oj.uz

Submission #889851

# Submission time Handle Problem Language Result Execution time Memory
889851 2023-12-20T08:11:33 Z thunopro Bitaro's travel (JOI23_travel) C++14
45 / 100
 272 ms 25940 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 344 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 464 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 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 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 344 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 464 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 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 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 58 ms 10592 KB Output is correct
18 Correct 79 ms 10536 KB Output is correct
19 Correct 57 ms 10536 KB Output is correct
20 Correct 65 ms 10676 KB Output is correct
21 Correct 67 ms 10612 KB Output is correct
22 Correct 73 ms 10404 KB Output is correct
23 Correct 59 ms 10576 KB Output is correct
24 Correct 67 ms 10580 KB Output is correct
25 Correct 70 ms 10620 KB Output is correct
26 Correct 66 ms 10576 KB Output is correct
27 Correct 65 ms 10576 KB Output is correct
28 Correct 67 ms 10616 KB Output is correct
29 Correct 64 ms 10580 KB Output is correct
30 Correct 65 ms 10616 KB Output is correct
31 Correct 63 ms 10520 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 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 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 256 ms 22112 KB Output is correct
8 Correct 262 ms 24656 KB Output is correct
9 Correct 259 ms 24660 KB Output is correct
10 Correct 272 ms 24720 KB Output is correct
11 Correct 254 ms 24556 KB Output is correct
12 Correct 265 ms 24728 KB Output is correct
13 Correct 30 ms 4944 KB Output is correct
14 Correct 25 ms 2384 KB Output is correct
15 Correct 225 ms 25684 KB Output is correct
16 Correct 235 ms 25940 KB Output is correct
17 Correct 226 ms 25816 KB Output is correct
18 Correct 33 ms 4960 KB Output is correct

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 464 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 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 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 58 ms 10592 KB Output is correct
18 Correct 79 ms 10536 KB Output is correct
19 Correct 57 ms 10536 KB Output is correct
20 Correct 65 ms 10676 KB Output is correct
21 Correct 67 ms 10612 KB Output is correct
22 Correct 73 ms 10404 KB Output is correct
23 Correct 59 ms 10576 KB Output is correct
24 Correct 67 ms 10580 KB Output is correct
25 Correct 70 ms 10620 KB Output is correct
26 Correct 66 ms 10576 KB Output is correct
27 Correct 65 ms 10576 KB Output is correct
28 Correct 67 ms 10616 KB Output is correct
29 Correct 64 ms 10580 KB Output is correct
30 Correct 65 ms 10616 KB Output is correct
31 Correct 63 ms 10520 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 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 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 256 ms 22112 KB Output is correct
39 Correct 262 ms 24656 KB Output is correct
40 Correct 259 ms 24660 KB Output is correct
41 Correct 272 ms 24720 KB Output is correct
42 Correct 254 ms 24556 KB Output is correct
43 Correct 265 ms 24728 KB Output is correct
44 Correct 30 ms 4944 KB Output is correct
45 Correct 25 ms 2384 KB Output is correct
46 Correct 225 ms 25684 KB Output is correct
47 Correct 235 ms 25940 KB Output is correct
48 Correct 226 ms 25816 KB Output is correct
49 Correct 33 ms 4960 KB Output is correct
50 Incorrect 30 ms 5676 KB Output isn't correct
51 Halted 0 ms 0 KB -