oj.uz

답안 #889829

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
889829 2023-12-20T07:42:46 Z thunopro Bitaro's travel (JOI23_travel) C++14
0 / 100
 1 ms 480 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 _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 ; 
}

int n , nq  ; 
int a [maxn] ; 
int query [maxn] ; 

void sub1 () 
{
	set <int> S ; 
	for ( int i = 1 ; i <= n ; i ++ ) S.insert(a[i]) ; 
	ll res = 0 ; 
	int pos = query [1] ; 
	while ( true ) 
	{
		int des = 2*INF ; 
		auto it = S.lower_bound(pos) ; 
		if ( it!=S.end() && *it - pos < des - pos ) des = *it ; 
		if ( it!=S.begin() && pos - *(--it) < des - pos ) des = *it ; 	
		res += abs (des-pos) ; 
		pos = des ; 
		S.erase(pos) ; 
		if ( S.empty() ) break ; 
	}
	cout << res ; 
}
int main () 
{
	ios_base::sync_with_stdio(0) ; 
	cin.tie(0) ; cout.tie(0) ; 
//	rf () ; 
	cin >> n ; 
	for ( int i = 1 ; i <= n ; i ++ ) cin >> a [i] ; 
	
	cin >> nq ;
	for ( int i = 1 ; i <= nq ; i ++ ) cin >> query [i] ; 
	
	if ( nq == 1 ) sub1 () ; 
}

Compilation message

travel.cpp: In function 'void rf()':
travel.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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 1 ms 480 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 1 ms 480 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 1 ms 480 KB Output isn't correct
5 Halted 0 ms 0 KB -