#include <bits/stdc++.h>
using namespace std;
#define VA_NUM_ARGS(...) VA_NUM_ARGS_IMPL_((0,__VA_ARGS__, 6,5,4,3,2,1))
#define VA_NUM_ARGS_IMPL_(tuple) VA_NUM_ARGS_IMPL tuple
#define VA_NUM_ARGS_IMPL(_0,_1,_2,_3,_4,_5,_6,N,...) N
#define macro_dispatcher(macro, ...) macro_dispatcher_(macro, VA_NUM_ARGS(__VA_ARGS__))
#define macro_dispatcher_(macro, nargs) macro_dispatcher__(macro, nargs)
#define macro_dispatcher__(macro, nargs) macro_dispatcher___(macro, nargs)
#define macro_dispatcher___(macro, nargs) macro ## nargs
#define Debug1(a) cout<<#a<<"="<<(a)<<"\n"
#define Debug2(a,b) cout<<#a<<"="<<(a)<<", "<<#b<<"="<<(b)<<"\n"
#define Debug3(a,b,c) cout<<#a<<"="<<(a)<<", "<<#b<<"="<<(b)<<", "<<#c<<"="<<(c)<<"\n"
#define Debug4(a,b,c,d) cout<<#a<<"="<<(a)<<", "<<#b<<"="<<(b)<<", "<<#c<<"="<<(c)<<", "<<#d<<"="<<(d)<<"\n"
#define Debug5(a,b,c,d,e) cout<<#a<<"="<<(a)<<", "<<#b<<"="<<(b)<<", "<<#c<<"="<<(c)<<", "<<#d<<"="<<(d)<<", "<<#e<<"="<<(e)<<"\n"
#define Debug6(a,b,c,d,e,f) cout<<#a<<"="<<(a)<<", "<<#b<<"="<<(b)<<", "<<#c<<"="<<(c)<<", "<<#d<<"="<<(d)<<", "<<#e<<"="<<(e)<<", "<<#f<<"="<<(f)<<"\n"
#define Debug(...) macro_dispatcher(Debug, __VA_ARGS__)(__VA_ARGS__)
#define DA(a,s,n) cout<<#a<<"=["; printarray(a,s,n); cout<<"]\n"
#define TT1 template<class T>
#define TT1T2 template<class T1, class T2>
#define TT1T2T3 template<class T1, class T2, class T3>
template<class T, size_t N> ostream& operator << (ostream& os, const array<T, N>& v);
TT1T2 ostream& operator << (ostream& os, const pair<T1, T2>& p){ return os <<"("<<p.first<<", "<< p.second<<")"; }
TT1 ostream& operator << (ostream& os, const vector<T>& v){ bool f=1;os<<"[";for(auto& i : v) { if (!f)os << ", ";os<<i;f=0;}return os << "]"; }
template<class T, size_t N> ostream& operator << (ostream& os, const array<T, N>& v) { bool f=1;os<<"[";for(auto& i : v) { if (!f)os << ", ";os<<i;f=0;}return os << "]"; }
TT1T2 ostream& operator << (ostream& os, const set<T1, T2>&v){ bool f=1;os<<"[";for(auto& i : v) { if (!f)os << ", ";os<<i;f=0;}return os << "]"; }
TT1T2 ostream& operator << (ostream& os, const multiset<T1,T2>&v){bool f=1;os<<"[";for(auto& i : v) { if (!f)os << ", ";os<<i;f=0;}return os << "]"; }
TT1T2T3 ostream& operator << (ostream& os, const map<T1,T2,T3>& v){ bool f = 1; os << "["; for (auto& ii : v) { if (!f)os << ", "; os << "(" << ii.first << " -> " << ii.second << ") "; f = 0; }return os << "]"; }
TT1T2 ostream& operator << (ostream& os, const multimap<T1, T2>& v){ bool f = 1; os << "["; for (auto& ii : v) { if (!f)os << ", "; os << "(" << ii.first << " -> " << ii.second << ") "; f = 0; }return os << "]"; }
TT1T2 ostream& operator << (ostream& os, priority_queue<T1, T2> v) { bool f = 1; os << "["; while (!v.empty()) { auto x = v.top(); v.pop(); if (!f) os << ", "; f = 0; os << x; } return os << "]"; }
TT1T2 void printarray(const T1& a, T2 l, T2 r){ for (T2 i = l; i<=r; i++) cout << a[i] << (i<r?" ":""); }
void cio(){
ios::sync_with_stdio(false);
cin.tie(NULL);
}
#define tt() printf("%.4f sec\n", (double) clock() / CLOCKS_PER_SEC )
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define Fi first
#define Se second
#define pb(x) push_back(x)
#define sz(x) (int)x.size()
#define rep(i, n) for(int i=0;i<n;i++)
#define repp(i, n) for(int i=1;i<=n;i++)
#define all(x) x.begin(), x.end()
#define geti1(X) cin >> X
#define geti2(X,Y) cin >> X >> Y
#define geti3(X,Y,Z) cin >> X >> Y >> Z
#define geti4(X,Y,Z,W) cin >> X >> Y >> Z >> W
#define GET_MACRO(_1,_2,_3,_4,NAME,...) NAME
#define geti(...) GET_MACRO(__VA_ARGS__, geti4, geti3, geti2, geti1) (__VA_ARGS__)
#define endl '\n'
#include "island.h"
int N, M, K;
int BSize = 0;
vector<int> F;
vector<pii> elist;
int par[600][300500];
int find(int t, int x){
if( par[t][x] == x ) return x;
return par[t][x] = find(t, par[t][x]);
}
vector<pii> v;
void uni(int t, int a, int b) {
a = find(t, a); b = find(t, b);
if( a == b ) return;
par[t][a] = b;
}
int find2(int t, int x) {
if( par[t][x] == x ) return x;
return find(t, par[t][x]);
}
void uni2(int t, int a, int b) {
a = find2(t, a); b = find2(t, b);
if( a == b ) return;
v.push_back({a, par[t][a]});
par[t][a] = b;
}
vector<int> ff[100100];
int BCNT;
void Init(int _K, std::vector<int> _F, std::vector<int> S, std::vector<int> E){
K = _K;
F = _F;
N = F.size(), M = S.size();
BSize = (int) sqrt(M + 1);
for(int i = 0; i< N; i++) ff[F[i]].push_back(i);
rep(i,M) elist.push_back({S[i], E[i]});
reverse(all(elist));
for (int t = 0; t <= BSize; t++) rep(i,N) par[t][i] = i;
int bcnt = 1;
for (int base = 0; base < M; base += BSize, bcnt++) {
for (int i = 0; i < N; i++) {
if( bcnt > 0 ) par[bcnt][i] = par[bcnt-1][i];
}
for (int i = base; i < min(M, base + BSize); i++) {
int a = elist[i].Fi, b = elist[i].Se;
uni(bcnt, a, b);
}
}
BCNT = bcnt;
for (int t = 0; t < BCNT; t++) {
rep(i,N) find(t, i);
}
}
int Separate(int A, int B){
int bcnt = 0;
for (bcnt = 0; bcnt < BCNT; bcnt++) {
// Debug(bcnt, ff[A][0], ff[B][0], find2(bcnt, ff[A][0]), find2(bcnt, ff[B][0]));
if( find2(bcnt, ff[A][0]) == find2(bcnt, ff[B][0]) ){
break;
}
}
bcnt--;
// Debug(A, B, bcnt, BSize);
int ans = 0;
v.clear();
for (int i = bcnt * BSize; i < min(M, (bcnt+1)*BSize); i++) {
int a = elist[i].Fi, b = elist[i].Se;
if( find2(bcnt, a) == find2(bcnt, b) ) continue;
else{
uni2(bcnt, a, b);
}
if( find2(bcnt, ff[A][0]) == find2(bcnt, ff[B][0]) ) {
ans = M - i;
break;
}
}
for(int i = sz(v)-1; i >= 0; i--) {
pii e = v[i];
par[bcnt][e.Fi] = e.Se;
}
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4176 ms |
232536 KB |
Output is correct |
| 2 |
Correct |
4307 ms |
232540 KB |
Output is correct |
| 3 |
Correct |
3435 ms |
232540 KB |
Output is correct |
| 4 |
Correct |
3520 ms |
232540 KB |
Output is correct |
| 5 |
Correct |
3580 ms |
232540 KB |
Output is correct |
| 6 |
Correct |
4109 ms |
232536 KB |
Output is correct |
| 7 |
Correct |
4194 ms |
232540 KB |
Output is correct |
| 8 |
Correct |
3533 ms |
232664 KB |
Output is correct |
| 9 |
Correct |
3599 ms |
232672 KB |
Output is correct |
| 10 |
Correct |
4075 ms |
232536 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
10 ms |
2816 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
10 ms |
2816 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
