344 KB Output is correct
89 Correct 0 ms 348 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 348 KB Output is correct
92 Correct 0 ms 348 KB Output is correct
93 Correct 0 ms 344 KB Output is correct
94 Correct 0 ms 348 KB Output is correct
95 Correct 0 ms 420 KB Output is correct
96 Correct 0 ms 348 KB Output is correct
97 Correct 0 ms 348 KB Output is correct
98 Correct 0 ms 348 KB Output is correct
99 Correct 0 ms 420 KB Output is correct
100 Correct 1 ms 348 KB Output is correct
101 Correct 0 ms 448 KB Output is correct
102 Correct 0 ms 348 KB Output is correct
103 Correct 0 ms 348 KB Output is correct
104 Correct 0 ms 428 KB Output is correct
105 Correct 0 ms 348 KB Output is correct
106 Correct 0 ms 348 KB Output is correct
107 Correct 0 ms 348 KB Output is correct
108 Correct 0 ms 348 KB Output is correct
109 Correct 1 ms 604 KB Output is correct
110 Correct 0 ms 348 KB Output is correct
111 Correct 0 ms 348 KB Output is correct
112 Correct 0 ms 348 KB Output is correct
113 Correct 0 ms 348 KB Output is correct
114 Correct 1 ms 348 KB Output is correct
115 Correct 0 ms 348 KB Output is correct
116 Correct 0 ms 432 KB Output is correct
117 Correct 1 ms 344 KB Output is correct
118 Correct 0 ms 348 KB Output is correct
119 Correct 1 ms 344 KB Output is correct
120 Correct 0 ms 348 KB Output is correct
121 Correct 0 ms 348 KB Output is correct
122 Correct 0 ms 348 KB Output is correct
123 Correct 0 ms 348 KB Output is correct
124 Correct 1 ms 604 KB Output is correct
125 Correct 1 ms 344 KB Output is correct
126 Correct 0 ms 348 KB Output is correct
127 Correct 0 ms 348 KB Output is correct
128 Correct 1 ms 348 KB Output is correct
129 Correct 1 ms 444 KB Output is correct
130 Correct 1 ms 348 KB Output is correct
131 Correct 0 ms 348 KB Output is correct
132 Correct 0 ms 348 KB Output is correct
133 Correct 0 ms 348 KB Output is correct
134 Correct 1 ms 348 KB Output is correct
135 Correct 0 ms 348 KB Output is correct
136 Correct 1 ms 348 KB Output is correct
137 Correct 16 ms 1628 KB Output is correct
138 Correct 16 ms 1628 KB Output is correct
139 Correct 15 ms 1808 KB Output is correct
140 Correct 17 ms 1812 KB Output is correct
141 Correct 15 ms 1624 KB Output is correct
142 Correct 1 ms 348 KB Output is correct
143 Correct 1 ms 360 KB Output is correct
144 Correct 1 ms 352 KB Output is correct
145 Correct 2 ms 348 KB Output is correct
146 Correct 2 ms 344 KB Output is correct
147 Correct 2 ms 360 KB Output is correct
148 Correct 0 ms 348 KB Output is correct
149 Correct 15 ms 1560 KB Output is correct
150 Correct 16 ms 1688 KB Output is correct
151 Correct 15 ms 1880 KB Output is correct
152 Correct 15 ms 1644 KB Output is correct
153 Correct 17 ms 1808 KB Output is correct
154 Correct 20 ms 1628 KB Output is correct
155 Correct 20 ms 1800 KB Output is correct
156 Correct 15 ms 1624 KB Output is correct
157 Correct 14 ms 1680 KB Output is correct
158 Correct 14 ms 1676 KB Output is correct
159 Correct 14 ms 1628 KB Output is correct
160 Correct 14 ms 1632 KB Output is correct
161 Correct 17 ms 1632 KB Output is correct
162 Correct 14 ms 1628 KB Output is correct
163 Correct 13 ms 1552 KB Output is correct
164 Correct 14 ms 1544 KB Output is correct
165 Correct 13 ms 1632 KB Output is correct
166 Correct 18 ms 1420 KB Output is correct
167 Correct 14 ms 1632 KB Output is correct
168 Correct 13 ms 1424 KB Output is correct
169 Correct 14 ms 1376 KB Output is correct
170 Correct 14 ms 1372 KB Output is correct
171 Correct 0 ms 348 KB Output is correct
172 Incorrect 0 ms 356 KB Output isn't correct
173 Halted 0 ms 0 KB -