#include <bits/stdc++.h>
using namespace std;
const int MAX_N = 1e6 + 5;
int W[MAX_N], E[MAX_N];
int id[MAX_N];
int parent[MAX_N], sz[MAX_N];
int find_parent(int u) {
if(u == parent[u]) {
return u;
}
return parent[u] = find_parent(parent[u]);
}
void merge(int u, int v) {
u = find_parent(u), v = find_parent(v);
if(u == v) {
return;
}
sz[u] += sz[v];
parent[v] = u;
}
int main() {
cin.tie(nullptr)->sync_with_stdio(false);
int N, M;
cin >> N >> M;
for(int i = 1; i <= N; i++) {
cin >> W[i] >> E[i];
}
sort(id + 1, id + N + 1, [&](const int &a, const int &b) {
return W[a] < W[b];
});
iota(parent + 1, parent + N + 1, 1);
fill(sz + 1, sz + N + 1, 1);
for(int l = 1, r = 2; l <= N; l++) {
while(r <= N and W[id[r]] <= E[id[l]]) {
merge(id[l], id[r]);
r++;
}
}
int ans = 0;
for(int i = 1; i <= N; i++) {
if(find_parent(i) == i) {
if(sz[i] > 1) {
ans += 4;
}
else if(M > 0) {
M--;
ans += 4;
}
else {
ans++;
}
}
}
while(M >= 2) {
ans += 4;
M -= 2;
}
ans += M;
cout << ans;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
356 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
324 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Incorrect |
2 ms |
584 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
468 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
724 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
5 ms |
848 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
32 ms |
4368 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
45 ms |
7372 KB |
Output is correct |
2 |
Correct |
123 ms |
15620 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
126 ms |
21504 KB |
Output is correct |
2 |
Incorrect |
158 ms |
25840 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
187 ms |
30208 KB |
Output is correct |
2 |
Incorrect |
199 ms |
32716 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
223 ms |
34388 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |