// Cao Quang Hung
#include <cassert>
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cwchar>
#include <cwctype>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
using namespace std;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define pii pair<int,int>
#define pll pair<long long , long long>
#define vi vector<int>
#define vpii vector<pii>
#define SZ(x) ((int)(x.size()))
#define fi first
#define se second
#define IN(x,y) ((y).find((x))!=(y).end())
#define ALL(t) t.begin(),t.end()
#define FOREACH(i,t) for (typeof(t.begin()) i=t.begin(); i!=t.end(); i++)
#define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
#define REPD(i,a,b) for(int (i)=(a); (i)>=(b);--i)
#define FOR(i, n) for (int (i) = 0; (i) < (n); ++(i))
#define dem(x) __builtin_popcount(x)
#define Mask(x) (1LL << (x))
#define BIT(x, i) ((x) >> (i) & 1)
#define ln '\n'
#define io_faster ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
///mt19937 rnd(time(0));
const int INF = 1e9 , mod = 1e9 + 7;
template <class T1, class T2>
inline T1 mul(T1& x, const T2 &k){ return x = (1LL * x * k) % mod; }
template <class T1 , class T2>
inline T1 pw(T1 x, T2 k){T1 res = 1; for (; k ; k >>= 1){ if (k & 1) mul(res, x); mul(x, x); } return res;}
template <class T>
inline bool minimize(T &x, const T &y){ if (x > y){x = y; return 1;} return 0; }
template <class T>
inline bool maximize(T &x, const T &y){ if (x < y){x = y; return 1;} return 0; }
template <class T>
inline void add(T &x , const T &y){ if ((x += y) >= mod) x -= mod; }
template <class T>
inline T product (const T &x , const T &y) { return 1LL * x * y % mod; }
#define PROB "a"
void file(){
if(fopen(PROB".inp", "r")){
freopen(PROB".inp","r",stdin);
freopen(PROB".out","w",stdout);
}
}
void sinh_(){
// srand(time(0));
// freopen(PROB".inp" , "w" , stdout);
// int n;
}
typedef long long ll;
typedef double db;
const int N = 3e5 + 5;
int n, m, mst[N];
int depth[N], idx[N], par[N];
int deg[N], ans[N];
int sz[N], mx[N], idHld[N];
int base[N], depthHld[N], head[N];
bool on_mst[N], vis[N];
pii edge[N];
vi adj[N], g[N];
int other(int x, int id) {
return x ^ edge[id].first ^ edge[id].second;
}
void readip(){
cin >> n >> m;
REP(i, 1, m) cin >> edge[i].fi >> edge[i].se;
REP(i, 1, n - 1) {
cin >> mst[i];
on_mst[mst[i]] = true;
int u = edge[mst[i]].first;
int v = edge[mst[i]].second;
adj[u].eb(mst[i]);
adj[v].eb(mst[i]);
}
}
void dfs_mst(int u, int p) {
sz[u] = 1;
mx[u] = -1;
for (int &id : adj[u]) {
int v = other(u, id);
if (v == p) continue;
par[v] = u;
depth[v] = depth[u] + 1;
idx[v] = id;
dfs_mst(v, u);
sz[u] += sz[v];
if (mx[u] == -1 || sz[mx[u]] < sz[v])
mx[u] = v;
}
}
namespace sub12356{
bool check() {
if (n == m) return true;
if (n <= 1000 && m <= 1000) return true;
REP(i, 1, n - 1) {
int u = edge[mst[i]].first;
int v = edge[mst[i]].second;
if (u == 1 || v == 1) continue;
return false;
}
return true;
}
void prepare() {
REP(i, 1, m) if (!on_mst[i]) {
int u = edge[i].first;
int v = edge[i].second;
if (depth[u] > depth[v]) swap(u, v);
while(depth[v] > depth[u]) {
int ID = idx[v];
g[i].eb(ID);
++deg[i];
v = par[v];
}
while(u != v) {
int ID = idx[u];
g[i].eb(ID);
++deg[i];
ID = idx[v];
g[i].eb(ID);
++deg[i];
u = par[u];
v = par[v];
}
}
}
void solve() {
prepare();
int cnt = 0;
REP(i, 1, m) if (!vis[i]) {
vector<int> v;
for (int x : g[i]) if (!vis[x]) v.eb(x);
sort(ALL(v));
for (int u : v) {
vis[u] = true;
ans[u] = ++cnt;
}
vis[i] = true;
ans[i] = ++cnt;
}
REP(i, 1, m) cout << ans[i] << ' ';
}
};
namespace sub_full {
set<int> s;
int timeHld = 0;
int cnt = 0;
void hld(int u, int p) {
idHld[u] = ++timeHld;
base[timeHld] = u;
if (mx[u] == -1) return;
depthHld[mx[u]] = depthHld[u];
head[mx[u]] = head[u];
hld(mx[u], u);
for (int &id : adj[u]) {
int v = other(u, id);
if (v == mx[u] || v == p) continue;
depthHld[v] = depthHld[u] + 1;
head[v] = v;
hld(v, u);
}
}
vector<int> curEdge;
void path(int u, int v) {
while(head[u] != head[v]) {
if (depthHld[u] > depthHld[v]) swap(u, v);
int l = idHld[head[v]], r = idHld[v];
if (s.empty()) return;
auto it = s.lower_bound(l);
while(it != s.end() && *it <= r) {
int pos = *it;
int hihi = idx[base[pos]];
curEdge.eb(hihi);
it = s.erase(it);
}
v = par[head[v]];
}
if (idHld[u] > idHld[v]) swap(u, v);
int l = idHld[u] + 1, r = idHld[v];
if (s.empty()) return;
auto it = s.lower_bound(l);
while(it != s.end() && *it <= r) {
int pos = *it;
int hihi = idx[base[pos]];
if (!vis[hihi]) curEdge.eb(hihi);
it = s.erase(it);
}
}
void solve() {
head[1] = 1;
depthHld[1] = 1;
REP(i, 2, n) s.insert(i);
hld(1, -1);
REP(i, 1, m) if (!vis[i]) {
if (on_mst[i]) {
vis[i] = true;
ans[i] = ++cnt;
continue;
}
int u = edge[i].fi, v = edge[i].se;
curEdge.clear();
path(u, v);
sort(ALL(curEdge));
for (int x : curEdge) {
vis[x] = true;
ans[x] = ++cnt;
}
vis[i] = true;
ans[i] = ++cnt;
}
REP(i, 1, m) cout << ans[i] << ' ';
}
};
void solve(){
dfs_mst(1, -1);
// if (sub12356::check()) {
// sub12356::solve();
// return;
// }
sub_full::solve();
}
int main(){
sinh_();
io_faster
file();
int t = 1;
// cin >> t;
while (t--){
readip();
solve();
}
}
Compilation message
riggedroads.cpp: In function 'void readip()':
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:156:5: note: in expansion of macro 'REP'
156 | REP(i, 1, m) cin >> edge[i].fi >> edge[i].se;
| ^~~
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:157:5: note: in expansion of macro 'REP'
157 | REP(i, 1, n - 1) {
| ^~~
riggedroads.cpp: In function 'bool sub12356::check()':
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:190:9: note: in expansion of macro 'REP'
190 | REP(i, 1, n - 1) {
| ^~~
riggedroads.cpp: In function 'void sub12356::prepare()':
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:201:9: note: in expansion of macro 'REP'
201 | REP(i, 1, m) if (!on_mst[i]) {
| ^~~
riggedroads.cpp: In function 'void sub12356::solve()':
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:231:9: note: in expansion of macro 'REP'
231 | REP(i, 1, m) if (!vis[i]) {
| ^~~
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:243:9: note: in expansion of macro 'REP'
243 | REP(i, 1, m) cout << ans[i] << ' ';
| ^~~
riggedroads.cpp: In function 'void sub_full::solve()':
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:300:9: note: in expansion of macro 'REP'
300 | REP(i, 2, n) s.insert(i);
| ^~~
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:302:9: note: in expansion of macro 'REP'
302 | REP(i, 1, m) if (!vis[i]) {
| ^~~
riggedroads.cpp:92:28: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
92 | #define REP(i,a,b) for(int (i)=(a);(i)<=(b);++i)
| ^
riggedroads.cpp:320:9: note: in expansion of macro 'REP'
320 | REP(i, 1, m) cout << ans[i] << ' ';
| ^~~
riggedroads.cpp: In function 'void file()':
riggedroads.cpp:125:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
125 | freopen(PROB".inp","r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
riggedroads.cpp:126:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
126 | freopen(PROB".out","w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
27228 KB |
Output is correct |
| 2 |
Correct |
5 ms |
27228 KB |
Output is correct |
| 3 |
Incorrect |
5 ms |
27224 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
27228 KB |
Output is correct |
| 2 |
Correct |
5 ms |
27228 KB |
Output is correct |
| 3 |
Incorrect |
5 ms |
27224 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
52 ms |
38376 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
82 ms |
46992 KB |
Output is correct |
| 2 |
Correct |
45 ms |
35784 KB |
Output is correct |
| 3 |
Correct |
25 ms |
32604 KB |
Output is correct |
| 4 |
Correct |
60 ms |
42232 KB |
Output is correct |
| 5 |
Correct |
25 ms |
32860 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
198 ms |
62548 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
151 ms |
54212 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
27228 KB |
Output is correct |
| 2 |
Correct |
5 ms |
27228 KB |
Output is correct |
| 3 |
Incorrect |
5 ms |
27224 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
