///~~~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();
for(int i=1;i<=n;i++)
siz[i]=1;
vector<int> v,u,a,b;
for(int i=0;i<n;i++)
z[{x[i],y[i]}]=i+1;
for(auto& i:z){
p=i.ff.ff;
q=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 |
1 ms |
344 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 |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
151 ms |
27360 KB |
Output is correct |
10 |
Correct |
10 ms |
3164 KB |
Output is correct |
11 |
Correct |
71 ms |
14900 KB |
Output is correct |
12 |
Correct |
15 ms |
4696 KB |
Output is correct |
13 |
Correct |
40 ms |
10832 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
2 ms |
860 KB |
Output is correct |
16 |
Correct |
155 ms |
26676 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
151 ms |
27360 KB |
Output is correct |
10 |
Correct |
10 ms |
3164 KB |
Output is correct |
11 |
Correct |
71 ms |
14900 KB |
Output is correct |
12 |
Correct |
15 ms |
4696 KB |
Output is correct |
13 |
Correct |
40 ms |
10832 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
2 ms |
860 KB |
Output is correct |
16 |
Correct |
155 ms |
26676 KB |
Output is correct |
17 |
Correct |
0 ms |
600 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
352 KB |
Output is correct |
22 |
Correct |
0 ms |
356 KB |
Output is correct |
23 |
Correct |
312 ms |
46940 KB |
Output is correct |
24 |
Correct |
1 ms |
360 KB |
Output is correct |
25 |
Correct |
1 ms |
612 KB |
Output is correct |
26 |
Correct |
3 ms |
860 KB |
Output is correct |
27 |
Correct |
3 ms |
1116 KB |
Output is correct |
28 |
Correct |
101 ms |
19568 KB |
Output is correct |
29 |
Correct |
168 ms |
29264 KB |
Output is correct |
30 |
Correct |
244 ms |
39084 KB |
Output is correct |
31 |
Correct |
336 ms |
48616 KB |
Output is correct |
32 |
Correct |
0 ms |
600 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 |
448 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
1 ms |
344 KB |
Output is correct |
43 |
Correct |
2 ms |
860 KB |
Output is correct |
44 |
Correct |
2 ms |
1008 KB |
Output is correct |
45 |
Correct |
137 ms |
26200 KB |
Output is correct |
46 |
Correct |
234 ms |
37876 KB |
Output is correct |
47 |
Correct |
222 ms |
37772 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
151 ms |
27360 KB |
Output is correct |
10 |
Correct |
10 ms |
3164 KB |
Output is correct |
11 |
Correct |
71 ms |
14900 KB |
Output is correct |
12 |
Correct |
15 ms |
4696 KB |
Output is correct |
13 |
Correct |
40 ms |
10832 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
2 ms |
860 KB |
Output is correct |
16 |
Correct |
155 ms |
26676 KB |
Output is correct |
17 |
Correct |
0 ms |
600 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
352 KB |
Output is correct |
22 |
Correct |
0 ms |
356 KB |
Output is correct |
23 |
Correct |
312 ms |
46940 KB |
Output is correct |
24 |
Correct |
1 ms |
360 KB |
Output is correct |
25 |
Correct |
1 ms |
612 KB |
Output is correct |
26 |
Correct |
3 ms |
860 KB |
Output is correct |
27 |
Correct |
3 ms |
1116 KB |
Output is correct |
28 |
Correct |
101 ms |
19568 KB |
Output is correct |
29 |
Correct |
168 ms |
29264 KB |
Output is correct |
30 |
Correct |
244 ms |
39084 KB |
Output is correct |
31 |
Correct |
336 ms |
48616 KB |
Output is correct |
32 |
Correct |
0 ms |
600 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 |
448 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
1 ms |
344 KB |
Output is correct |
43 |
Correct |
2 ms |
860 KB |
Output is correct |
44 |
Correct |
2 ms |
1008 KB |
Output is correct |
45 |
Correct |
137 ms |
26200 KB |
Output is correct |
46 |
Correct |
234 ms |
37876 KB |
Output is correct |
47 |
Correct |
222 ms |
37772 KB |
Output is correct |
48 |
Correct |
0 ms |
344 KB |
Output is correct |
49 |
Correct |
0 ms |
344 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 |
317 ms |
45980 KB |
Output is correct |
56 |
Correct |
0 ms |
348 KB |
Output is correct |
57 |
Correct |
2 ms |
860 KB |
Output is correct |
58 |
Correct |
8 ms |
1816 KB |
Output is correct |
59 |
Correct |
7 ms |
2392 KB |
Output is correct |
60 |
Correct |
127 ms |
23088 KB |
Output is correct |
61 |
Correct |
194 ms |
31144 KB |
Output is correct |
62 |
Correct |
239 ms |
38312 KB |
Output is correct |
63 |
Correct |
322 ms |
46148 KB |
Output is correct |
64 |
Correct |
0 ms |
344 KB |
Output is correct |
65 |
Correct |
1 ms |
600 KB |
Output is correct |
66 |
Correct |
0 ms |
344 KB |
Output is correct |
67 |
Correct |
364 ms |
54184 KB |
Output is correct |
68 |
Correct |
354 ms |
55048 KB |
Output is correct |
69 |
Correct |
346 ms |
53924 KB |
Output is correct |
70 |
Correct |
3 ms |
1112 KB |
Output is correct |
71 |
Correct |
6 ms |
2140 KB |
Output is correct |
72 |
Correct |
145 ms |
25856 KB |
Output is correct |
73 |
Correct |
244 ms |
38696 KB |
Output is correct |
74 |
Correct |
380 ms |
51296 KB |
Output is correct |
75 |
Correct |
340 ms |
49576 KB |
Output is correct |
76 |
Correct |
340 ms |
54948 KB |
Output is correct |
77 |
Correct |
4 ms |
1372 KB |
Output is correct |
78 |
Correct |
7 ms |
2256 KB |
Output is correct |
79 |
Correct |
142 ms |
25448 KB |
Output is correct |
80 |
Correct |
267 ms |
37456 KB |
Output is correct |
81 |
Correct |
341 ms |
50388 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
151 ms |
27360 KB |
Output is correct |
10 |
Correct |
10 ms |
3164 KB |
Output is correct |
11 |
Correct |
71 ms |
14900 KB |
Output is correct |
12 |
Correct |
15 ms |
4696 KB |
Output is correct |
13 |
Correct |
40 ms |
10832 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
2 ms |
860 KB |
Output is correct |
16 |
Correct |
155 ms |
26676 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 |
333 ms |
45852 KB |
Output is correct |
21 |
Correct |
355 ms |
54748 KB |
Output is correct |
22 |
Correct |
305 ms |
48368 KB |
Output is correct |
23 |
Correct |
276 ms |
46252 KB |
Output is correct |
24 |
Correct |
234 ms |
43744 KB |
Output is correct |
25 |
Correct |
307 ms |
47400 KB |
Output is correct |
26 |
Correct |
257 ms |
47272 KB |
Output is correct |
27 |
Correct |
353 ms |
53668 KB |
Output is correct |
28 |
Correct |
347 ms |
53672 KB |
Output is correct |
29 |
Correct |
345 ms |
53640 KB |
Output is correct |
30 |
Correct |
342 ms |
53668 KB |
Output is correct |
31 |
Correct |
0 ms |
344 KB |
Output is correct |
32 |
Incorrect |
6 ms |
1880 KB |
Solution announced impossible, but it is possible. |
33 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
151 ms |
27360 KB |
Output is correct |
10 |
Correct |
10 ms |
3164 KB |
Output is correct |
11 |
Correct |
71 ms |
14900 KB |
Output is correct |
12 |
Correct |
15 ms |
4696 KB |
Output is correct |
13 |
Correct |
40 ms |
10832 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
2 ms |
860 KB |
Output is correct |
16 |
Correct |
155 ms |
26676 KB |
Output is correct |
17 |
Correct |
339 ms |
52648 KB |
Output is correct |
18 |
Correct |
378 ms |
55300 KB |
Output is correct |
19 |
Correct |
321 ms |
51808 KB |
Output is correct |
20 |
Correct |
286 ms |
44432 KB |
Output is correct |
21 |
Correct |
252 ms |
44712 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Incorrect |
13 ms |
3676 KB |
Solution announced impossible, but it is possible. |
24 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 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 |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
151 ms |
27360 KB |
Output is correct |
10 |
Correct |
10 ms |
3164 KB |
Output is correct |
11 |
Correct |
71 ms |
14900 KB |
Output is correct |
12 |
Correct |
15 ms |
4696 KB |
Output is correct |
13 |
Correct |
40 ms |
10832 KB |
Output is correct |
14 |
Correct |
1 ms |
604 KB |
Output is correct |
15 |
Correct |
2 ms |
860 KB |
Output is correct |
16 |
Correct |
155 ms |
26676 KB |
Output is correct |
17 |
Correct |
0 ms |
600 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
352 KB |
Output is correct |
22 |
Correct |
0 ms |
356 KB |
Output is correct |
23 |
Correct |
312 ms |
46940 KB |
Output is correct |
24 |
Correct |
1 ms |
360 KB |
Output is correct |
25 |
Correct |
1 ms |
612 KB |
Output is correct |
26 |
Correct |
3 ms |
860 KB |
Output is correct |
27 |
Correct |
3 ms |
1116 KB |
Output is correct |
28 |
Correct |
101 ms |
19568 KB |
Output is correct |
29 |
Correct |
168 ms |
29264 KB |
Output is correct |
30 |
Correct |
244 ms |
39084 KB |
Output is correct |
31 |
Correct |
336 ms |
48616 KB |
Output is correct |
32 |
Correct |
0 ms |
600 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 |
448 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
1 ms |
344 KB |
Output is correct |
43 |
Correct |
2 ms |
860 KB |
Output is correct |
44 |
Correct |
2 ms |
1008 KB |
Output is correct |
45 |
Correct |
137 ms |
26200 KB |
Output is correct |
46 |
Correct |
234 ms |
37876 KB |
Output is correct |
47 |
Correct |
222 ms |
37772 KB |
Output is correct |
48 |
Correct |
0 ms |
344 KB |
Output is correct |
49 |
Correct |
0 ms |
344 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 |
317 ms |
45980 KB |
Output is correct |
56 |
Correct |
0 ms |
348 KB |
Output is correct |
57 |
Correct |
2 ms |
860 KB |
Output is correct |
58 |
Correct |
8 ms |
1816 KB |
Output is correct |
59 |
Correct |
7 ms |
2392 KB |
Output is correct |
60 |
Correct |
127 ms |
23088 KB |
Output is correct |
61 |
Correct |
194 ms |
31144 KB |
Output is correct |
62 |
Correct |
239 ms |
38312 KB |
Output is correct |
63 |
Correct |
322 ms |
46148 KB |
Output is correct |
64 |
Correct |
0 ms |
344 KB |
Output is correct |
65 |
Correct |
1 ms |
600 KB |
Output is correct |
66 |
Correct |
0 ms |
344 KB |
Output is correct |
67 |
Correct |
364 ms |
54184 KB |
Output is correct |
68 |
Correct |
354 ms |
55048 KB |
Output is correct |
69 |
Correct |
346 ms |
53924 KB |
Output is correct |
70 |
Correct |
3 ms |
1112 KB |
Output is correct |
71 |
Correct |
6 ms |
2140 KB |
Output is correct |
72 |
Correct |
145 ms |
25856 KB |
Output is correct |
73 |
Correct |
244 ms |
38696 KB |
Output is correct |
74 |
Correct |
380 ms |
51296 KB |
Output is correct |
75 |
Correct |
340 ms |
49576 KB |
Output is correct |
76 |
Correct |
340 ms |
54948 KB |
Output is correct |
77 |
Correct |
4 ms |
1372 KB |
Output is correct |
78 |
Correct |
7 ms |
2256 KB |
Output is correct |
79 |
Correct |
142 ms |
25448 KB |
Output is correct |
80 |
Correct |
267 ms |
37456 KB |
Output is correct |
81 |
Correct |
341 ms |
50388 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 |
333 ms |
45852 KB |
Output is correct |
86 |
Correct |
355 ms |
54748 KB |
Output is correct |
87 |
Correct |
305 ms |
48368 KB |
Output is correct |
88 |
Correct |
276 ms |
46252 KB |
Output is correct |
89 |
Correct |
234 ms |
43744 KB |
Output is correct |
90 |
Correct |
307 ms |
47400 KB |
Output is correct |
91 |
Correct |
257 ms |
47272 KB |
Output is correct |
92 |
Correct |
353 ms |
53668 KB |
Output is correct |
93 |
Correct |
347 ms |
53672 KB |
Output is correct |
94 |
Correct |
345 ms |
53640 KB |
Output is correct |
95 |
Correct |
342 ms |
53668 KB |
Output is correct |
96 |
Correct |
0 ms |
344 KB |
Output is correct |
97 |
Incorrect |
6 ms |
1880 KB |
Solution announced impossible, but it is possible. |
98 |
Halted |
0 ms |
0 KB |
- |