| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 703192 |
2023-02-26T13:42:14 Z |
Nursik |
Paths (RMI21_paths) |
C++14 |
|
119 ms |
21416 KB |
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
#include <set>
#include <map>
#include <cstring>
#include <string>
#include <cmath>
#include <cassert>
#include <ctime>
#include <algorithm>
#include <sstream>
#include <list>
#include <queue>
#include <deque>
#include <stack>
#include <cstdlib>
#include <cstdio>
#include <iterator>
#include <functional>
#include <unordered_set>
#include <unordered_map>
#include <stdio.h>
#include <bitset>
#include <cstdint>
#include <cassert>
#include <functional>
#include <complex>
#include <random>
using namespace std;
#define ll long long
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define ld long double
const ll maxn = 1e5 + 10, maxm = 3e5 + 1;
const ll mod = 1e9 + 7, cmod = 998244353, inf = 1e9, blcok = 400, p2 = 31;
const ld eps = 1e-9;
ll rng(){
return (((ll)rand() << 15) + rand());
}
struct node{
int sz;
ll sum;
ll key, prior, kol;
node *l, *r;
node(int x){
key = x, prior = rng(), kol = 1;
sum = x; sz = 1;
l = r = nullptr;
}
};
struct treap{
int getsz(node *v){
return (v == nullptr ? 0 : v->sz);
}
int getsum(node *v){
return (v == nullptr ? 0 : v->sum);
}
void pull(node *v){
v->sum = getsum(v->l) + getsum(v->r) + v->kol * v->key;
v->sz = getsz(v->l) + getsz(v->r) + v->kol;
}
pair<node*, node*> split(node* &v, int x){
if (v == nullptr)
return mp(nullptr, nullptr);
if (v->key < x){
pair<node*, node*> splitted = split(v->r, x);
v->r = splitted.f;
pull(v);
return mp(v, splitted.s);
}
else{
pair<node*, node*> splitted = split(v->l, x);
v->l = splitted.s;
pull(v);
return mp(splitted.f, v);
}
}
node* merge(node *l, node *r){
if (l == nullptr || r == nullptr)
return (l ? l : r);
if (l->prior > r->prior){
l->r = merge(l->r, r);
pull(l);
return l;
}
else{
r->l = merge(l, r->l);
pull(r);
return r;
}
}
ll get(node* &v, ll k){
if (k == 0)
return 0;
/* cout << v->key << " " << v->kol << '\n';
cout << v->sz << '\n';
cout << getsz(v->l) << '\n';
cout << getsum(v->l) << '\n';*///
if (getsz(v->l) + v->kol <= k){
return getsum(v->l) + v->kol * v->key + get(v->r, k - getsz(v->l) - v->kol);
}
else if (getsz(v->l) <= k){
// cout << "kek\n";
// cout << get
//cout << (k - getsz(v->l)) * v->key << " " << v->key << '\n';;
return getsum(v->l) + (k - getsz(v->l)) * v->key;
}
else{
return get(v->l, k);
}
}
} t;
node *root;
int n, k, leafs;
ll dp[maxn], ans[maxn];
vector<pair<int, int>> g[maxn];
vector<ll> vec;
void add(ll med){
pair<node*, node*> spl1 = t.split(root, med);
pair<node*, node*> spl2 = t.split(spl1.s, med + 1);
if (spl2.f != nullptr){
spl2.f->kol += 1;
spl2.f->sz += 1;
spl2.f->sum += med;
}
else{
spl2.f = new node(med);
}
root = t.merge(t.merge(spl1.f, spl2.f), spl2.s);
}
void del(ll med){
pair<node*, node*> spl1 = t.split(root, med);
pair<node*, node*> spl2 = t.split(spl1.s, med + 1);
if (spl2.f != nullptr){
spl2.f->kol -= 1;
spl2.f->sz -= 1;
spl2.f->sum -= med;
if (spl2.f->kol == 0){
spl2.f = nullptr;
}
}
root = t.merge(t.merge(spl1.f, spl2.f), spl2.s);
}
void dfs(int v = 1, int p = 0){
dp[v] = 0;
for (auto to : g[v]){
int go = to.f, w = to.s;
if (go != p){
dfs(go, v);
dp[v] = max(dp[v], dp[go] + w);
}
}
int is = 0;
for (auto to : g[v]){
int go = to.f, w = to.s;
if (go != p){
if (dp[v] != dp[go] + w || is){
ll z = dp[go] + w;
add(z);
}
else{
is = 1;
}
}
}
}
void dfs2(int v = 1, int p = 0, int type = 0){
vector<ll> sadd, sdel;
int is = 0;
for (auto to : g[v]){
int go = to.f, w = to.s;
if (go != p){
if (dp[v] != dp[go] + w || is){
ll z = dp[go] + w;
del(z);
sadd.pb(z);
}
else{
is = 1;
}
}
}
// cout << root->sum << '\n';
for (auto to : g[v]){
int go = to.f, w = to.s;
dp[v] = max(dp[v], dp[go] + w);
}
is = 0;
for (auto to : g[v]){
int go = to.f, w = to.s;
if (dp[v] != dp[go] + w || is){
ll z = dp[go] + w;
add(z);
sdel.pb(z);
}
else{
if (go == p && type == 1){
ll z = dp[go];
del(z);
// cout << "kek\n";
sadd.pb(z);
}
is = 1;
}
}
int lakers = root->sz;
ans[v] = dp[v] + root->sum - t.get(root, lakers - (k - 1));
multiset<ll> setik;
for (auto to : g[v]){
int go = to.f, w = to.s;
setik.insert(dp[go] + w);
}
for (auto to : g[v]){
int go = to.f, w = to.s;
if (go != p){
ll prevdp = dp[v];
ll z = dp[go] + w;
int isdel = 0;
if (*setik.rbegin() != z){
del(z);
isdel = 1;
}
setik.erase(setik.find(z));
dp[v] = *setik.rbegin();
dfs2(go, v, !isdel);
setik.insert(z);
if (isdel){
add(z);
}
dp[v] = prevdp;
}
}
for (auto it : sadd){
add(it);
}
for (auto it : sdel){
del(it);
}
dp[v] = -inf;
for (auto to : g[v]){
int go = to.s, w = to.s;
if (go != p){
dp[v] = max(dp[v], dp[go] + w);
}
}
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
// freopen("paths.in", "r", stdin);
// freopen("paths.out", "w", stdout);
cin >> n >> k;
ll allsum = 0;
for (int u, v, c, i = 1; i < n; ++i){
cin >> u >> v >> c;
g[u].pb(mp(v, c));
g[v].pb(mp(u, c));
allsum += c;
}
for (int i = 1; i <= n; ++i){
leafs += ((int)g[i].size() == 1);
}
if (leafs <= k){
for (int i = 1; i <= n; ++i){
cout << allsum << " ";
}
exit(0);
}
dfs();
dfs2();
cout << "ok\n";
exit(0);
for (int i = 1; i <= n; ++i){
cout << ans[i] << "\n";
}
}
/*
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
5204 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
5204 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
5204 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
5204 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
119 ms |
21416 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
4 ms |
5204 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
