Submission #994723

# Submission time Handle Problem Language Result Execution time Memory
994723 2024-06-08T04:31:09 Z PenguinsAreCute Portal (BOI24_portal) C++17
50 / 100
80 ms 4304 KB
// yay linear algebra!
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int SQDET = 1414218;
bool pr[SQDET];
vector<int> primes;
int test(int x[], int y[], int n, int p) {
	// test against the guy with gcd with lowest vp.
	pair<int,int> l = {100,0};
	for(int i=1;i<n;i++) {
		int g = __gcd(x[i],y[i]), c = 0;
		while((!(g%p)) && c<100) g/=p, c++;
		l=min(l,{c,i});
	}
	int g = 0;
	for(int i=1;i<n;i++) g=__gcd(g,x[i]*y[l.second]-x[l.second]*y[i]);
	int c = 0; while(!(g%p)) g/=p,c++;
	return c;
}
main() {
	fill(pr,pr+SQDET,1);
	for(int i=2;i<SQDET;i++) if(pr[i]) {
		primes.push_back(i);
		for(int j=i*i;j<SQDET;j+=i) pr[j]=0;
	}
	int n; cin >> n;
	int x[n], y[n]; for(int i=0;i<n;i++) cin>>x[i]>>y[i];
	for(int i=1;i<n;i++) x[i]-=x[0],y[i]-=y[0];
	int g=0; for(int i=2;i<n;i++) g=__gcd(g,x[1]*y[i]-x[i]*y[1]);
	if(!g) {cout<<-1; return 0;}
	int ans = 1;
	for(auto i: primes) if(!(g%i)) {
		int k = test(x,y,n,i);
		while(k--) ans *= i;
		while(!(g%i)) g/=i;
	}
	if(g>1 && test(x,y,n,g)) ans *= g;
	cout << ans;
}

Compilation message

Main.cpp:21:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   21 | main() {
      | ^~~~
# Verdict Execution time Memory Grader output
1 Correct 5 ms 2772 KB Output is correct
2 Correct 5 ms 2772 KB Output is correct
3 Correct 5 ms 2772 KB Output is correct
4 Correct 5 ms 2772 KB Output is correct
5 Correct 6 ms 2772 KB Output is correct
6 Correct 6 ms 2912 KB Output is correct
7 Correct 5 ms 2772 KB Output is correct
8 Correct 5 ms 2960 KB Output is correct
9 Correct 6 ms 2772 KB Output is correct
10 Correct 5 ms 2768 KB Output is correct
11 Correct 5 ms 2772 KB Output is correct
12 Correct 5 ms 2772 KB Output is correct
13 Correct 6 ms 2784 KB Output is correct
14 Correct 5 ms 2908 KB Output is correct
15 Correct 6 ms 2772 KB Output is correct
16 Correct 5 ms 2772 KB Output is correct
17 Correct 5 ms 2772 KB Output is correct
18 Correct 5 ms 2956 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 5 ms 2772 KB Output is correct
2 Correct 5 ms 2772 KB Output is correct
3 Correct 5 ms 2772 KB Output is correct
4 Correct 5 ms 2772 KB Output is correct
5 Correct 6 ms 2772 KB Output is correct
6 Correct 6 ms 2912 KB Output is correct
7 Correct 5 ms 2772 KB Output is correct
8 Correct 5 ms 2960 KB Output is correct
9 Correct 6 ms 2772 KB Output is correct
10 Correct 5 ms 2768 KB Output is correct
11 Correct 5 ms 2772 KB Output is correct
12 Correct 5 ms 2772 KB Output is correct
13 Correct 6 ms 2784 KB Output is correct
14 Correct 5 ms 2908 KB Output is correct
15 Correct 6 ms 2772 KB Output is correct
16 Correct 5 ms 2772 KB Output is correct
17 Correct 5 ms 2772 KB Output is correct
18 Correct 5 ms 2956 KB Output is correct
19 Correct 5 ms 2772 KB Output is correct
20 Correct 6 ms 2772 KB Output is correct
21 Correct 5 ms 2964 KB Output is correct
22 Correct 6 ms 2772 KB Output is correct
23 Correct 5 ms 2772 KB Output is correct
24 Correct 6 ms 2772 KB Output is correct
25 Correct 5 ms 2772 KB Output is correct
26 Correct 5 ms 2772 KB Output is correct
27 Correct 6 ms 2772 KB Output is correct
28 Correct 6 ms 2772 KB Output is correct
29 Correct 6 ms 2772 KB Output is correct
30 Correct 6 ms 2772 KB Output is correct
31 Correct 5 ms 2916 KB Output is correct
32 Correct 6 ms 2772 KB Output is correct
33 Correct 5 ms 2772 KB Output is correct
34 Correct 5 ms 2772 KB Output is correct
35 Correct 8 ms 2784 KB Output is correct
36 Correct 6 ms 2760 KB Output is correct
37 Correct 6 ms 3024 KB Output is correct
38 Correct 6 ms 2772 KB Output is correct
39 Correct 6 ms 2772 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 2772 KB Output is correct
2 Correct 68 ms 4304 KB Output is correct
3 Correct 74 ms 4300 KB Output is correct
4 Correct 70 ms 4304 KB Output is correct
5 Correct 71 ms 4304 KB Output is correct
6 Correct 65 ms 4300 KB Output is correct
7 Correct 43 ms 4304 KB Output is correct
8 Correct 45 ms 4304 KB Output is correct
9 Correct 40 ms 4300 KB Output is correct
10 Correct 66 ms 4304 KB Output is correct
11 Correct 64 ms 4304 KB Output is correct
12 Correct 65 ms 4300 KB Output is correct
13 Correct 5 ms 2772 KB Output is correct
14 Correct 57 ms 4172 KB Output is correct
15 Correct 56 ms 4304 KB Output is correct
16 Correct 73 ms 4300 KB Output is correct
17 Correct 75 ms 4304 KB Output is correct
18 Correct 80 ms 4304 KB Output is correct
19 Correct 77 ms 4304 KB Output is correct
20 Correct 72 ms 4304 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 6 ms 2772 KB Output is correct
2 Correct 5 ms 2772 KB Output is correct
3 Correct 5 ms 2772 KB Output is correct
4 Correct 5 ms 2772 KB Output is correct
5 Correct 6 ms 2956 KB Output is correct
6 Correct 6 ms 2772 KB Output is correct
7 Correct 5 ms 2772 KB Output is correct
8 Correct 5 ms 2772 KB Output is correct
9 Correct 5 ms 2772 KB Output is correct
10 Correct 5 ms 2964 KB Output is correct
11 Correct 5 ms 2768 KB Output is correct
12 Correct 5 ms 2772 KB Output is correct
13 Correct 5 ms 2768 KB Output is correct
14 Correct 6 ms 2772 KB Output is correct
15 Correct 5 ms 2820 KB Output is correct
16 Correct 5 ms 2772 KB Output is correct
17 Correct 6 ms 2772 KB Output is correct
18 Correct 6 ms 2768 KB Output is correct
19 Correct 5 ms 2772 KB Output is correct
20 Correct 5 ms 2760 KB Output is correct
21 Correct 6 ms 2772 KB Output is correct
22 Correct 5 ms 2820 KB Output is correct
23 Correct 5 ms 2772 KB Output is correct
24 Correct 6 ms 2768 KB Output is correct
25 Correct 7 ms 2772 KB Output is correct
26 Correct 5 ms 2956 KB Output is correct
27 Correct 6 ms 2772 KB Output is correct
28 Correct 6 ms 2772 KB Output is correct
29 Correct 5 ms 2772 KB Output is correct
30 Correct 5 ms 2772 KB Output is correct
31 Correct 6 ms 2768 KB Output is correct
32 Correct 5 ms 2772 KB Output is correct
33 Correct 5 ms 2772 KB Output is correct
34 Correct 5 ms 2772 KB Output is correct
35 Correct 5 ms 2772 KB Output is correct
36 Correct 5 ms 2772 KB Output is correct
37 Correct 6 ms 2772 KB Output is correct
38 Correct 5 ms 2768 KB Output is correct
39 Correct 6 ms 2768 KB Output is correct
40 Correct 5 ms 2772 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 5 ms 2772 KB Output is correct
2 Correct 5 ms 2772 KB Output is correct
3 Correct 5 ms 2772 KB Output is correct
4 Correct 5 ms 2772 KB Output is correct
5 Correct 6 ms 2772 KB Output is correct
6 Correct 6 ms 2912 KB Output is correct
7 Correct 5 ms 2772 KB Output is correct
8 Correct 5 ms 2960 KB Output is correct
9 Correct 6 ms 2772 KB Output is correct
10 Correct 5 ms 2768 KB Output is correct
11 Correct 5 ms 2772 KB Output is correct
12 Correct 5 ms 2772 KB Output is correct
13 Correct 6 ms 2784 KB Output is correct
14 Correct 5 ms 2908 KB Output is correct
15 Correct 6 ms 2772 KB Output is correct
16 Correct 5 ms 2772 KB Output is correct
17 Correct 5 ms 2772 KB Output is correct
18 Correct 5 ms 2956 KB Output is correct
19 Correct 5 ms 2772 KB Output is correct
20 Correct 6 ms 2772 KB Output is correct
21 Correct 5 ms 2964 KB Output is correct
22 Correct 6 ms 2772 KB Output is correct
23 Correct 5 ms 2772 KB Output is correct
24 Correct 6 ms 2772 KB Output is correct
25 Correct 5 ms 2772 KB Output is correct
26 Correct 5 ms 2772 KB Output is correct
27 Correct 6 ms 2772 KB Output is correct
28 Correct 6 ms 2772 KB Output is correct
29 Correct 6 ms 2772 KB Output is correct
30 Correct 6 ms 2772 KB Output is correct
31 Correct 5 ms 2916 KB Output is correct
32 Correct 6 ms 2772 KB Output is correct
33 Correct 5 ms 2772 KB Output is correct
34 Correct 5 ms 2772 KB Output is correct
35 Correct 8 ms 2784 KB Output is correct
36 Correct 6 ms 2760 KB Output is correct
37 Correct 6 ms 3024 KB Output is correct
38 Correct 6 ms 2772 KB Output is correct
39 Correct 6 ms 2772 KB Output is correct
40 Correct 6 ms 2772 KB Output is correct
41 Correct 5 ms 2772 KB Output is correct
42 Correct 5 ms 2772 KB Output is correct
43 Correct 5 ms 2772 KB Output is correct
44 Correct 6 ms 2956 KB Output is correct
45 Correct 6 ms 2772 KB Output is correct
46 Correct 5 ms 2772 KB Output is correct
47 Correct 5 ms 2772 KB Output is correct
48 Correct 5 ms 2772 KB Output is correct
49 Correct 5 ms 2964 KB Output is correct
50 Correct 5 ms 2768 KB Output is correct
51 Correct 5 ms 2772 KB Output is correct
52 Correct 5 ms 2768 KB Output is correct
53 Correct 6 ms 2772 KB Output is correct
54 Correct 5 ms 2820 KB Output is correct
55 Correct 5 ms 2772 KB Output is correct
56 Correct 6 ms 2772 KB Output is correct
57 Correct 6 ms 2768 KB Output is correct
58 Correct 5 ms 2772 KB Output is correct
59 Correct 5 ms 2760 KB Output is correct
60 Correct 6 ms 2772 KB Output is correct
61 Correct 5 ms 2820 KB Output is correct
62 Correct 5 ms 2772 KB Output is correct
63 Correct 6 ms 2768 KB Output is correct
64 Correct 7 ms 2772 KB Output is correct
65 Correct 5 ms 2956 KB Output is correct
66 Correct 6 ms 2772 KB Output is correct
67 Correct 6 ms 2772 KB Output is correct
68 Correct 5 ms 2772 KB Output is correct
69 Correct 5 ms 2772 KB Output is correct
70 Correct 6 ms 2768 KB Output is correct
71 Correct 5 ms 2772 KB Output is correct
72 Correct 5 ms 2772 KB Output is correct
73 Correct 5 ms 2772 KB Output is correct
74 Correct 5 ms 2772 KB Output is correct
75 Correct 5 ms 2772 KB Output is correct
76 Correct 6 ms 2772 KB Output is correct
77 Correct 5 ms 2768 KB Output is correct
78 Correct 6 ms 2768 KB Output is correct
79 Correct 5 ms 2772 KB Output is correct
80 Correct 7 ms 2768 KB Output is correct
81 Correct 7 ms 3024 KB Output is correct
82 Correct 7 ms 2772 KB Output is correct
83 Correct 6 ms 2888 KB Output is correct
84 Correct 5 ms 2768 KB Output is correct
85 Correct 6 ms 2952 KB Output is correct
86 Correct 6 ms 2772 KB Output is correct
87 Correct 7 ms 2772 KB Output is correct
88 Correct 5 ms 2772 KB Output is correct
89 Correct 6 ms 2772 KB Output is correct
90 Correct 6 ms 2768 KB Output is correct
91 Correct 6 ms 2800 KB Output is correct
92 Correct 7 ms 2772 KB Output is correct
93 Correct 7 ms 2772 KB Output is correct
94 Correct 8 ms 2736 KB Output is correct
95 Correct 8 ms 2772 KB Output is correct
96 Correct 6 ms 2772 KB Output is correct
97 Correct 7 ms 2772 KB Output is correct
98 Correct 7 ms 2772 KB Output is correct
99 Correct 10 ms 2772 KB Output is correct
100 Correct 7 ms 2772 KB Output is correct
101 Correct 6 ms 2772 KB Output is correct
102 Correct 7 ms 2772 KB Output is correct
103 Correct 6 ms 2772 KB Output is correct
104 Correct 6 ms 2772 KB Output is correct
105 Correct 6 ms 2772 KB Output is correct
106 Correct 7 ms 2768 KB Output is correct
107 Correct 6 ms 2772 KB Output is correct
108 Correct 6 ms 2772 KB Output is correct
109 Correct 7 ms 2772 KB Output is correct
110 Correct 7 ms 2772 KB Output is correct
111 Incorrect 5 ms 2980 KB Output isn't correct
112 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 5 ms 2772 KB Output is correct
2 Correct 5 ms 2772 KB Output is correct
3 Correct 5 ms 2772 KB Output is correct
4 Correct 5 ms 2772 KB Output is correct
5 Correct 6 ms 2772 KB Output is correct
6 Correct 6 ms 2912 KB Output is correct
7 Correct 5 ms 2772 KB Output is correct
8 Correct 5 ms 2960 KB Output is correct
9 Correct 6 ms 2772 KB Output is correct
10 Correct 5 ms 2768 KB Output is correct
11 Correct 5 ms 2772 KB Output is correct
12 Correct 5 ms 2772 KB Output is correct
13 Correct 6 ms 2784 KB Output is correct
14 Correct 5 ms 2908 KB Output is correct
15 Correct 6 ms 2772 KB Output is correct
16 Correct 5 ms 2772 KB Output is correct
17 Correct 5 ms 2772 KB Output is correct
18 Correct 5 ms 2956 KB Output is correct
19 Correct 5 ms 2772 KB Output is correct
20 Correct 6 ms 2772 KB Output is correct
21 Correct 5 ms 2964 KB Output is correct
22 Correct 6 ms 2772 KB Output is correct
23 Correct 5 ms 2772 KB Output is correct
24 Correct 6 ms 2772 KB Output is correct
25 Correct 5 ms 2772 KB Output is correct
26 Correct 5 ms 2772 KB Output is correct
27 Correct 6 ms 2772 KB Output is correct
28 Correct 6 ms 2772 KB Output is correct
29 Correct 6 ms 2772 KB Output is correct
30 Correct 6 ms 2772 KB Output is correct
31 Correct 5 ms 2916 KB Output is correct
32 Correct 6 ms 2772 KB Output is correct
33 Correct 5 ms 2772 KB Output is correct
34 Correct 5 ms 2772 KB Output is correct
35 Correct 8 ms 2784 KB Output is correct
36 Correct 6 ms 2760 KB Output is correct
37 Correct 6 ms 3024 KB Output is correct
38 Correct 6 ms 2772 KB Output is correct
39 Correct 6 ms 2772 KB Output is correct
40 Correct 7 ms 2772 KB Output is correct
41 Correct 68 ms 4304 KB Output is correct
42 Correct 74 ms 4300 KB Output is correct
43 Correct 70 ms 4304 KB Output is correct
44 Correct 71 ms 4304 KB Output is correct
45 Correct 65 ms 4300 KB Output is correct
46 Correct 43 ms 4304 KB Output is correct
47 Correct 45 ms 4304 KB Output is correct
48 Correct 40 ms 4300 KB Output is correct
49 Correct 66 ms 4304 KB Output is correct
50 Correct 64 ms 4304 KB Output is correct
51 Correct 65 ms 4300 KB Output is correct
52 Correct 5 ms 2772 KB Output is correct
53 Correct 57 ms 4172 KB Output is correct
54 Correct 56 ms 4304 KB Output is correct
55 Correct 73 ms 4300 KB Output is correct
56 Correct 75 ms 4304 KB Output is correct
57 Correct 80 ms 4304 KB Output is correct
58 Correct 77 ms 4304 KB Output is correct
59 Correct 72 ms 4304 KB Output is correct
60 Correct 6 ms 2772 KB Output is correct
61 Correct 5 ms 2772 KB Output is correct
62 Correct 5 ms 2772 KB Output is correct
63 Correct 5 ms 2772 KB Output is correct
64 Correct 6 ms 2956 KB Output is correct
65 Correct 6 ms 2772 KB Output is correct
66 Correct 5 ms 2772 KB Output is correct
67 Correct 5 ms 2772 KB Output is correct
68 Correct 5 ms 2772 KB Output is correct
69 Correct 5 ms 2964 KB Output is correct
70 Correct 5 ms 2768 KB Output is correct
71 Correct 5 ms 2772 KB Output is correct
72 Correct 5 ms 2768 KB Output is correct
73 Correct 6 ms 2772 KB Output is correct
74 Correct 5 ms 2820 KB Output is correct
75 Correct 5 ms 2772 KB Output is correct
76 Correct 6 ms 2772 KB Output is correct
77 Correct 6 ms 2768 KB Output is correct
78 Correct 5 ms 2772 KB Output is correct
79 Correct 5 ms 2760 KB Output is correct
80 Correct 6 ms 2772 KB Output is correct
81 Correct 5 ms 2820 KB Output is correct
82 Correct 5 ms 2772 KB Output is correct
83 Correct 6 ms 2768 KB Output is correct
84 Correct 7 ms 2772 KB Output is correct
85 Correct 5 ms 2956 KB Output is correct
86 Correct 6 ms 2772 KB Output is correct
87 Correct 6 ms 2772 KB Output is correct
88 Correct 5 ms 2772 KB Output is correct
89 Correct 5 ms 2772 KB Output is correct
90 Correct 6 ms 2768 KB Output is correct
91 Correct 5 ms 2772 KB Output is correct
92 Correct 5 ms 2772 KB Output is correct
93 Correct 5 ms 2772 KB Output is correct
94 Correct 5 ms 2772 KB Output is correct
95 Correct 5 ms 2772 KB Output is correct
96 Correct 6 ms 2772 KB Output is correct
97 Correct 5 ms 2768 KB Output is correct
98 Correct 6 ms 2768 KB Output is correct
99 Correct 5 ms 2772 KB Output is correct
100 Correct 7 ms 2768 KB Output is correct
101 Correct 7 ms 3024 KB Output is correct
102 Correct 7 ms 2772 KB Output is correct
103 Correct 6 ms 2888 KB Output is correct
104 Correct 5 ms 2768 KB Output is correct
105 Correct 6 ms 2952 KB Output is correct
106 Correct 6 ms 2772 KB Output is correct
107 Correct 7 ms 2772 KB Output is correct
108 Correct 5 ms 2772 KB Output is correct
109 Correct 6 ms 2772 KB Output is correct
110 Correct 6 ms 2768 KB Output is correct
111 Correct 6 ms 2800 KB Output is correct
112 Correct 7 ms 2772 KB Output is correct
113 Correct 7 ms 2772 KB Output is correct
114 Correct 8 ms 2736 KB Output is correct
115 Correct 8 ms 2772 KB Output is correct
116 Correct 6 ms 2772 KB Output is correct
117 Correct 7 ms 2772 KB Output is correct
118 Correct 7 ms 2772 KB Output is correct
119 Correct 10 ms 2772 KB Output is correct
120 Correct 7 ms 2772 KB Output is correct
121 Correct 6 ms 2772 KB Output is correct
122 Correct 7 ms 2772 KB Output is correct
123 Correct 6 ms 2772 KB Output is correct
124 Correct 6 ms 2772 KB Output is correct
125 Correct 6 ms 2772 KB Output is correct
126 Correct 7 ms 2768 KB Output is correct
127 Correct 6 ms 2772 KB Output is correct
128 Correct 6 ms 2772 KB Output is correct
129 Correct 7 ms 2772 KB Output is correct
130 Correct 7 ms 2772 KB Output is correct
131 Incorrect 5 ms 2980 KB Output isn't correct
132 Halted 0 ms 0 KB -