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Submission #201870

# Submission time Handle Problem Language Result Execution time Memory
201870 2020-02-12T13:17:34 Z blue Examination (JOI19_examination) C++17
100 / 100
 2496 ms 121720 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
using namespace std;

int N, Q;

struct event
{
    int x, y, z;
    int i;
};

event* E;

bool xsort(event a, event b)
{
    return a.x < b.x;
}

bool zsort(event a, event b)
{
    if(a.z == b.z) return a.i > b.i;
    return a.z > b.z;
}

map<int, int>* Ys = new map<int, int>[200001];

int main()
{
    cin >> N >> Q;

    E = new event[N+Q];
    for(int i = 0; i < N; i++)
    {
        cin >> E[i].x >> E[i].y;
        E[i].z = E[i].x + E[i].y;
        E[i].x *= -1;
        E[i].y *= -1;
        E[i].i = i+1;
    }
    for(int i = 0; i < Q; i++)
    {
        cin >> E[N+i].x >> E[N+i].y >> E[N+i].z;
        E[N+i].x *= -1;
        E[N+i].y *= -1;
        E[N+i].i = -(i+1);
    }

    sort(E, E+N+Q, xsort);
    int p = E[0].x, q;
    E[0].x = 1;
    for(int i = 1; i < N+Q; i++)
    {
        q = E[i].x;
        E[i].x = E[i-1].x + (p != q);
        p = q;
    }
    for(int i = 0; i < N+Q; i++)
    {
        if(E[i].i > 0)
            for(int j = E[i].x; j <= 200000; j += j&-j) Ys[j][E[i].y] = 0;
        else
            for(int j = E[i].x; j >= 1; j -= j&-j) Ys[j][E[i].y] = 0;

    }

    for(int i = 1; i <= 200000; i++)
    {
        int q = 0;
        for(auto& ys: Ys[i])
        {
            q++;
            ys.second = q;
        }
    }

    int* BIT[200001];
    for(int i = 1; i <= 200000; i++)
    {
        BIT[i] = new int[Ys[i].size() + 1];
        for(int j = 1; j <= Ys[i].size(); j++) BIT[i][j] = 0;
    }

    int res[Q+1];
    sort(E, E+N+Q, zsort);
    for(int i = 0; i < N+Q; i++)
    {
        if(E[i].i > 0)
        {
            for(int j = E[i].x; j <= 200000; j += j&-j)
                for(int k = Ys[ j ][ E[i].y ]; k <= Ys[ j ].size(); k += k&-k)
                    BIT[j][k]++;
        }
        else
        {
            res[-(E[i].i)] = 0;
            for(int j = E[i].x; j >= 1; j -= j&-j)
                for(int k = Ys[ j ][ E[i].y ]; k >= 1; k -= k&-k)
                    res[-(E[i].i)] += BIT[j][k];
        }
    }
    for(int i = 1; i <= Q; i++) cout << res[i] << '\n';
    return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:83:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 1; j <= Ys[i].size(); j++) BIT[i][j] = 0;
                        ~~^~~~~~~~~~~~~~~
examination.cpp:93:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for(int k = Ys[ j ][ E[i].y ]; k <= Ys[ j ].size(); k += k&-k)
                                                ~~^~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 17528 KB Output is correct
2 Correct 20 ms 17528 KB Output is correct
3 Correct 20 ms 17532 KB Output is correct
4 Correct 20 ms 17528 KB Output is correct
5 Correct 21 ms 17528 KB Output is correct
6 Correct 20 ms 17528 KB Output is correct
7 Correct 48 ms 20344 KB Output is correct
8 Correct 47 ms 20344 KB Output is correct
9 Correct 48 ms 20344 KB Output is correct
10 Correct 32 ms 18296 KB Output is correct
11 Correct 41 ms 20472 KB Output is correct
12 Correct 26 ms 17656 KB Output is correct
13 Correct 47 ms 20344 KB Output is correct
14 Correct 46 ms 20344 KB Output is correct
15 Correct 45 ms 20476 KB Output is correct
16 Correct 39 ms 20472 KB Output is correct
17 Correct 29 ms 18040 KB Output is correct
18 Correct 25 ms 17656 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2207 ms 105760 KB Output is correct
2 Correct 2277 ms 108280 KB Output is correct
3 Correct 2203 ms 108160 KB Output is correct
4 Correct 424 ms 40312 KB Output is correct
5 Correct 1242 ms 85588 KB Output is correct
6 Correct 225 ms 22648 KB Output is correct
7 Correct 2496 ms 108920 KB Output is correct
8 Correct 1978 ms 104744 KB Output is correct
9 Correct 2077 ms 98936 KB Output is correct
10 Correct 962 ms 80760 KB Output is correct
11 Correct 301 ms 29688 KB Output is correct
12 Correct 188 ms 22264 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2207 ms 105760 KB Output is correct
2 Correct 2277 ms 108280 KB Output is correct
3 Correct 2203 ms 108160 KB Output is correct
4 Correct 424 ms 40312 KB Output is correct
5 Correct 1242 ms 85588 KB Output is correct
6 Correct 225 ms 22648 KB Output is correct
7 Correct 2496 ms 108920 KB Output is correct
8 Correct 1978 ms 104744 KB Output is correct
9 Correct 2077 ms 98936 KB Output is correct
10 Correct 962 ms 80760 KB Output is correct
11 Correct 301 ms 29688 KB Output is correct
12 Correct 188 ms 22264 KB Output is correct
13 Correct 2314 ms 108480 KB Output is correct
14 Correct 2277 ms 108536 KB Output is correct
15 Correct 2194 ms 108256 KB Output is correct
16 Correct 450 ms 40696 KB Output is correct
17 Correct 1285 ms 85880 KB Output is correct
18 Correct 227 ms 22776 KB Output is correct
19 Correct 2285 ms 108792 KB Output is correct
20 Correct 2298 ms 108792 KB Output is correct
21 Correct 2353 ms 108140 KB Output is correct
22 Correct 944 ms 80800 KB Output is correct
23 Correct 308 ms 29944 KB Output is correct
24 Correct 181 ms 22264 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 17528 KB Output is correct
2 Correct 20 ms 17528 KB Output is correct
3 Correct 20 ms 17532 KB Output is correct
4 Correct 20 ms 17528 KB Output is correct
5 Correct 21 ms 17528 KB Output is correct
6 Correct 20 ms 17528 KB Output is correct
7 Correct 48 ms 20344 KB Output is correct
8 Correct 47 ms 20344 KB Output is correct
9 Correct 48 ms 20344 KB Output is correct
10 Correct 32 ms 18296 KB Output is correct
11 Correct 41 ms 20472 KB Output is correct
12 Correct 26 ms 17656 KB Output is correct
13 Correct 47 ms 20344 KB Output is correct
14 Correct 46 ms 20344 KB Output is correct
15 Correct 45 ms 20476 KB Output is correct
16 Correct 39 ms 20472 KB Output is correct
17 Correct 29 ms 18040 KB Output is correct
18 Correct 25 ms 17656 KB Output is correct
19 Correct 2207 ms 105760 KB Output is correct
20 Correct 2277 ms 108280 KB Output is correct
21 Correct 2203 ms 108160 KB Output is correct
22 Correct 424 ms 40312 KB Output is correct
23 Correct 1242 ms 85588 KB Output is correct
24 Correct 225 ms 22648 KB Output is correct
25 Correct 2496 ms 108920 KB Output is correct
26 Correct 1978 ms 104744 KB Output is correct
27 Correct 2077 ms 98936 KB Output is correct
28 Correct 962 ms 80760 KB Output is correct
29 Correct 301 ms 29688 KB Output is correct
30 Correct 188 ms 22264 KB Output is correct
31 Correct 2314 ms 108480 KB Output is correct
32 Correct 2277 ms 108536 KB Output is correct
33 Correct 2194 ms 108256 KB Output is correct
34 Correct 450 ms 40696 KB Output is correct
35 Correct 1285 ms 85880 KB Output is correct
36 Correct 227 ms 22776 KB Output is correct
37 Correct 2285 ms 108792 KB Output is correct
38 Correct 2298 ms 108792 KB Output is correct
39 Correct 2353 ms 108140 KB Output is correct
40 Correct 944 ms 80800 KB Output is correct
41 Correct 308 ms 29944 KB Output is correct
42 Correct 181 ms 22264 KB Output is correct
43 Correct 2360 ms 116352 KB Output is correct
44 Correct 2345 ms 116472 KB Output is correct
45 Correct 2290 ms 116344 KB Output is correct
46 Correct 526 ms 47608 KB Output is correct
47 Correct 1577 ms 118008 KB Output is correct
48 Correct 227 ms 22560 KB Output is correct
49 Correct 2398 ms 121720 KB Output is correct
50 Correct 2245 ms 116472 KB Output is correct
51 Correct 2274 ms 121592 KB Output is correct
52 Correct 1286 ms 116600 KB Output is correct
53 Correct 362 ms 36088 KB Output is correct