oj.uz

Submission #889850

# Submission time Handle Problem Language Result Execution time Memory
889850 2023-12-20T08:11:09 Z thunopro Bitaro's travel (JOI23_travel) C++14
15 / 100
 3000 ms 21388 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+1 ; 
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 ; 
}

bool check_sub2 () 
{
	for ( int i = 2 ; i <= n ; i ++ ) if ( a [i] - a [i-1] > 100 ) return false ; 
	return true ; 
}

void sub2 () 
{
	set <int> S ; 
	map <int,int> position ; 
	for ( int i = 1 ; i <= n ; i ++ ) S.insert (a[i]) , position [a[i]] = i ; 
	for ( int run = 1 ; run <= nq ; run ++ ) 
	{
		int x = query [run] , up , down ;  
		auto it = S.lower_bound (x) ; 
		if ( it != S.end () ) up = *it ; else up = INF ; 
		if ( it != S.begin() ) down = *(--it) ; else down = -INF ; 
		
		ll res = 0 ; 
		if ( up == INF || up-x >= x-down ) res += x - down , x = down ; 
		else res += up - x , x = up ; 
		
		int l = position [x] , r = position [x] ; 
		x = l ; 
		if ( x == 1 || x == n ) 
		{
			cout << res + a [n] - a [1] << "\n" ; 
			continue ; 
		}
		
		int TIME = 101 ; 
		while ( TIME ) 
		{
			if ( l == 1 || r == n ) break ; 
			if ( abs (a[l-1]-a[x]) <= abs (a[r+1]-a[x]) ) 
			{
				res += abs (a[l-1]-a[x]) ; 
				x = -- l ; 
			}
			else 
			{
				res += abs (a[r+1]-a[x]) ; 
				x = ++ r ; 
			}
		} 
		
		if ( x == l ) res += abs (a[x]-a[1]) + a [n] - a [1] ; 
		else res += abs (a[x]-a[n]) + a [n] - a [1] ; 
		
		cout << res << "\n" ; 
	}
}
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 () ; 
	else if ( check_sub2 () ) sub2 () ; 
}

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
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 61 ms 10416 KB Output is correct
18 Correct 74 ms 10576 KB Output is correct
19 Correct 59 ms 10380 KB Output is correct
20 Correct 60 ms 10576 KB Output is correct
21 Correct 66 ms 10580 KB Output is correct
22 Correct 72 ms 10580 KB Output is correct
23 Correct 59 ms 10580 KB Output is correct
24 Correct 64 ms 10576 KB Output is correct
25 Correct 67 ms 10424 KB Output is correct
26 Correct 73 ms 10620 KB Output is correct
27 Correct 65 ms 10588 KB Output is correct
28 Correct 67 ms 10580 KB Output is correct
29 Correct 65 ms 10436 KB Output is correct
30 Correct 64 ms 10620 KB Output is correct
31 Correct 63 ms 10576 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Execution timed out 3081 ms 21388 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 61 ms 10416 KB Output is correct
18 Correct 74 ms 10576 KB Output is correct
19 Correct 59 ms 10380 KB Output is correct
20 Correct 60 ms 10576 KB Output is correct
21 Correct 66 ms 10580 KB Output is correct
22 Correct 72 ms 10580 KB Output is correct
23 Correct 59 ms 10580 KB Output is correct
24 Correct 64 ms 10576 KB Output is correct
25 Correct 67 ms 10424 KB Output is correct
26 Correct 73 ms 10620 KB Output is correct
27 Correct 65 ms 10588 KB Output is correct
28 Correct 67 ms 10580 KB Output is correct
29 Correct 65 ms 10436 KB Output is correct
30 Correct 64 ms 10620 KB Output is correct
31 Correct 63 ms 10576 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Execution timed out 3081 ms 21388 KB Time limit exceeded
39 Halted 0 ms 0 KB -