///~~~LOTA~~~///
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
#define ff first
#define ss second
#define ll long long
#define append push_back
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define N 200001
int siz[N];
int par[N];
int root(int v){
if(!par[v]) return v;
par[v]=root(par[v]);
return par[v];
}
void merge(int v,int u){
v=root(v);
u=root(u);
par[u]=v;
siz[v]+=siz[u];
}
bool same(int v,int u){
return (root(v)==root(u));
}
int construct_roads(vector<int> x,vector<int> y){
map<pii,int> c,z;
int n,m,o,p,q,r;
n=x.size();
vector<int> v,u,a,b;
vector<pair<pii,int>> w;
for(int i=0;i<n;i++){
w.append({{y[i],x[i]},i+1});
z[{x[i],y[i]}]=i+1;
siz[i+1]=1;
}
sort(all(w));
for(auto& i:w){
q=i.ff.ff;
p=i.ff.ss;
r=z[{p-2,q}];
if(r){
if(!same(i.ss,r)){
merge(i.ss,r);
v.append(i.ss-1);
u.append(r-1);
if(!c[{p-1,q-1}]){
a.append(p-1);
b.append(q-1);
c[{p-1,q-1}]=1;
}
else if(!c[{p-1,q+1}]){
a.append(p-1);
b.append(q+1);
c[{p-1,q+1}]=1;
}
else return 0;
}
}
r=z[{p,q-2}];
if(r){
if(!same(i.ss,r)){
merge(i.ss,r);
v.append(i.ss-1);
u.append(r-1);
if(!c[{p-1,q-1}]){
a.append(p-1);
b.append(q-1);
c[{p-1,q-1}]=1;
}
else if(!c[{p+1,q-1}]){
a.append(p+1);
b.append(q-1);
c[{p+1,q-1}]=1;
}
else return 0;
}
}
}
if(siz[root(1)]!=n) return 0;
build(u,v,a,b);
return 1;
}
Compilation message
parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:31:11: warning: unused variable 'm' [-Wunused-variable]
31 | int n,m,o,p,q,r;
| ^
parks.cpp:31:13: warning: unused variable 'o' [-Wunused-variable]
31 | int n,m,o,p,q,r;
| ^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 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 |
147 ms |
28580 KB |
Output is correct |
10 |
Correct |
10 ms |
3296 KB |
Output is correct |
11 |
Correct |
63 ms |
15652 KB |
Output is correct |
12 |
Correct |
15 ms |
4776 KB |
Output is correct |
13 |
Correct |
38 ms |
11224 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
3 ms |
860 KB |
Output is correct |
16 |
Correct |
151 ms |
28000 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 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 |
147 ms |
28580 KB |
Output is correct |
10 |
Correct |
10 ms |
3296 KB |
Output is correct |
11 |
Correct |
63 ms |
15652 KB |
Output is correct |
12 |
Correct |
15 ms |
4776 KB |
Output is correct |
13 |
Correct |
38 ms |
11224 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
3 ms |
860 KB |
Output is correct |
16 |
Correct |
151 ms |
28000 KB |
Output is correct |
17 |
Correct |
0 ms |
600 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 |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
359 ms |
48868 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
2 ms |
856 KB |
Output is correct |
27 |
Correct |
4 ms |
1112 KB |
Output is correct |
28 |
Correct |
103 ms |
19716 KB |
Output is correct |
29 |
Correct |
170 ms |
29648 KB |
Output is correct |
30 |
Correct |
266 ms |
40192 KB |
Output is correct |
31 |
Correct |
324 ms |
49036 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 |
1 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 |
1 ms |
344 KB |
Output is correct |
41 |
Correct |
1 ms |
344 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
3 ms |
860 KB |
Output is correct |
44 |
Correct |
3 ms |
1116 KB |
Output is correct |
45 |
Correct |
142 ms |
26916 KB |
Output is correct |
46 |
Correct |
251 ms |
39680 KB |
Output is correct |
47 |
Correct |
228 ms |
40000 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 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 |
147 ms |
28580 KB |
Output is correct |
10 |
Correct |
10 ms |
3296 KB |
Output is correct |
11 |
Correct |
63 ms |
15652 KB |
Output is correct |
12 |
Correct |
15 ms |
4776 KB |
Output is correct |
13 |
Correct |
38 ms |
11224 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
3 ms |
860 KB |
Output is correct |
16 |
Correct |
151 ms |
28000 KB |
Output is correct |
17 |
Correct |
0 ms |
600 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 |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
359 ms |
48868 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
2 ms |
856 KB |
Output is correct |
27 |
Correct |
4 ms |
1112 KB |
Output is correct |
28 |
Correct |
103 ms |
19716 KB |
Output is correct |
29 |
Correct |
170 ms |
29648 KB |
Output is correct |
30 |
Correct |
266 ms |
40192 KB |
Output is correct |
31 |
Correct |
324 ms |
49036 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 |
1 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 |
1 ms |
344 KB |
Output is correct |
41 |
Correct |
1 ms |
344 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
3 ms |
860 KB |
Output is correct |
44 |
Correct |
3 ms |
1116 KB |
Output is correct |
45 |
Correct |
142 ms |
26916 KB |
Output is correct |
46 |
Correct |
251 ms |
39680 KB |
Output is correct |
47 |
Correct |
228 ms |
40000 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 |
344 KB |
Output is correct |
54 |
Correct |
0 ms |
348 KB |
Output is correct |
55 |
Correct |
354 ms |
46748 KB |
Output is correct |
56 |
Correct |
0 ms |
348 KB |
Output is correct |
57 |
Correct |
2 ms |
860 KB |
Output is correct |
58 |
Correct |
6 ms |
1884 KB |
Output is correct |
59 |
Correct |
9 ms |
2396 KB |
Output is correct |
60 |
Correct |
152 ms |
23696 KB |
Output is correct |
61 |
Correct |
200 ms |
33940 KB |
Output is correct |
62 |
Correct |
254 ms |
39432 KB |
Output is correct |
63 |
Correct |
359 ms |
47164 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 |
371 ms |
55372 KB |
Output is correct |
68 |
Correct |
385 ms |
56648 KB |
Output is correct |
69 |
Correct |
369 ms |
56160 KB |
Output is correct |
70 |
Correct |
3 ms |
1112 KB |
Output is correct |
71 |
Correct |
7 ms |
2136 KB |
Output is correct |
72 |
Correct |
185 ms |
26548 KB |
Output is correct |
73 |
Correct |
246 ms |
40720 KB |
Output is correct |
74 |
Correct |
396 ms |
53256 KB |
Output is correct |
75 |
Correct |
356 ms |
51176 KB |
Output is correct |
76 |
Correct |
375 ms |
55852 KB |
Output is correct |
77 |
Correct |
4 ms |
1368 KB |
Output is correct |
78 |
Correct |
8 ms |
2396 KB |
Output is correct |
79 |
Correct |
145 ms |
25744 KB |
Output is correct |
80 |
Correct |
245 ms |
38788 KB |
Output is correct |
81 |
Correct |
350 ms |
52392 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 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 |
147 ms |
28580 KB |
Output is correct |
10 |
Correct |
10 ms |
3296 KB |
Output is correct |
11 |
Correct |
63 ms |
15652 KB |
Output is correct |
12 |
Correct |
15 ms |
4776 KB |
Output is correct |
13 |
Correct |
38 ms |
11224 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
3 ms |
860 KB |
Output is correct |
16 |
Correct |
151 ms |
28000 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
344 KB |
Output is correct |
20 |
Correct |
322 ms |
50728 KB |
Output is correct |
21 |
Correct |
340 ms |
56336 KB |
Output is correct |
22 |
Correct |
323 ms |
50096 KB |
Output is correct |
23 |
Correct |
297 ms |
47564 KB |
Output is correct |
24 |
Correct |
376 ms |
44264 KB |
Output is correct |
25 |
Correct |
394 ms |
48372 KB |
Output is correct |
26 |
Correct |
441 ms |
49240 KB |
Output is correct |
27 |
Correct |
492 ms |
54884 KB |
Output is correct |
28 |
Correct |
481 ms |
55216 KB |
Output is correct |
29 |
Correct |
431 ms |
55188 KB |
Output is correct |
30 |
Correct |
427 ms |
55040 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Incorrect |
8 ms |
1884 KB |
Solution announced impossible, but it is possible. |
33 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 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 |
147 ms |
28580 KB |
Output is correct |
10 |
Correct |
10 ms |
3296 KB |
Output is correct |
11 |
Correct |
63 ms |
15652 KB |
Output is correct |
12 |
Correct |
15 ms |
4776 KB |
Output is correct |
13 |
Correct |
38 ms |
11224 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
3 ms |
860 KB |
Output is correct |
16 |
Correct |
151 ms |
28000 KB |
Output is correct |
17 |
Correct |
362 ms |
56048 KB |
Output is correct |
18 |
Correct |
380 ms |
56192 KB |
Output is correct |
19 |
Incorrect |
221 ms |
32512 KB |
Solution announced impossible, but it is possible. |
20 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
344 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 |
147 ms |
28580 KB |
Output is correct |
10 |
Correct |
10 ms |
3296 KB |
Output is correct |
11 |
Correct |
63 ms |
15652 KB |
Output is correct |
12 |
Correct |
15 ms |
4776 KB |
Output is correct |
13 |
Correct |
38 ms |
11224 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
3 ms |
860 KB |
Output is correct |
16 |
Correct |
151 ms |
28000 KB |
Output is correct |
17 |
Correct |
0 ms |
600 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 |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
359 ms |
48868 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
2 ms |
856 KB |
Output is correct |
27 |
Correct |
4 ms |
1112 KB |
Output is correct |
28 |
Correct |
103 ms |
19716 KB |
Output is correct |
29 |
Correct |
170 ms |
29648 KB |
Output is correct |
30 |
Correct |
266 ms |
40192 KB |
Output is correct |
31 |
Correct |
324 ms |
49036 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 |
1 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 |
1 ms |
344 KB |
Output is correct |
41 |
Correct |
1 ms |
344 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
3 ms |
860 KB |
Output is correct |
44 |
Correct |
3 ms |
1116 KB |
Output is correct |
45 |
Correct |
142 ms |
26916 KB |
Output is correct |
46 |
Correct |
251 ms |
39680 KB |
Output is correct |
47 |
Correct |
228 ms |
40000 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 |
344 KB |
Output is correct |
54 |
Correct |
0 ms |
348 KB |
Output is correct |
55 |
Correct |
354 ms |
46748 KB |
Output is correct |
56 |
Correct |
0 ms |
348 KB |
Output is correct |
57 |
Correct |
2 ms |
860 KB |
Output is correct |
58 |
Correct |
6 ms |
1884 KB |
Output is correct |
59 |
Correct |
9 ms |
2396 KB |
Output is correct |
60 |
Correct |
152 ms |
23696 KB |
Output is correct |
61 |
Correct |
200 ms |
33940 KB |
Output is correct |
62 |
Correct |
254 ms |
39432 KB |
Output is correct |
63 |
Correct |
359 ms |
47164 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 |
371 ms |
55372 KB |
Output is correct |
68 |
Correct |
385 ms |
56648 KB |
Output is correct |
69 |
Correct |
369 ms |
56160 KB |
Output is correct |
70 |
Correct |
3 ms |
1112 KB |
Output is correct |
71 |
Correct |
7 ms |
2136 KB |
Output is correct |
72 |
Correct |
185 ms |
26548 KB |
Output is correct |
73 |
Correct |
246 ms |
40720 KB |
Output is correct |
74 |
Correct |
396 ms |
53256 KB |
Output is correct |
75 |
Correct |
356 ms |
51176 KB |
Output is correct |
76 |
Correct |
375 ms |
55852 KB |
Output is correct |
77 |
Correct |
4 ms |
1368 KB |
Output is correct |
78 |
Correct |
8 ms |
2396 KB |
Output is correct |
79 |
Correct |
145 ms |
25744 KB |
Output is correct |
80 |
Correct |
245 ms |
38788 KB |
Output is correct |
81 |
Correct |
350 ms |
52392 KB |
Output is correct |
82 |
Correct |
0 ms |
348 KB |
Output is correct |
83 |
Correct |
1 ms |
348 KB |
Output is correct |
84 |
Correct |
1 ms |
344 KB |
Output is correct |
85 |
Correct |
322 ms |
50728 KB |
Output is correct |
86 |
Correct |
340 ms |
56336 KB |
Output is correct |
87 |
Correct |
323 ms |
50096 KB |
Output is correct |
88 |
Correct |
297 ms |
47564 KB |
Output is correct |
89 |
Correct |
376 ms |
44264 KB |
Output is correct |
90 |
Correct |
394 ms |
48372 KB |
Output is correct |
91 |
Correct |
441 ms |
49240 KB |
Output is correct |
92 |
Correct |
492 ms |
54884 KB |
Output is correct |
93 |
Correct |
481 ms |
55216 KB |
Output is correct |
94 |
Correct |
431 ms |
55188 KB |
Output is correct |
95 |
Correct |
427 ms |
55040 KB |
Output is correct |
96 |
Correct |
0 ms |
348 KB |
Output is correct |
97 |
Incorrect |
8 ms |
1884 KB |
Solution announced impossible, but it is possible. |
98 |
Halted |
0 ms |
0 KB |
- |