oj.uz

Submission #801606

# Submission time Handle Problem Language Result Execution time Memory
801606 2023-08-02T06:52:51 Z vjudge1 Long Mansion (JOI17_long_mansion) C++14
10 / 100
 3000 ms 51336 KB 
#include<iostream>
#include<map>
#include<vector>
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std ;
const int N = (1 << 19), NS = 5e3, NSS = (1 << 17) ;
bool flag, us[NS + 1][NS + 1] ;
int n, q, sm, c[N + 1] ;
vector<int> sg[2 * NSS + 1], sg_b[2 * NSS + 1] ;
vector<int> nul, ks[N + 1] ;
map<int, int> ch, null ;
void bfs(int city)
{
    ch = null ;
    bool abu = 1 ;
    int l = city, r = city ;
    for(int i : ks[city])
        ch[i] = 1 ;
    us[city][city] = 1 ;
    while(abu)
    {
        abu ^= 1 ;
        if(l > 1 && ch[c[l - 1]])
        {
            l-- ;
            for(int i : ks[l])
                ch[i] = 1 ;
            us[city][l] = 1 ;
            abu |= 1 ;
        }
        if(r < n && ch[c[r]])
        {
            abu |= 1 ;
            r++ ;
            for(int i : ks[r])
                ch[i] = 1 ;
            us[city][r] = 1 ;
        }
    }
}
vector<int> mrg(vector<int> a, vector<int> b)
{
    if(!a.size() || !b.size())
    {
        if(a.size())
            return a ;
        else
            return b ;
    }
    int uk1 = 0, uk2 = 0 ;
    vector<int> c ;
    while(c.size() < 20 && (uk1 < a.size() || uk2 < b.size()))
    {
        int mn = 21 ;
        if(uk1 < a.size())
            mn = min(mn, a[uk1]) ;
        if(uk2 < b.size())
            mn = min(mn, b[uk2]) ;
        if(!c.size() || c.back() != mn)
            c.push_back(mn) ;
        if(uk1 < a.size() && a[uk1] == mn)
            uk1++ ;
        else
            uk2++ ;
    }
    return c ;
}
void build()
{
	for(int i = 0 ; i < NSS ; i++)
    {
        sg[i + NSS].push_back(c[i]) ;
        sg_b[i + NSS] = ks[i] ;
    }
	for(int i = NSS - 1 ; i > 0 ; i--)
    {
        sg[i] = mrg(sg[i * 2], sg[i * 2 + 1]) ;
        sg_b[i] = mrg(sg_b[i * 2], sg_b[i * 2 + 1]) ;
    }
}
vector<int> get_all(int l1, int r1)
{
	l1 += NSS ;
	r1 += NSS ;
	vector<int> res ;
	while(l1 <= r1)
    {
		if(l1 % 2 == 1)
            res = mrg(res, sg[l1++]) ;
		if(r1 % 2 == 0)
            res = mrg(res, sg[r1--]) ;
        l1 >>= 1 ;
        r1 >>= 1 ;
	}
	return res ;
}
vector<int> get_all_b(int l1, int r1)
{
	l1 += NSS ;
	r1 += NSS ;
	vector<int> res ;
	while(l1 <= r1)
    {
		if(l1 % 2 == 1)
            res = mrg(res, sg_b[l1++]) ;
		if(r1 % 2 == 0)
            res = mrg(res, sg_b[r1--]) ;
        l1 >>= 1 ;
        r1 >>= 1 ;
	}
	return res ;
}
signed main()
{
    ios_base::sync_with_stdio( 0 ) ;
    cin.tie( 0 ) ;
    cout.tie( 0 ) ;
    cin >> n ;
    for(int i = 1 ; i < n ; i++)
    {
        cin >> c[i] ;
        if(c[i] > 20)flag = 1 ;
    }
    for(int i = 1 ; i <= n ; i++)
    {
        int b ;
        cin >> b ;
        sm += b ;
        for(int j = 1 ; j <= b ; j++)
        {
            int a ;
            cin >> a ;
            if(a > 20)flag = 1 ;
            ks[i].push_back(a) ;
        }
    }
    cin >> q ;
    if(n <= 5000 && sm <= 5000)
    {
        for(int i = 1 ; i <= n ; i++)
            bfs(i) ;
        for(int i = 1 ; i <= q ; i++)
        {
            int x, y ;
            cin >> x >> y ;
            if(us[x][y])
                cout << "YES\n" ;
            else
                cout << "NO\n" ;
        }
        return 0 ;
    }
    if(n <= 100000 && !flag)
    {
        build() ;
        while(q--)
        {
            bool abu[21] = {} ;
            bool fl = 1 ;
            int x, y ;
            cin >> x >> y ;
            int lf = x, rg = x ;
            for(int j : ks[x])
                abu[j] = 1 ;
            while(fl)
            {
                fl ^= 1 ;
                vector<int> vl, vr ;
                int l = 0, r = lf ;
                while(l + 1 < r)
                {
                    bool check = 0 ;
                    int mid = (l + r) >> 1 ;
                    vl = get_all(mid, lf - 1) ;
                    for(int j : vl)
                    {
                        if(!abu[j])check = 1 ;
                    }
                    if(check)
                        l = mid ;
                    else
                        r = mid ;
                }
                if(r < lf)
                {
                    vl = get_all_b(r, lf - 1) ;
                    for(int j : vl)
                        abu[j] = 1 ;
                    lf = r ;
                    fl = 1 ;
                }
                l = rg - 1, r = n ;
                while(l + 1 < r)
                {
                    bool check = 0 ;
                    int mid = (l + r) >> 1 ;
                    vr = get_all(rg, mid) ;
                    for(int j : vr)
                        if(!abu[j])check = 1 ;
                    if(check)
                        r = mid ;
                    else
                        l = mid ;
                }
                if(l >= rg)
                {
                    vr = get_all_b(rg + 1, l + 1) ;
                    for(int j : vr)
                        abu[j] = 1 ;
                    fl = 1 ;
                    rg = l + 1 ;
                }
            }
            if(lf <= y && y <= rg)
                cout << "YES\n" ;
            else
                cout << "NO\n" ;
        }
        return 0 ;
    }
    return 0 ;
}

Compilation message

long_mansion.cpp: In function 'std::vector<int> mrg(std::vector<int>, std::vector<int>)':
long_mansion.cpp:53:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     while(c.size() < 20 && (uk1 < a.size() || uk2 < b.size()))
      |                             ~~~~^~~~~~~~~~
long_mansion.cpp:53:51: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     while(c.size() < 20 && (uk1 < a.size() || uk2 < b.size()))
      |                                               ~~~~^~~~~~~~~~
long_mansion.cpp:56:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |         if(uk1 < a.size())
      |            ~~~~^~~~~~~~~~
long_mansion.cpp:58:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         if(uk2 < b.size())
      |            ~~~~^~~~~~~~~~
long_mansion.cpp:62:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |         if(uk1 < a.size() && a[uk1] == mn)
      |            ~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 33000 KB Output is correct
2 Correct 117 ms 38216 KB Output is correct
3 Correct 219 ms 48368 KB Output is correct
4 Correct 31 ms 33108 KB Output is correct
5 Correct 361 ms 34720 KB Output is correct
6 Correct 135 ms 33624 KB Output is correct
7 Correct 95 ms 33488 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 33000 KB Output is correct
2 Correct 117 ms 38216 KB Output is correct
3 Correct 219 ms 48368 KB Output is correct
4 Correct 31 ms 33108 KB Output is correct
5 Correct 361 ms 34720 KB Output is correct
6 Correct 135 ms 33624 KB Output is correct
7 Correct 95 ms 33488 KB Output is correct
8 Correct 114 ms 34760 KB Output is correct
9 Correct 93 ms 34624 KB Output is correct
10 Correct 216 ms 39864 KB Output is correct
11 Correct 333 ms 50152 KB Output is correct
12 Correct 122 ms 31136 KB Output is correct
13 Correct 87 ms 34808 KB Output is correct
14 Correct 106 ms 34768 KB Output is correct
15 Correct 251 ms 35668 KB Output is correct
16 Correct 418 ms 36716 KB Output is correct
17 Correct 86 ms 34764 KB Output is correct
18 Correct 105 ms 34884 KB Output is correct
19 Correct 141 ms 35084 KB Output is correct
20 Correct 410 ms 36328 KB Output is correct
21 Correct 420 ms 36696 KB Output is correct
22 Correct 379 ms 36180 KB Output is correct
23 Correct 220 ms 35052 KB Output is correct
24 Correct 190 ms 34992 KB Output is correct
25 Correct 158 ms 35068 KB Output is correct
26 Correct 115 ms 34712 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3066 ms 51336 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 33000 KB Output is correct
2 Correct 117 ms 38216 KB Output is correct
3 Correct 219 ms 48368 KB Output is correct
4 Correct 31 ms 33108 KB Output is correct
5 Correct 361 ms 34720 KB Output is correct
6 Correct 135 ms 33624 KB Output is correct
7 Correct 95 ms 33488 KB Output is correct
8 Correct 114 ms 34760 KB Output is correct
9 Correct 93 ms 34624 KB Output is correct
10 Correct 216 ms 39864 KB Output is correct
11 Correct 333 ms 50152 KB Output is correct
12 Correct 122 ms 31136 KB Output is correct
13 Correct 87 ms 34808 KB Output is correct
14 Correct 106 ms 34768 KB Output is correct
15 Correct 251 ms 35668 KB Output is correct
16 Correct 418 ms 36716 KB Output is correct
17 Correct 86 ms 34764 KB Output is correct
18 Correct 105 ms 34884 KB Output is correct
19 Correct 141 ms 35084 KB Output is correct
20 Correct 410 ms 36328 KB Output is correct
21 Correct 420 ms 36696 KB Output is correct
22 Correct 379 ms 36180 KB Output is correct
23 Correct 220 ms 35052 KB Output is correct
24 Correct 190 ms 34992 KB Output is correct
25 Correct 158 ms 35068 KB Output is correct
26 Correct 115 ms 34712 KB Output is correct
27 Execution timed out 3066 ms 51336 KB Time limit exceeded
28 Halted 0 ms 0 KB -