oj.uz

Submission #933167

# Submission time Handle Problem Language Result Execution time Memory
933167 2024-02-25T07:44:12 Z thunopro Stations (IOI20_stations) C++14
5 / 100
 611 ms 48128 KB 
#include<bits/stdc++.h>
#include "stations.h"
using namespace std ; 
#define maxn 1000009
#define ll long long 
#define pb push_back 
#define fi first 
#define se second 
#define left id<<1
#define right id<<1|1 
#define re exit(0); 
#define _lower(x) lower_bound(v.begin(),v.end(),x)-v.begin()+1
const int mod = 1e9+7 ;
const int INF = 1e9 ; 

typedef vector<int> vi ; 
typedef pair<int,int> pii ; 
typedef vector<pii> vii ; 

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

void rf () 
{
	freopen ("bai1.inp","r",stdin) ;
}

int _pow ( int a , int n ) 
{
	if ( n == 0 ) return 1 ; 
	int res = _pow (a,n/2) ; 
	if ( n % 2 ) return 1ll*res*res%mod*a%mod ; 
	else return 1ll*res*res%mod ; 
}

//vi label ( int N , int K , vi U , vi V ) ; 
//int find_next_station ( int s , int t , int c ) ; 
//
//int main () 
//{
//	ios_base::sync_with_stdio(0); 
//	cin.tie(0);cout.tie(0); 
//	rf () ; 
//	int n , k ; 
//	vi u , v ; 
//	cin >> n >> k ; 
//	for ( int i = 0 ; i < n-1 ; i ++ ) 
//	{
//		int _u , _v ; cin >> _u >> _v ; 
//		u . pb (_u) , v . pb (_v) ; 
//	}
//	vi res = label (n,k,u,v) ; 
//}

vi adjList [maxn] ; 
int n , k ; 

vi label ( int N , int K , vi U , vi V ) 
{
	for ( int i = 0 ; i < n ; i ++ ) adjList [i] . clear () ; 
	n = N , k = K ; 
	for ( int i = 0 ; i < n-1 ; i ++ ) 
	{
		adjList [U[i]] . pb (V[i]) ; 
		adjList [V[i]] . pb (U[i]) ; 
	}
	int root = -1 ; 
	for ( int i = 0 ; i < n ; i ++ ) if ( adjList [i].size () == 1 ) root = i ; 
	vi res(n,-1) ; 
	int num = 0 ; 
	stack <int> q ; 
	q . push (root) ; 
	while ( q.size () ) 
	{
		int u = q.top() ; q.pop() ; res [u] = num ++ ;
		for ( auto v : adjList [u] ) if ( res [v] == -1 ) q . push (v) ; 
	}
	return res ; 
}

int find_next_station ( int s , int t , vi c ) 
{
	int res = -1 ; 
	for ( auto x : c ) 
	{
		if ( s < t ) 
		{
			if ( s <= x && x <= t ) res = max (res,x) ; 
		}
		else if ( s > t ) 
		{
			if ( s >= x && x >= t ) return x ; 
		}
	}
	return res ; 
}

Compilation message

stations.cpp: In function 'void rf()':
stations.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |  freopen ("bai1.inp","r",stdin) ;
      |  ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 344 ms 47872 KB Output is correct
2 Correct 271 ms 47876 KB Output is correct
3 Correct 517 ms 47788 KB Output is correct
4 Correct 483 ms 47788 KB Output is correct
5 Correct 392 ms 47564 KB Output is correct
6 Correct 304 ms 47864 KB Output is correct
7 Correct 309 ms 47788 KB Output is correct
8 Correct 11 ms 47872 KB Output is correct
9 Correct 14 ms 47876 KB Output is correct
10 Correct 12 ms 47876 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 303 ms 47880 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 361 ms 47876 KB Output is correct
2 Correct 279 ms 47880 KB Output is correct
3 Correct 611 ms 47568 KB Output is correct
4 Correct 448 ms 47788 KB Output is correct
5 Correct 407 ms 47788 KB Output is correct
6 Correct 312 ms 47868 KB Output is correct
7 Correct 274 ms 47788 KB Output is correct
8 Correct 15 ms 47872 KB Output is correct
9 Correct 13 ms 47868 KB Output is correct
10 Correct 12 ms 47872 KB Output is correct
11 Incorrect 380 ms 47788 KB Wrong query response.
12 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 528 ms 47944 KB Output is correct
2 Correct 397 ms 47788 KB Output is correct
3 Correct 358 ms 47808 KB Output is correct
4 Correct 13 ms 47872 KB Output is correct
5 Correct 15 ms 47848 KB Output is correct
6 Correct 11 ms 47876 KB Output is correct
7 Incorrect 366 ms 47788 KB Wrong query response.
8 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 328 ms 48096 KB Output is correct
2 Correct 298 ms 47876 KB Output is correct
3 Correct 528 ms 47788 KB Output is correct
4 Correct 379 ms 47788 KB Output is correct
5 Correct 374 ms 47792 KB Output is correct
6 Correct 275 ms 47872 KB Output is correct
7 Correct 244 ms 47788 KB Output is correct
8 Correct 12 ms 47876 KB Output is correct
9 Correct 12 ms 47876 KB Output is correct
10 Correct 11 ms 48128 KB Output is correct
11 Incorrect 305 ms 47880 KB Wrong query response.
12 Halted 0 ms 0 KB -