oj.uz

Submission #207394

# Submission time Handle Problem Language Result Execution time Memory
207394 2020-03-07T13:14:09 Z Segtree Collapse (JOI18_collapse) C++14
0 / 100
 2430 ms 18920 KB 
#include<iostream>
#include<algorithm>
#include<vector>
#include<queue>
#include<set>
#include<unordered_set>
#include"collapse.h"
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)
#define all(x) x.begin(),x.end()
#define rep(i,n) for(int i=0;i<n;i++)
#define mod 1000000007
#define mad(a,b) a=(a+b)%mod

//namespace solver2{
#define Nmax 100010
#define B 300
typedef struct query{
	ll p,id;
}query;
vector<query> qrys[Nmax];

bool vis[Nmax];
vector<ll> graph[Nmax];
ll cmp[Nmax];
void dfs(ll x,ll cmps){
	if(vis[x])return;
	vis[x]=1;
	if(cmps>=0)cmp[x]=cmps;
	for(auto y:graph[x])dfs(y,cmps);
}

vi simulateCollapse(int N,vi T,vi X,vi Y,vi W,vi P){
	for(int i=0;i<T.size();i++){
		if(X[i]>Y[i])swap(X[i],Y[i]);
		if(X[i]<=P[0]&&P[0]+1<=Y[i])X[i]=Y[i]=0;
	}
	for(int i=0;i<W.size();i++){
		qrys[W[i]].push_back((query){P[i],i});
	}
	vi fans(W.size());
	for(int L=0;L<T.size();L+=B){
		int R=min(L+B,(int)T.size());
		unordered_set<ll> base,s;
		for(int i=0;i<L;i++){
			ll has=X[i]*Nmax+Y[i];
			if(base.count(has))base.erase(has);
			else base.insert(has);
		}
		for(int i=L;i<R;i++){
			ll has=X[i]*Nmax+Y[i];
			if(base.count(has)){
				base.erase(has);
				s.insert(has);
			}
		}
		for(int i=0;i<N;i++){vis[i]=0;graph[i].clear();}
		for(auto e:base){
			ll x=e/Nmax,y=e%Nmax;
			graph[x].push_back(y);
			graph[y].push_back(x);
		}
		ll basecmp=0;
		for(int i=0;i<N;i++)if(vis[i]==0){
			dfs(i,basecmp++);
		}
		for(int i=0;i<N;i++){vis[i]=0;graph[i].clear();}
		
		for(int i=L;i<R;i++){
			ll has=X[i]*Nmax+Y[i];
			if(s.count(has))s.erase(has);
			else s.insert(has);
			unordered_set<ll> conc;
			for(auto e:s){
				ll x=e/Nmax,y=e%Nmax;
				x=cmp[x],y=cmp[y];
				graph[x].push_back(y);
				graph[y].push_back(x);
				conc.insert(x);
				conc.insert(y);
			}
			ll scmp=0;
			for(auto i:conc)if(vis[i]==0){
				dfs(i,-1);
				scmp++;
			}
			for(auto i:conc){vis[i]=0;graph[i].clear();}
			for(query qry:qrys[i]){
				fans[qry.id]=basecmp-conc.size()+scmp;
			}
		}
	}
	return fans;
}

Compilation message

collapse.cpp: In function 'vi simulateCollapse(int, vi, vi, vi, vi, vi)':
collapse.cpp:38:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<T.size();i++){
              ~^~~~~~~~~
collapse.cpp:42:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<W.size();i++){
              ~^~~~~~~~~
collapse.cpp:46:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int L=0;L<T.size();L+=B){
              ~^~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 5368 KB Output is correct
2 Incorrect 9 ms 5240 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 8916 KB Output is correct
2 Correct 39 ms 8988 KB Output is correct
3 Correct 1332 ms 12536 KB Output is correct
4 Correct 39 ms 9464 KB Output is correct
5 Correct 1599 ms 12792 KB Output is correct
6 Correct 66 ms 9976 KB Output is correct
7 Correct 2430 ms 16248 KB Output is correct
8 Correct 2345 ms 13328 KB Output is correct
9 Runtime error 42 ms 18920 KB Execution killed with signal 11 (could be triggered by violating memory limits)
10 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 8812 KB Output is correct
2 Incorrect 40 ms 8680 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 5368 KB Output is correct
2 Incorrect 9 ms 5240 KB Output isn't correct
3 Halted 0 ms 0 KB -