oj.uz

Submission #889171

# Submission time Handle Problem Language Result Execution time Memory
889171 2023-12-19T05:08:52 Z thunopro Tourism (JOI23_tourism) C++14
25 / 100
 5000 ms 44368 KB 
#include<bits/stdc++.h>
using namespace std ;
#define maxn 200009 
#define ll long long
#define fi first 
#define se second 
#define pb push_back 
#define left id<<1
#define right id<<1|1 
#define re exit(0); 

const int mod = 1e9+7 ; 
const int INF = 1e9 ; 
const int LOG = 18 ; 

typedef vector<int> vi ; 
typedef vector<ll> vl ; 
typedef pair<int,int> pii ; 
typedef vector<pii> vii ; 
typedef pair<ll,ll> pll ;  

void add ( int &a , int b ) 
{
	a += b ; 
	if ( a < 0 ) a += mod ; 
	if ( a >= mod ) a -= mod ; 
}

template < typename T > void chkmin (T &a , T b) { if (a>b) a=b ;} 
template < typename T > void chkmax (T &a , T b) { if (a<b) a=b ;}

void rf () 
{
	freopen ("bai1.inp","r",stdin) ; 
//	freopen ("bai1.out","w",stdout) ; 
}

int n , m , nq ; 
vi adjList [maxn] ;
 
int seeing [maxn] ; 
pii query [maxn] ; 

int par [maxn][20] , dep [maxn] , tin [maxn] , timeDfs ; 
void dfs ( int u = 1 )
{
	tin [u] = ++ timeDfs ; 
	for ( auto v : adjList [u] ) 
	{
		if ( v == par [u][0] ) continue ; 
		par [v][0] = u , dep [v] = dep [u] + 1 ; 
		for ( int i = 1 ; i <= LOG ; i ++ ) par [v][i] = par[par[v][i-1]][i-1] ; 
		dfs (v) ; 
	}
}

int lca ( int u , int v ) 
{
	if ( dep [u] < dep [v] ) swap (u,v) ; 
	int h = dep [u] - dep [v] ; 
	for ( int i = LOG ; i >= 0 ; i -- ) if ( h >> i & 1 ) u = par [u][i] ;
	if ( u == v ) return u ; 
	for ( int i = LOG ; i >= 0 ; i -- ) if ( par [u][i] != par [v][i] ) u = par [u][i] , v = par [v][i] ; 
	return par [u][0] ; 
} 

int dis ( int u , int v ) 
{
	return dep [u] + dep [v] - 2*dep[lca(u,v)] ; 
}

bool cmp ( int u , int v ) 
{
	return tin [u] < tin [v] ; 
}
void sub1 () 
{
	for ( int run = 1 ; run <= nq ; run ++ )
	{
		int l = query [run].fi , r = query [run].se ; 
		vi v ; 
		for ( int i = l ; i <= r ; i ++ ) v . pb (seeing[i]) ;
		sort (v.begin(),v.end(),cmp) ; 
		int last = 0 ; 
		int res = 0 ; 
		for ( auto x : v ) 
		{
			if ( last ) res += dis (last,x) ;
			last = x ; 
		}
		res += dis (last,v[0]) ; 
		cout << res / 2 + 1 << "\n" ; 
	}
}	


bool check_isline () 
{
	for ( int i = 1 ; i <= n ; i ++ ) if ( (int)adjList[i].size () > 2 ) return false ; 
//	if ( (int)adjList [1].size () != 1 || (int)adjList[n].size () != 1 ) return false ; 
	return true ; 
}

int L [maxn][20][2] ; 
int get_max ( int l , int r ) 
{
	int x = __lg(r-l+1) ; 
	return max (L[l][x][1],L[r-(1<<x)+1][x][1]) ; 
}
int get_min ( int l , int r ) 
{
	int x = __lg(r-l+1) ; 
	return min (L[l][x][0],L[r-(1<<x)+1][x][0]) ; 
}

void sub2 () 
{
	for ( int i = 1 ; i <= m ; i ++ ) L [i][0][0] = L [i][0][1] = seeing [i] ; 
	for ( int j = 1 ; j <= __lg (m) ; j ++ ) 
	{
		for ( int i = 1 ; i <= m-(1<<j)+1 ; i ++ ) 
		{
			L [i][j][0] = min ( L[i][j-1][0],L[i+(1<<(j-1))][j-1][0]) ; 
			L [i][j][1] = max ( L[i][j-1][1],L[i+(1<<(j-1))][j-1][1]) ; 
		}
	}
	for ( int run = 1 ; run <= nq ; run ++ ) 
	{
		int l = query [run].fi , r = query [run].se ; 
		cout << get_max (l,r) - get_min (l,r) + 1 << "\n" ; 
	}
}
int main () 
{
	ios_base::sync_with_stdio(0) ; 
	cin.tie(0) ; cout.tie(0) ; 
//	rf () ; 
	cin >> n >> m >> nq ; 
	
	for ( int i = 1 ; i < n ; i ++ ) 
	{
		int u , v ; cin >> u >> v ; 
		adjList [u] . pb (v) ; 
		adjList [v] . pb (u) ; 
	}
	
	for ( int i = 1 ; i <= m ; i ++ ) cin >> seeing [i] ; 
	
	for ( int i = 1 ; i <= nq ; i ++ ) cin >> query [i].fi >> query [i].se ; 
	dfs () ; 
	
	if ( check_isline () ) sub2 () ; 
	else sub1 () ; 
}

Compilation message

tourism.cpp: In function 'void rf()':
tourism.cpp:34:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |  freopen ("bai1.inp","r",stdin) ;
      |  ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 3 ms 8540 KB Output is correct
5 Correct 3 ms 8540 KB Output is correct
6 Correct 3 ms 8540 KB Output is correct
7 Correct 3 ms 8540 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 4 ms 8540 KB Output is correct
10 Correct 4 ms 8540 KB Output is correct
11 Correct 4 ms 8540 KB Output is correct
12 Correct 9 ms 8720 KB Output is correct
13 Correct 9 ms 8540 KB Output is correct
14 Correct 9 ms 8540 KB Output is correct
15 Incorrect 2 ms 8540 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 3 ms 8540 KB Output is correct
5 Correct 3 ms 8540 KB Output is correct
6 Correct 3 ms 8540 KB Output is correct
7 Correct 3 ms 8540 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 4 ms 8540 KB Output is correct
10 Correct 4 ms 8540 KB Output is correct
11 Correct 4 ms 8540 KB Output is correct
12 Correct 9 ms 8720 KB Output is correct
13 Correct 9 ms 8540 KB Output is correct
14 Correct 9 ms 8540 KB Output is correct
15 Incorrect 2 ms 8540 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 43 ms 35488 KB Output is correct
5 Correct 44 ms 35920 KB Output is correct
6 Correct 48 ms 41040 KB Output is correct
7 Correct 63 ms 44368 KB Output is correct
8 Correct 61 ms 44268 KB Output is correct
9 Correct 61 ms 44164 KB Output is correct
10 Correct 62 ms 44368 KB Output is correct
11 Correct 61 ms 44112 KB Output is correct
12 Correct 61 ms 44112 KB Output is correct
13 Correct 59 ms 44280 KB Output is correct
14 Correct 59 ms 44116 KB Output is correct
15 Correct 45 ms 27220 KB Output is correct
16 Correct 61 ms 43856 KB Output is correct
17 Correct 30 ms 25300 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 33 ms 17092 KB Output is correct
3 Correct 41 ms 17244 KB Output is correct
4 Correct 41 ms 17692 KB Output is correct
5 Correct 60 ms 21460 KB Output is correct
6 Correct 61 ms 21292 KB Output is correct
7 Correct 78 ms 21072 KB Output is correct
8 Correct 60 ms 20944 KB Output is correct
9 Correct 66 ms 21036 KB Output is correct
10 Correct 60 ms 20820 KB Output is correct
11 Correct 62 ms 20844 KB Output is correct
12 Correct 60 ms 20984 KB Output is correct
13 Correct 62 ms 20824 KB Output is correct
14 Correct 63 ms 21076 KB Output is correct
15 Correct 65 ms 21036 KB Output is correct
16 Correct 61 ms 21376 KB Output is correct
17 Correct 60 ms 21340 KB Output is correct
18 Correct 62 ms 21328 KB Output is correct
19 Correct 59 ms 21456 KB Output is correct
20 Correct 56 ms 21340 KB Output is correct
21 Correct 57 ms 21172 KB Output is correct
22 Correct 61 ms 21084 KB Output is correct
23 Correct 57 ms 21076 KB Output is correct
24 Correct 59 ms 20828 KB Output is correct
25 Correct 62 ms 21024 KB Output is correct
26 Correct 62 ms 21060 KB Output is correct
27 Correct 64 ms 21040 KB Output is correct
28 Correct 69 ms 21012 KB Output is correct
29 Correct 65 ms 21024 KB Output is correct
30 Correct 65 ms 20952 KB Output is correct
31 Correct 67 ms 21072 KB Output is correct
32 Correct 70 ms 21076 KB Output is correct
33 Correct 89 ms 21336 KB Output is correct
34 Correct 66 ms 21076 KB Output is correct

Subtask #5
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 2 ms 8540 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Execution timed out 5032 ms 18060 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #6
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 3 ms 8540 KB Output is correct
5 Correct 3 ms 8540 KB Output is correct
6 Correct 3 ms 8540 KB Output is correct
7 Correct 3 ms 8540 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 4 ms 8540 KB Output is correct
10 Correct 4 ms 8540 KB Output is correct
11 Correct 4 ms 8540 KB Output is correct
12 Correct 9 ms 8720 KB Output is correct
13 Correct 9 ms 8540 KB Output is correct
14 Correct 9 ms 8540 KB Output is correct
15 Incorrect 2 ms 8540 KB Output isn't correct
16 Halted 0 ms 0 KB -