Submission #47104

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
47104	2018-04-27T15:32:24 Z	SpaimaCarpatilor	Long Mansion (JOI17_long_mansion)	C++17	100 / 100	742 ms	262144 KB

long_mansion

#include<bits/stdc++.h>

using namespace std;

const int NMAX = 500009;
int N, last[NMAX], lft[NMAX], rgt[NMAX], C[NMAX], minL[NMAX], maxR[NMAX];
vector < int > v[NMAX];

void read ()
{
    scanf ("%d", &N);
    for (int i=1; i<N; i++)
        scanf ("%d", &C[i]);
    for (int i=1; i<=N; i++)
    {
        int l, x;
        scanf ("%d", &l);
        while (l --)
            scanf ("%d", &x),
            v[i].push_back (x),
            last[x] = i;
        if (i < N)
            lft[i] = last[C[i]];
    }
    for (int i=1; i<=N; i++)
        last[i] = 0;
    for (int i=N; i>=2; i--)
    {
        for (auto it : v[i])
            last[it] = i;
        if (last[C[i - 1]] == 0) rgt[i - 1] = N + 1;
        else rgt[i - 1] = last[C[i - 1]];
    }
}

namespace segtree {
    int ma[4 * NMAX], aintVal[NMAX];

    void build (int nod, int st, int dr)
    {
        if (st == dr)
        {
            ma[nod] = aintVal[st];
            return ;
        }
        int mij = (st + dr) >> 1, f1 = nod << 1, f2 = f1 | 1;
        build (f1, st, mij);
        build (f2, mij + 1, dr);
        ma[nod] = max (ma[f1], ma[f2]);
    }

    int firstBigger (int nod, int st, int dr, int x, int y, int minVal)
    {
        if (x > y) return -1;
        int mij = (st + dr) >> 1, f1 = nod << 1, f2 = f1 | 1;
        if (x <= st && dr <= y)
        {
            if (ma[nod] <= minVal) return -1;
            if (st == dr) return st;
            if (ma[f1] > minVal) return firstBigger (f1, st, mij, x, y, minVal);
            return firstBigger (f2, mij + 1, dr, x, y, minVal);
        }
        if (x <= mij)
        {
            int curr = firstBigger (f1, st, mij, x, y, minVal);
            if (curr != -1) return curr;
        }
        if (mij < y)
            return firstBigger (f2, mij + 1, dr, x, y, minVal);
        return -1;
    }
};

void buildMinL ()
{
    for (int i=1; i<=N; i++)
        segtree::aintVal[i] = (i == 1 ? N + 1 : rgt[i - 1]);
    segtree::build (1, 1, N);
    for (int i=1; i<=N; i++)
    {
        minL[i] = segtree::firstBigger (1, 1, N, lft[i] + 1, i, i);
        if (minL[i] == -1)
            minL[i] = N + 1;
    }
}

void buildMaxR ()
{
    for (int i=1; i<=N; i++)
        segtree::aintVal[i] = -(i == N ? 0 : lft[i]);
    reverse (segtree::aintVal + 1, segtree::aintVal + N + 1);
    segtree::build (1, 1, N);
    for (int i=1; i<=N; i++)
    {
        int lEnd = i, rEnd = rgt[i - 1] - 1;
        maxR[i] = segtree::firstBigger (1, 1, N, N + 1 - rEnd, N + 1 - lEnd, -i);
        if (maxR[i] == -1) maxR[i] = 0;
        else maxR[i] = N + 1 - maxR[i];
    }
}

namespace RMQ {
    int mi[19][NMAX], ma[19][NMAX], lg[NMAX];
    void buildRmq ()
    {
        for (int i=1; i<=N; i++)
        {
            lg[i] = lg[i - 1];
            if ((2 << lg[i]) <= i) lg[i] ++;
        }
        for (int i=1; i<=N; i++)
            mi[0][i] = minL[i],
            ma[0][i] = maxR[i];
        for (int i=1; i<=lg[N]; i++)
            for (int j=1; j + (1 << i) - 1 <= N; j++)
                mi[i][j] = min (mi[i - 1][j], mi[i - 1][j + (1 << (i - 1))]),
                ma[i][j] = max (ma[i - 1][j], ma[i - 1][j + (1 << (i - 1))]);
    }

    int getMin (int l, int r)
    {
        int p = lg[r - l + 1];
        return min (mi[p][l], mi[p][r - (1 << p) + 1]);
    }

    int getMax (int l, int r)
    {
        int p = lg[r - l + 1];
        return max (ma[p][l], ma[p][r - (1 << p) + 1]);
    }
};

void processQueries ()
{
    int Q;
    scanf ("%d", &Q);
    while (Q --)
    {
        int x, y;
        scanf ("%d %d", &x, &y);
        bool ans = 1;
        if (x < y && RMQ::getMin (x, y - 1) <= x) ans = 0;
        else
        if (y < x && RMQ::getMax (y + 1, x) >= x) ans = 0;
        if (ans) printf ("YES\n");
        else printf ("NO\n");
    }
}

int main ()
{
//freopen ("input", "r", stdin);
//freopen ("output", "w", stdout);

read ();
buildMinL ();
buildMaxR ();
RMQ::buildRmq ();
processQueries ();

return 0;
}

Compilation message

long_mansion.cpp: In function 'void read()':
long_mansion.cpp:11:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%d", &N);
     ~~~~~~^~~~~~~~~~
long_mansion.cpp:13:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf ("%d", &C[i]);
         ~~~~~~^~~~~~~~~~~~~
long_mansion.cpp:17:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf ("%d", &l);
         ~~~~~~^~~~~~~~~~
long_mansion.cpp:20:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf ("%d", &x),
             ~~~~~~~~~~~~~~~~~~ 
             v[i].push_back (x),
             ~~~~~~~~~~~~~~~~~~^~
             last[x] = i;
             ~~~~~~~~~~~        
long_mansion.cpp: In function 'void processQueries()':
long_mansion.cpp:136:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%d", &Q);
     ~~~~~~^~~~~~~~~~
long_mansion.cpp:140:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf ("%d %d", &x, &y);
         ~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	14 ms	12536 KB	Output is correct
2	Correct	15 ms	12772 KB	Output is correct
3	Correct	16 ms	13336 KB	Output is correct
4	Correct	15 ms	13336 KB	Output is correct
5	Correct	15 ms	13336 KB	Output is correct
6	Correct	14 ms	13336 KB	Output is correct
7	Correct	14 ms	13336 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	14 ms	12536 KB	Output is correct
2	Correct	15 ms	12772 KB	Output is correct
3	Correct	16 ms	13336 KB	Output is correct
4	Correct	15 ms	13336 KB	Output is correct
5	Correct	15 ms	13336 KB	Output is correct
6	Correct	14 ms	13336 KB	Output is correct
7	Correct	14 ms	13336 KB	Output is correct
8	Correct	167 ms	14292 KB	Output is correct
9	Correct	167 ms	14300 KB	Output is correct
10	Correct	185 ms	14708 KB	Output is correct
11	Correct	176 ms	15072 KB	Output is correct
12	Correct	169 ms	15072 KB	Output is correct
13	Correct	166 ms	15072 KB	Output is correct
14	Correct	178 ms	15072 KB	Output is correct
15	Correct	264 ms	15072 KB	Output is correct
16	Correct	150 ms	15072 KB	Output is correct
17	Correct	164 ms	15072 KB	Output is correct
18	Correct	167 ms	15072 KB	Output is correct
19	Correct	177 ms	15072 KB	Output is correct
20	Correct	157 ms	15072 KB	Output is correct
21	Correct	150 ms	15072 KB	Output is correct
22	Correct	167 ms	15072 KB	Output is correct
23	Correct	157 ms	15072 KB	Output is correct
24	Correct	157 ms	15072 KB	Output is correct
25	Correct	160 ms	15072 KB	Output is correct
26	Correct	160 ms	15072 KB	Output is correct

Subtask #3
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	387 ms	41520 KB	Output is correct
2	Correct	387 ms	48884 KB	Output is correct
3	Correct	366 ms	55676 KB	Output is correct
4	Correct	382 ms	63076 KB	Output is correct
5	Correct	371 ms	70420 KB	Output is correct
6	Correct	296 ms	76304 KB	Output is correct
7	Correct	285 ms	82508 KB	Output is correct
8	Correct	260 ms	88600 KB	Output is correct
9	Correct	260 ms	94648 KB	Output is correct
10	Correct	273 ms	100720 KB	Output is correct
11	Correct	285 ms	106684 KB	Output is correct

Subtask #4
75.0 / 75.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	14 ms	12536 KB	Output is correct
2	Correct	15 ms	12772 KB	Output is correct
3	Correct	16 ms	13336 KB	Output is correct
4	Correct	15 ms	13336 KB	Output is correct
5	Correct	15 ms	13336 KB	Output is correct
6	Correct	14 ms	13336 KB	Output is correct
7	Correct	14 ms	13336 KB	Output is correct
8	Correct	167 ms	14292 KB	Output is correct
9	Correct	167 ms	14300 KB	Output is correct
10	Correct	185 ms	14708 KB	Output is correct
11	Correct	176 ms	15072 KB	Output is correct
12	Correct	169 ms	15072 KB	Output is correct
13	Correct	166 ms	15072 KB	Output is correct
14	Correct	178 ms	15072 KB	Output is correct
15	Correct	264 ms	15072 KB	Output is correct
16	Correct	150 ms	15072 KB	Output is correct
17	Correct	164 ms	15072 KB	Output is correct
18	Correct	167 ms	15072 KB	Output is correct
19	Correct	177 ms	15072 KB	Output is correct
20	Correct	157 ms	15072 KB	Output is correct
21	Correct	150 ms	15072 KB	Output is correct
22	Correct	167 ms	15072 KB	Output is correct
23	Correct	157 ms	15072 KB	Output is correct
24	Correct	157 ms	15072 KB	Output is correct
25	Correct	160 ms	15072 KB	Output is correct
26	Correct	160 ms	15072 KB	Output is correct
27	Correct	387 ms	41520 KB	Output is correct
28	Correct	387 ms	48884 KB	Output is correct
29	Correct	366 ms	55676 KB	Output is correct
30	Correct	382 ms	63076 KB	Output is correct
31	Correct	371 ms	70420 KB	Output is correct
32	Correct	296 ms	76304 KB	Output is correct
33	Correct	285 ms	82508 KB	Output is correct
34	Correct	260 ms	88600 KB	Output is correct
35	Correct	260 ms	94648 KB	Output is correct
36	Correct	273 ms	100720 KB	Output is correct
37	Correct	285 ms	106684 KB	Output is correct
38	Correct	705 ms	182796 KB	Output is correct
39	Correct	742 ms	215424 KB	Output is correct
40	Correct	614 ms	215424 KB	Output is correct
41	Correct	648 ms	235732 KB	Output is correct
42	Correct	325 ms	235732 KB	Output is correct
43	Correct	297 ms	235732 KB	Output is correct
44	Correct	505 ms	235732 KB	Output is correct
45	Correct	502 ms	235732 KB	Output is correct
46	Correct	410 ms	235732 KB	Output is correct
47	Correct	286 ms	235732 KB	Output is correct
48	Correct	290 ms	235732 KB	Output is correct
49	Correct	398 ms	241228 KB	Output is correct
50	Correct	395 ms	251444 KB	Output is correct
51	Correct	403 ms	261840 KB	Output is correct
52	Correct	381 ms	262144 KB	Output is correct
53	Correct	509 ms	262144 KB	Output is correct
54	Correct	579 ms	262144 KB	Output is correct
55	Correct	476 ms	262144 KB	Output is correct

Submission #47104

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 5.0 / 5.0

Subtask #3 15.0 / 15.0

Subtask #4 75.0 / 75.0

Subtask #1
5.0 / 5.0

Subtask #2
5.0 / 5.0

Subtask #3
15.0 / 15.0

Subtask #4
75.0 / 75.0