| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 719034 |
2023-04-05T08:57:14 Z |
Sam_a17 |
Village (BOI20_village) |
C++17 |
|
9 ms |
14420 KB |
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;
#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif
#define sz(x) (int((x).size()))
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());
#define blt(x) __builtin_popcount(x)
#define pb push_back
#define popf pop_front
#define popb pop_back
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(deque <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'
// for grid problems
int dx[8] = {-1,0,1,0,1,-1,1,-1};
int dy[8] = {0,1,0,-1,1,1,-1,-1};
// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
fastIO();
if (str != "") {
freopen((str + ".in").c_str(), "r", stdin);
freopen((str + ".out").c_str(), "w", stdout);
}
}
// Indexed Set
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const long long N = 2e5 + 10, inf = 1e8;
vector<int> adj[N];
long long dp[N][2], each[N], pat[N];
long long min_answ;
vector<pair<int, int>> dpp[N][2];
void dfs(int node, int parent) {
int c = 0;
for(auto i: adj[node]) {
if(i == parent) continue;
dfs(i, node);
c++;
}
if(!c) {
dp[node][0] = 0;
dp[node][1] = inf;
} else {
long long s = 0;
for(auto i: adj[node]) {
if(i == parent) continue;
dp[node][0] += dp[i][1];
dp[node][0] = min(dp[node][0], inf);
s += min(dp[i][1], dp[i][0] + 2);
if(dp[i][0] + 2 < dp[i][1]) {
dpp[node][1].push_back({i, 1});
} else {
dpp[node][1].push_back({i, 0});
}
}
long long sx = INT32_MAX;
int it = 0;
pair<int, int> pp;
for(auto i: adj[node]) {
if(i == parent) continue;
if(s - min(dp[i][1], dp[i][0] + 2) + min(dp[i][1] + 2, dp[i][0] + 2) < sx) {
sx = s - min(dp[i][1], dp[i][0] + 2) + min(dp[i][1] + 2, dp[i][0] + 2);
pp = {i, 1};
}
it++;
}
for(auto &i: dpp[node][1]) {
if(i.first == pp.first) {
i.second = 1;
}
}
dp[node][1] = sx;
}
}
void gen_edges(int node, int state, int parent) {
if(state == 0) {
for(auto i: adj[node]) {
if(i == parent) continue;
gen_edges(i, 1, node);
}
} else {
for(auto i: dpp[node][1]) {
if(i.second == 1) {
swap(each[node], each[i.first]);
if(dp[i.first][0] > dp[i.first][1]) {
gen_edges(i.first, 1, node);
} else {
gen_edges(i.first, 0, node);
}
}
}
}
}
void solve_() {
int n; cin >> n;
min_answ = 2 * n;
vector<pair<int, int>> edges;
for(int i = 1; i <= n - 1; i++) {
int a, b; cin >> a >> b;
adj[a].push_back(b);
adj[b].push_back(a);
edges.push_back({a, b});
}
dfs(1, 0);
for(int i = 1; i <= n; i++) {
each[i] = i;
}
gen_edges(1, 1, 0);
for(int i = 1; i <= n; i++) {
pat[each[i]] = i;
}
cout << dp[1][1] << " " << dp[1][1] << '\n';
for(int i = 1; i <= n; i++) {
cout << pat[i] << " ";
}
cout << '\n';
for(int i = 1; i <= n; i++) {
cout << pat[i] << " ";
}
cout << '\n';
}
int main() {
setIO();
auto solve = [&](int test_case)-> void {
while(test_case--) {
solve_();
}
};
int test_cases = 1;
// cin >> test_cases;
solve(test_cases);
return 0;
}
Compilation message
Village.cpp: In function 'void setIO(std::string)':
Village.cpp:64:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
64 | freopen((str + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Village.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
65 | freopen((str + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Partially correct |
8 ms |
14420 KB |
Partially correct |
| 2 |
Incorrect |
9 ms |
14420 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
8 ms |
14420 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Partially correct |
8 ms |
14420 KB |
Partially correct |
| 2 |
Incorrect |
9 ms |
14420 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
