#include<bits/stdc++.h>
using namespace std;
int N;
int cnt,res;
vector<int>road[1515];
set<pair<int,int>>st;
struct UnionFind {
vector<int>par,size,cnt;
vector<vector<int>>cld;
UnionFind() {};
UnionFind(int n) {
par.resize(n);
size.resize(n,1);
cnt.resize(n);
cld.resize(n);
for(int i = 0; i < n; i++) {
par[i] = i;
cld[i].push_back(i);
}
}
int find(int x) {
if(par[x] == x) {
return x;
}
return par[x] = find(par[x]);
}
bool same(int u,int v) {
u = find(u);
v = find(v);
return (u == v);
}
void unite(int u,int v) {
u = find(u);
v = find(v);
if(u == v) return;
if(size[u] > size[v]) swap(u,v);
for(int i:cld[u]) {
cld[v].push_back(i);
for(int j:road[i]) {
if(!same(i,j) && same(j,v)) {
cnt[v] -= 2;
}
}
}
par[u] = v;
size[v] += size[u];
cnt[v] += cnt[u];
}
int consize(int x) {
x = find(x);
return size[x];
}
int concnt(int x) {
x = find(x);
return cnt[x];
}
};
UnionFind uf;
void initialize(int n) {
N = n;
cnt = 0;
res = n-1;
UnionFind init(n);
uf = init;
}
int hasEdge(int u, int v) {
if(u > v) swap(u,v);
st.insert({u,v});
if(uf.same(u,v)) {
cnt++;
return 0;
}
int a = uf.consize(u);
int b = uf.concnt(u);
if(a*(N-a) == b+1) {
uf.unite(u,v);
st.erase({u,v});
res--;
return 1;
}
a = uf.consize(v);
b = uf.concnt(v);
if(a*(N-a) == b+1) {
uf.unite(u,v);
st.erase({u,v});
res--;
return 1;
}
UnionFind flag(N);
for(int i = 0; i < N; i++) {
for(int j = i+1; j < N; j++) {
if(!st.count({i,j})) {
flag.unite(i,j);
}
}
}
if(flag.consize(0) != N) {
uf.unite(u,v);
st.erase({u,v});
return 1;
}
uf.cnt[uf.find(u)]++;
uf.cnt[uf.find(v)]++;
cnt++;
return 0;
}
/*
int main() {
int N;
cin >> N;
initialize(N);
for(int i = 0; i < N*(N-1)/2; i++) {
int u,v;
cin >> u >> v;
cout << hasEdge(u,v) << "\n";
}
}*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
0 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
9 ms |
340 KB |
Output is correct |
26 |
Correct |
11 ms |
480 KB |
Output is correct |
27 |
Correct |
9 ms |
340 KB |
Output is correct |
28 |
Correct |
9 ms |
340 KB |
Output is correct |
29 |
Correct |
9 ms |
356 KB |
Output is correct |
30 |
Correct |
10 ms |
476 KB |
Output is correct |
31 |
Correct |
9 ms |
340 KB |
Output is correct |
32 |
Correct |
11 ms |
468 KB |
Output is correct |
33 |
Correct |
10 ms |
340 KB |
Output is correct |
34 |
Correct |
420 ms |
448 KB |
Output is correct |
35 |
Correct |
451 ms |
488 KB |
Output is correct |
36 |
Correct |
448 ms |
468 KB |
Output is correct |
37 |
Correct |
459 ms |
592 KB |
Output is correct |
38 |
Correct |
440 ms |
560 KB |
Output is correct |
39 |
Correct |
461 ms |
512 KB |
Output is correct |
40 |
Correct |
428 ms |
492 KB |
Output is correct |
41 |
Correct |
419 ms |
488 KB |
Output is correct |
42 |
Correct |
437 ms |
496 KB |
Output is correct |
43 |
Correct |
338 ms |
576 KB |
Output is correct |
44 |
Correct |
364 ms |
572 KB |
Output is correct |
45 |
Correct |
439 ms |
592 KB |
Output is correct |
46 |
Correct |
424 ms |
504 KB |
Output is correct |
47 |
Correct |
445 ms |
668 KB |
Output is correct |
48 |
Correct |
429 ms |
512 KB |
Output is correct |
49 |
Correct |
460 ms |
424 KB |
Output is correct |
50 |
Correct |
424 ms |
652 KB |
Output is correct |
51 |
Correct |
431 ms |
512 KB |
Output is correct |
52 |
Correct |
426 ms |
504 KB |
Output is correct |
53 |
Correct |
412 ms |
516 KB |
Output is correct |
54 |
Correct |
417 ms |
512 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
0 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
0 ms |
340 KB |
Output is correct |
21 |
Correct |
0 ms |
340 KB |
Output is correct |
22 |
Correct |
0 ms |
340 KB |
Output is correct |
23 |
Correct |
0 ms |
340 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
9 ms |
340 KB |
Output is correct |
26 |
Correct |
9 ms |
340 KB |
Output is correct |
27 |
Correct |
9 ms |
340 KB |
Output is correct |
28 |
Correct |
9 ms |
360 KB |
Output is correct |
29 |
Correct |
9 ms |
340 KB |
Output is correct |
30 |
Correct |
10 ms |
364 KB |
Output is correct |
31 |
Correct |
9 ms |
356 KB |
Output is correct |
32 |
Correct |
11 ms |
348 KB |
Output is correct |
33 |
Correct |
9 ms |
356 KB |
Output is correct |
34 |
Correct |
454 ms |
488 KB |
Output is correct |
35 |
Correct |
439 ms |
600 KB |
Output is correct |
36 |
Correct |
443 ms |
488 KB |
Output is correct |
37 |
Correct |
440 ms |
600 KB |
Output is correct |
38 |
Correct |
429 ms |
616 KB |
Output is correct |
39 |
Correct |
437 ms |
568 KB |
Output is correct |
40 |
Correct |
483 ms |
604 KB |
Output is correct |
41 |
Correct |
414 ms |
464 KB |
Output is correct |
42 |
Correct |
416 ms |
556 KB |
Output is correct |
43 |
Correct |
360 ms |
480 KB |
Output is correct |
44 |
Correct |
402 ms |
692 KB |
Output is correct |
45 |
Correct |
463 ms |
544 KB |
Output is correct |
46 |
Correct |
453 ms |
584 KB |
Output is correct |
47 |
Correct |
422 ms |
536 KB |
Output is correct |
48 |
Correct |
433 ms |
508 KB |
Output is correct |
49 |
Correct |
441 ms |
612 KB |
Output is correct |
50 |
Correct |
401 ms |
476 KB |
Output is correct |
51 |
Correct |
421 ms |
500 KB |
Output is correct |
52 |
Correct |
442 ms |
500 KB |
Output is correct |
53 |
Correct |
408 ms |
500 KB |
Output is correct |
54 |
Correct |
426 ms |
504 KB |
Output is correct |
55 |
Execution timed out |
1082 ms |
456 KB |
Time limit exceeded |
56 |
Halted |
0 ms |
0 KB |
- |