oj.uz

Submission #136905

# Submission time Handle Problem Language Result Execution time Memory
136905 2019-07-26T13:53:15 Z hamzqq9 Unique Cities (JOI19_ho_t5) C++14
4 / 100
 2000 ms 47224 KB 
#include<bits/stdc++.h>
#define st first
#define nd second
#define pb push_back
#define ppb pop_back
#define ii pair<int,int>
#define ll long long
#define umin(x,y) x=min(x,y)
#define umax(x,y) x=max(x,y)
#define orta ((bas+son)>>1)
#define sz(x) ((int)x.size())
#define all(x) x.begin(),x.end()
#define inf 2000000000
#define N 200005
#define MOD 998244353
using namespace std;

int n,m;
int mxd[N][2],der[N];
int ans[N],c[N],deep[N];
multiset<int> s;
int tot_op;
int cntd;
int has[N];
int cnt[N];
vector<int> v[N];

struct diameter_finder {

	int l,r;
	int mx;

	void dfs(int node,int ata,int len) {

		if(len>mx) {

			mx=len;
			l=node;

		}

		for(int i:v[node]) {

			if(i==ata) continue ;

			dfs(i,node,len+1);

		}

	}
 
	void find() {

		mx=0;

		dfs(1,0,0);

		r=l;

		mx=0;

		dfs(r,0,0);

	}

} dia;

void rollback(vector<int>& roll) {

	while(!roll.empty()) {

		int x=roll.back();

		roll.ppb();

		s.insert(x);

		cntd+=(cnt[c[has[x]]]==0);

		cnt[c[has[x]]]++;

	}

}

void add(int node) {

	has[der[node]]=node;

	s.insert(der[node]);

	cntd+=(cnt[c[node]]==0);

	cnt[c[node]]++;

}

void del(vector<int>& roll,int cur) {

	auto pos=s.lower_bound(cur);

	while(pos!=s.end()) {

		++tot_op;

		roll.pb(*pos);

		cnt[c[has[*pos]]]--;

		cntd-=(cnt[c[has[*pos]]]==0);

		s.erase(pos++);

	}

}

void upd(int node,int nd) {

	if(mxd[node][1]<nd) mxd[node][1]=nd;

	if(mxd[node][1]>mxd[node][0]) swap(mxd[node][1],mxd[node][0]);

}

vector<int> temp;

void dfs(int node,int ata) {

//	cerr << "node is : " << node <<'\n';

//	for(auto x:s) cerr << x.st << ' ' << x.nd << '\n';

	vector<int> roll;

//	cerr << "roll upto : " << 2*der[node]-mxd[node][0] << "\n";

	del(roll,2*der[node]-mxd[node][1]);

	add(node);

	for(int i:v[node]) {

		if(i!=deep[node]) continue ;

		dfs(i,node);

	}

	del(roll,2*der[node]-mxd[node][0]);

	roll.ppb();

	add(node);

	for(int i:v[node]) {

		if(i==ata || i==deep[node]) continue ;

		dfs(i,node);

	}

	del(temp,der[node]);

	umax(ans[node],cntd);

	rollback(roll);

}

void dfs1(int node,int ata) {

	der[node]=der[ata]+1;

	mxd[node][0]=mxd[node][1]=der[node];
	deep[node]=node;

	for(int i:v[node]) {

		if(i==ata) continue ;

		dfs1(i,node);

		upd(node,mxd[i][0]);

		if(mxd[node][0]==mxd[i][0]) {

			deep[node]=i;

		}

	}

}

int main() {

	scanf("%d %d",&n,&m);

	for(int i=1;i<n;i++) {

		int x,y;

		scanf("%d %d",&x,&y);

		v[x].pb(y);
		v[y].pb(x);

	}

	for(int i=1;i<=n;i++) scanf("%d",c+i);

	dia.find();

//	cerr << "root is : " << dia.l << '\n';

	dfs1(dia.l,0);
	dfs(dia.l,0);

//	cerr << "root is : " << dia.r << '\n';

	dfs1(dia.r,0);
	dfs(dia.r,0);

	for(int i=1;i<=n;i++) printf("%d\n",ans[i]);

//	cerr << tot_op << '\n';

}

Compilation message

joi2019_ho_t5.cpp: In function 'int main()':
joi2019_ho_t5.cpp:199:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t5.cpp:205:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&x,&y);
   ~~~~~^~~~~~~~~~~~~~~
joi2019_ho_t5.cpp:212:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++) scanf("%d",c+i);
                        ~~~~~^~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 9 ms 5240 KB Output is correct
3 Correct 74 ms 5240 KB Output is correct
4 Correct 65 ms 5240 KB Output is correct
5 Correct 9 ms 5240 KB Output is correct
6 Correct 309 ms 5540 KB Output is correct
7 Correct 76 ms 5240 KB Output is correct
8 Correct 9 ms 5112 KB Output is correct
9 Correct 9 ms 5240 KB Output is correct
10 Correct 10 ms 5240 KB Output is correct
11 Correct 9 ms 5240 KB Output is correct
12 Correct 8 ms 5240 KB Output is correct
13 Correct 273 ms 5496 KB Output is correct
14 Correct 27 ms 5240 KB Output is correct
15 Correct 27 ms 5368 KB Output is correct
16 Correct 8 ms 5240 KB Output is correct
17 Correct 141 ms 5540 KB Output is correct
18 Correct 76 ms 5368 KB Output is correct
19 Correct 9 ms 5240 KB Output is correct
20 Correct 309 ms 5556 KB Output is correct
21 Correct 76 ms 5368 KB Output is correct
22 Correct 9 ms 5240 KB Output is correct
23 Correct 9 ms 5240 KB Output is correct
24 Correct 9 ms 5240 KB Output is correct
25 Correct 10 ms 5240 KB Output is correct
26 Correct 8 ms 5240 KB Output is correct
27 Correct 140 ms 5468 KB Output is correct
28 Correct 111 ms 5496 KB Output is correct
29 Correct 45 ms 5240 KB Output is correct
30 Correct 8 ms 5240 KB Output is correct
31 Correct 143 ms 5516 KB Output is correct
32 Correct 76 ms 5368 KB Output is correct

Subtask #2
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 340 ms 12724 KB Output is correct
2 Execution timed out 2027 ms 29836 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 470 ms 16748 KB Output is correct
2 Execution timed out 2072 ms 47224 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 9 ms 5240 KB Output is correct
3 Correct 74 ms 5240 KB Output is correct
4 Correct 65 ms 5240 KB Output is correct
5 Correct 9 ms 5240 KB Output is correct
6 Correct 309 ms 5540 KB Output is correct
7 Correct 76 ms 5240 KB Output is correct
8 Correct 9 ms 5112 KB Output is correct
9 Correct 9 ms 5240 KB Output is correct
10 Correct 10 ms 5240 KB Output is correct
11 Correct 9 ms 5240 KB Output is correct
12 Correct 8 ms 5240 KB Output is correct
13 Correct 273 ms 5496 KB Output is correct
14 Correct 27 ms 5240 KB Output is correct
15 Correct 27 ms 5368 KB Output is correct
16 Correct 8 ms 5240 KB Output is correct
17 Correct 141 ms 5540 KB Output is correct
18 Correct 76 ms 5368 KB Output is correct
19 Correct 9 ms 5240 KB Output is correct
20 Correct 309 ms 5556 KB Output is correct
21 Correct 76 ms 5368 KB Output is correct
22 Correct 9 ms 5240 KB Output is correct
23 Correct 9 ms 5240 KB Output is correct
24 Correct 9 ms 5240 KB Output is correct
25 Correct 10 ms 5240 KB Output is correct
26 Correct 8 ms 5240 KB Output is correct
27 Correct 140 ms 5468 KB Output is correct
28 Correct 111 ms 5496 KB Output is correct
29 Correct 45 ms 5240 KB Output is correct
30 Correct 8 ms 5240 KB Output is correct
31 Correct 143 ms 5516 KB Output is correct
32 Correct 76 ms 5368 KB Output is correct
33 Correct 340 ms 12724 KB Output is correct
34 Execution timed out 2027 ms 29836 KB Time limit exceeded
35 Halted 0 ms 0 KB -