This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
vector<int> haha[200001];
vector<int> st(200001);
vector<int> wow[200001];
vector<int> ans(200001,0);
vector<int> dep(200001);
void dfs(int a, int t) {
st[a] = 1;
for(int v: haha[a]) {
if(v != t) {
dfs(v,a);
st[a]+=st[v];
}
}
}
void dude(int a, int t, int d) {
st[a] = 1;
int p = -1,big = 0;
dep[a] = d;
for(int v: haha[a]) {
if(v != t) {
dude(v,a,d+1);
st[a]+=st[v];
if(st[v] > big) {
big = st[v];
p = v;
}
}
}
if(p == -1) {
wow[a].push_back(d);
}
else {
swap(wow[a],wow[p]);
for(int v: haha[a]) {
if(v != t && v != p) {
for(int j = 0; j < wow[v].size(); j++) {
ans[j+1] = max(ans[j+1],wow[v][j]+wow[a][j]-2*d);
wow[a][j] = max(wow[a][j],wow[v][j]);
}
for(int j = wow[v].size()-2; j >= 0; j--) {
wow[v][j] = max(wow[v][j],wow[v][j+1]);
}
}
}
for(int i = wow[a].size(); i < st[a]; i++) {
wow[a].push_back(d);
}
cout << a << endl;
for(int v: wow[a]) {
cout << v << " ";
}
cout << endl;
}
}
int main()
{
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
cout.tie(NULL);
int n,a,b;
cin >> n;
for(int i = 0; i < n-1; i++) {
cin >> a >> b;
haha[a].push_back(b);
haha[b].push_back(a);
}
cout << "AJSDIJDS" << endl;
dfs(1,-1);
int c = 1;
bool yeah = true;
while(yeah) {
yeah = false;
for(int v: haha[c]) {
if(st[v] > n/2 && st[v] < st[c]) {
c = v;
yeah = true;
break;
}
}
}
dude(c,-1,0);
for(int i = 1; i <= n; i++) {
if(i != c) {
cout << i << " " << st[i] << endl;
ans[st[i]] = max(ans[st[i]],dep[i]);
}
}
for(int i = n-1; i >= 1; i--) {
ans[i] = max(ans[i],ans[i+1]);
}
for(int i = 1; i <= n; i++) {
if(i%2 == 0) {
cout << ans[i/2]+1 << "\n";
}
else {
cout << 1 << "\n";
}
}
return 0;
}
Compilation message (stderr)
meetings2.cpp: In function 'void dude(int, int, int)':
meetings2.cpp:41:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | for(int j = 0; j < wow[v].size(); j++) {
| ~~^~~~~~~~~~~~~~~
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