Submission #1045448

# Submission time Handle Problem Language Result Execution time Memory
1045448 2024-08-06T01:11:45 Z Darren0724 Portal (BOI24_portal) C++17
65 / 100
1530 ms 4756 KB
#pragma GCC optimize("Ofast","O3","unroll-loops")
#pragma GCC target("avx","avx2")
#include<bits/stdc++.h>
using namespace std;
#define x first
#define y second
#define int long long
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define rz resize
#define pb emplace_back
#define LCBorz ios_base::sync_with_stdio(false);cin.tie(0);
#define endl '\n'
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

const int INF=9e18;
const int mod=1e9+7;
const int N=200005;
const int K=20;
const int C=2000005;

int gcd(int a,int b){
    return abs(__gcd(a,b));
}

 
int32_t main(){
    LCBorz;
    int n;cin>>n;
    if(n<=2){
        cout<<-1<<endl;
        return 0;
    }
    vector<pair<int,int>> v(n),v1(n);
    for(int i=0;i<n;i++){
        int a,b;cin>>a>>b;
        //int a=rnd()%100;
        //int b=rnd()%100;
        v[i]={a,b};
    }
    sort(all(v));
    for(int i=1;i<n;i++){
        v[i].x-=v[0].x;
        v[i].y-=v[0].y;
    }
    int ans=-1;
    auto solve=[&](int i,int j)->void {
        int r1=v[j].y/gcd(v[i].y,v[j].y);
        int t=v[i].y*r1;
        int t1=t/v[j].y;
        int x1=abs(v[i].x*r1-v[j].x*t1);
        if(x1!=0)ans=(ans==-1?x1:gcd(ans,x1));
        //cout<<i<<' '<<j<<' '<<x1<<endl;
    };
    vector<int> t;
    for(int i=1;i<n;i++){
        if(v[i].y==0){
            ans=(ans==-1?v[i].x:gcd(v[i].x,ans));
            continue;
        }
        t.push_back(i);
    }
    int sz=t.size();
    if(sz==0){
        cout<<-1<<endl;
        return 0;
    }
    int times=0;
    shuffle(all(t),rnd);
    for(int i=0;i<sz&&times<=(3e7);i++){
        for(int j=i+1;j<sz&&times<=(3e7);j++){
            times++;
            solve(t[i],t[j]);
        }
    }
    int g1=-1;
    for(int i=1;i<n;i++){
        if(v[i].y==0)continue;
        g1=(g1==-1?abs(v[i].y):gcd(g1,v[i].y));
    }
    //cout<<ans<<' '<<g1<<endl;
    cout<<(ans==-1?-1:ans*g1)<<endl;
    return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
15 Correct 1 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 1 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 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
15 Correct 1 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 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 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 412 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 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 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 1012 ms 4756 KB Output is correct
3 Correct 962 ms 4572 KB Output is correct
4 Correct 925 ms 4572 KB Output is correct
5 Correct 978 ms 4572 KB Output is correct
6 Correct 1035 ms 4568 KB Output is correct
7 Correct 15 ms 3420 KB Output is correct
8 Correct 16 ms 3604 KB Output is correct
9 Correct 16 ms 3612 KB Output is correct
10 Correct 1408 ms 4568 KB Output is correct
11 Correct 319 ms 4064 KB Output is correct
12 Correct 325 ms 4060 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1484 ms 4744 KB Output is correct
15 Correct 1512 ms 4572 KB Output is correct
16 Correct 946 ms 4572 KB Output is correct
17 Correct 1272 ms 4568 KB Output is correct
18 Correct 1020 ms 4572 KB Output is correct
19 Correct 981 ms 4564 KB Output is correct
20 Correct 1008 ms 4572 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 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 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 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 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 348 KB Output is correct
31 Correct 0 ms 348 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 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 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
# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
15 Correct 1 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 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 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 412 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 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 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 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 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 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 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 348 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 0 ms 348 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 348 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 0 ms 348 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 348 KB Output is correct
80 Correct 96 ms 348 KB Output is correct
81 Correct 118 ms 344 KB Output is correct
82 Correct 15 ms 348 KB Output is correct
83 Correct 15 ms 348 KB Output is correct
84 Correct 18 ms 348 KB Output is correct
85 Correct 16 ms 512 KB Output is correct
86 Correct 16 ms 348 KB Output is correct
87 Correct 25 ms 504 KB Output is correct
88 Correct 0 ms 348 KB Output is correct
89 Correct 99 ms 536 KB Output is correct
90 Correct 104 ms 532 KB Output is correct
91 Correct 99 ms 348 KB Output is correct
92 Correct 120 ms 348 KB Output is correct
93 Correct 119 ms 348 KB Output is correct
94 Correct 101 ms 344 KB Output is correct
95 Correct 99 ms 348 KB Output is correct
96 Correct 76 ms 528 KB Output is correct
97 Correct 70 ms 360 KB Output is correct
98 Correct 81 ms 524 KB Output is correct
99 Correct 72 ms 344 KB Output is correct
100 Correct 79 ms 528 KB Output is correct
101 Correct 62 ms 348 KB Output is correct
102 Correct 72 ms 344 KB Output is correct
103 Correct 73 ms 348 KB Output is correct
104 Correct 65 ms 520 KB Output is correct
105 Correct 71 ms 348 KB Output is correct
106 Correct 62 ms 344 KB Output is correct
107 Correct 67 ms 348 KB Output is correct
108 Correct 64 ms 348 KB Output is correct
109 Correct 79 ms 348 KB Output is correct
110 Correct 67 ms 344 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 91 ms 532 KB Output is correct
115 Correct 98 ms 348 KB Output is correct
116 Correct 94 ms 348 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 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 348 KB Output is correct
15 Correct 1 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 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 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 412 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 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 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 1012 ms 4756 KB Output is correct
42 Correct 962 ms 4572 KB Output is correct
43 Correct 925 ms 4572 KB Output is correct
44 Correct 978 ms 4572 KB Output is correct
45 Correct 1035 ms 4568 KB Output is correct
46 Correct 15 ms 3420 KB Output is correct
47 Correct 16 ms 3604 KB Output is correct
48 Correct 16 ms 3612 KB Output is correct
49 Correct 1408 ms 4568 KB Output is correct
50 Correct 319 ms 4064 KB Output is correct
51 Correct 325 ms 4060 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1484 ms 4744 KB Output is correct
54 Correct 1512 ms 4572 KB Output is correct
55 Correct 946 ms 4572 KB Output is correct
56 Correct 1272 ms 4568 KB Output is correct
57 Correct 1020 ms 4572 KB Output is correct
58 Correct 981 ms 4564 KB Output is correct
59 Correct 1008 ms 4572 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 348 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 0 ms 348 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 348 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 0 ms 348 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 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 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 0 ms 348 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 0 ms 348 KB Output is correct
95 Correct 0 ms 348 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 348 KB Output is correct
100 Correct 96 ms 348 KB Output is correct
101 Correct 118 ms 344 KB Output is correct
102 Correct 15 ms 348 KB Output is correct
103 Correct 15 ms 348 KB Output is correct
104 Correct 18 ms 348 KB Output is correct
105 Correct 16 ms 512 KB Output is correct
106 Correct 16 ms 348 KB Output is correct
107 Correct 25 ms 504 KB Output is correct
108 Correct 0 ms 348 KB Output is correct
109 Correct 99 ms 536 KB Output is correct
110 Correct 104 ms 532 KB Output is correct
111 Correct 99 ms 348 KB Output is correct
112 Correct 120 ms 348 KB Output is correct
113 Correct 119 ms 348 KB Output is correct
114 Correct 101 ms 344 KB Output is correct
115 Correct 99 ms 348 KB Output is correct
116 Correct 76 ms 528 KB Output is correct
117 Correct 70 ms 360 KB Output is correct
118 Correct 81 ms 524 KB Output is correct
119 Correct 72 ms 344 KB Output is correct
120 Correct 79 ms 528 KB Output is correct
121 Correct 62 ms 348 KB Output is correct
122 Correct 72 ms 344 KB Output is correct
123 Correct 73 ms 348 KB Output is correct
124 Correct 65 ms 520 KB Output is correct
125 Correct 71 ms 348 KB Output is correct
126 Correct 62 ms 344 KB Output is correct
127 Correct 67 ms 348 KB Output is correct
128 Correct 64 ms 348 KB Output is correct
129 Correct 79 ms 348 KB Output is correct
130 Correct 67 ms 344 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 91 ms 532 KB Output is correct
135 Correct 98 ms 348 KB Output is correct
136 Correct 94 ms 348 KB Output is correct
137 Correct 1438 ms 4572 KB Output is correct
138 Correct 1289 ms 4568 KB Output is correct
139 Correct 1429 ms 4572 KB Output is correct
140 Correct 1485 ms 4572 KB Output is correct
141 Correct 1464 ms 4572 KB Output is correct
142 Correct 1140 ms 856 KB Output is correct
143 Correct 1134 ms 980 KB Output is correct
144 Correct 1125 ms 856 KB Output is correct
145 Correct 1117 ms 860 KB Output is correct
146 Correct 1492 ms 860 KB Output is correct
147 Correct 1424 ms 856 KB Output is correct
148 Correct 0 ms 348 KB Output is correct
149 Correct 1427 ms 4572 KB Output is correct
150 Correct 1520 ms 4568 KB Output is correct
151 Correct 1261 ms 4572 KB Output is correct
152 Correct 1499 ms 4744 KB Output is correct
153 Correct 1530 ms 4572 KB Output is correct
154 Correct 1263 ms 4572 KB Output is correct
155 Correct 1487 ms 4572 KB Output is correct
156 Correct 1402 ms 4312 KB Output is correct
157 Correct 1306 ms 4484 KB Output is correct
158 Correct 1349 ms 4504 KB Output is correct
159 Correct 1411 ms 4308 KB Output is correct
160 Correct 1317 ms 4476 KB Output is correct
161 Correct 1425 ms 4312 KB Output is correct
162 Correct 1369 ms 4312 KB Output is correct
163 Correct 1453 ms 4316 KB Output is correct
164 Correct 1302 ms 4316 KB Output is correct
165 Correct 1219 ms 4316 KB Output is correct
166 Correct 1340 ms 4060 KB Output is correct
167 Correct 1364 ms 4316 KB Output is correct
168 Correct 1387 ms 4316 KB Output is correct
169 Incorrect 1206 ms 4056 KB Output isn't correct
170 Halted 0 ms 0 KB -