Submission #476945

#	Time	Username	Problem	Language	Result	Execution time	Memory
476945		AdamGS	Teoretičar (COCI18_teoreticar)	C++14	0 / 130	4670 ms	158372 KiB

teoreticar

#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
#define int long long
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=5e5+7;
vector<pair<int,int>>V[LIM];
vector<int>cykl;
pair<int,int>T[LIM];
int ans[LIM], li[LIM], odw[LIM], ile[LIM], l, r, m;
bool ok(vector<int>kraw) {
	if(kraw.size()==0) return true;
	vector<int>wierz;
	for(auto i : kraw) {
		wierz.pb(T[i].st);
		wierz.pb(T[i].nd);
	}
	sort(all(wierz));
	rep(i, wierz.size()-1) if(wierz[i]==wierz[i+1]) return false;
	return true;
}
void DFS(int x) {
	while(li[x]<V[x].size()) {
		if(odw[V[x][li[x]].nd]) {
			++li[x];
			continue;
		}
		odw[V[x][li[x]].nd]=1;
		++li[x];
		cykl.pb(V[x][li[x]-1].nd);
		DFS(V[x][li[x]-1].st);		
	}
}
void dc(vector<int>kraw, int x) {
	if(ok(kraw)) return;
	vector<int>P, wierz, lewo, prawo;
	for(auto i : kraw) {
		V[T[i].st].clear();
		V[T[i].nd].clear();
		li[T[i].st]=ile[T[i].st]=0;
		li[T[i].nd]=ile[T[i].nd]=0;
		odw[i]=0;
		P.pb(T[i].st);
		P.pb(T[i].nd);
	}
	for(auto i : kraw) {
		V[T[i].st].pb({T[i].nd, i});
		V[T[i].nd].pb({T[i].st, i});
		++ile[T[i].st];
		++ile[T[i].nd];
	}
	sort(all(P));
	wierz.pb(P[0]);
	rep(i, P.size()-1) if(P[i]!=P[i+1]) wierz.pb(P[i+1]);
	for(auto i : wierz) if(ile[i]%2==1) {
		if(i<l) lewo.pb(i);
		else prawo.pb(i);
	}
	rep(i, lewo.size()) {
		V[lewo[i]].pb({prawo[i], m});
		V[prawo[i]].pb({lewo[i], m});
	}
	vector<int>V1, V2;
	for(auto i : wierz) {
		cykl.clear();
		DFS(i);
		rep(j, cykl.size()) if(cykl[j]!=m) {
			if(j%2==0) V1.pb(cykl[j]);
			else V2.pb(cykl[j]);
		}
	}
	for(auto i : V1) ans[i]+=x;
	dc(V1, 2*x);
	dc(V2, 2*x);
}
int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin >> l >> r >> m;
	vector<int>kraw;
	rep(i, m) {
		cin >> T[i].st >> T[i].nd;
		--T[i].st; --T[i].nd;
		T[i].nd+=l;
		kraw.pb(i);
	}
	dc(kraw, 1);
	int ma=0;
	rep(i, m) ma=max(ma, ans[i]);
	cout << ma+1 << '\n';
	rep(i, m) cout << ans[i]+1 << '\n';
}

Compilation message (stderr)

teoreticar.cpp: In function 'bool ok(std::vector<long long int>)':
teoreticar.cpp:5:36: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
teoreticar.cpp:23:2: note: in expansion of macro 'rep'
   23 |  rep(i, wierz.size()-1) if(wierz[i]==wierz[i+1]) return false;
      |  ^~~
teoreticar.cpp: In function 'void DFS(long long int)':
teoreticar.cpp:27:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  while(li[x]<V[x].size()) {
      |        ~~~~~^~~~~~~~~~~~
teoreticar.cpp: In function 'void dc(std::vector<long long int>, long long int)':
teoreticar.cpp:5:36: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
teoreticar.cpp:58:2: note: in expansion of macro 'rep'
   58 |  rep(i, P.size()-1) if(P[i]!=P[i+1]) wierz.pb(P[i+1]);
      |  ^~~
teoreticar.cpp:5:36: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
teoreticar.cpp:63:2: note: in expansion of macro 'rep'
   63 |  rep(i, lewo.size()) {
      |  ^~~
teoreticar.cpp:5:36: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
teoreticar.cpp:71:3: note: in expansion of macro 'rep'
   71 |   rep(j, cykl.size()) if(cykl[j]!=m) {
      |   ^~~

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