oj.uz

답안 #588138

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
588138 2022-07-02T18:01:08 Z Clan328 분수 공원 (IOI21_parks) C++17
15 / 100
 165 ms 23356 KB 
#include "parks.h"
#include <bits/stdc++.h>

using namespace std;

#define pb push_back

struct Coord {
    int x, y, i;

    bool operator<(Coord other) const  {
        if (y == other.y) {
            return x < other.x;
        }
        return y < other.y;
    }
};

int n;
vector<Coord> coords;
std::vector<int> u, v, a, b;

vector<int> link;

int find(int x) {
    if (link[x] != x) link[x] = find(link[x]);
    return link[x];
}

void unite(int a, int b) {
    int x = find(a), y = find(b);
    link[x] = y;
}

bool same(int a, int b) {
    return find(a) == find(b);
}

void connect(int i, int j) {
    if (coords[i].x == coords[j].x) {
        u.pb(coords[i].i);
        v.pb(coords[j].i);
        if (coords[i].x == 4)
            a.pb(coords[i].x+1);
        else
            a.pb(coords[i].x-1);
        b.pb(coords[i].y+1);
    } else if (coords[i].y == coords[j].y) {
        u.pb(coords[i].i);
        v.pb(coords[j].i);
        a.pb(coords[i].x+1);
        b.pb(coords[i].y-1);
    }
}

int construct_roads(std::vector<int> x, std::vector<int> y) {
    if (x.size() == 1) {
        build({}, {}, {}, {});
        return 1;
    }  

    n = x.size();

    int maxX = 0;
    for (int i = 0; i < n; i++) maxX = max(maxX, x[i]);

    bool res = true;
    if (maxX <= 4) {
        coords = vector<Coord>(n);
        for (int i = 0; i < n; i++) {
            coords[i] = {x[i], y[i], i};
        }

        sort(coords.begin(), coords.end());
        
        link = vector<int>(n);
        iota(link.begin(), link.end(), 0);
        for (int i = 0; i < n-1; i++) {
            if ((coords[i].y+2 == coords[i+1].y && coords[i].x == coords[i+1].x) || (coords[i].y == coords[i+1].y && abs(coords[i+1].x-coords[i].x) == 2)) {
                connect(i, i+1);
                unite(i, i+1);
            }
            if (i+2 < n && ((coords[i].y+2 == coords[i+2].y && coords[i].x == coords[i+2].x) || (coords[i].y == coords[i+2].y && abs(coords[i+2].x-coords[i].x) == 2))) {
                connect(i, i+2);
                unite(i, i+2);
            }
        }
        
        for (int i = 0; i < n-1; i++) {
            res &= find(i) == find(i+1);
        }
    } else {
        int maxY = 0;
        for (int i = 0; i < n; i++) maxY = max(maxY, y[i]);

        link = vector<int>(n);
        iota(link.begin(), link.end(), 0);
        vector<vector<int>> mat(maxY/2, vector<int>(3)), matIdx(maxY/2, vector<int>(3));
        for (int i = 0; i < n; i++) {
            mat[y[i]/2-1][x[i]/2-1] = 1;
            matIdx[y[i]/2-1][x[i]/2-1] = i;
        }

        map<int, map<int, int>> bench;

        for (int i = 0; i < maxY/2; i++) {
            if (mat[i][0] && mat[i][1]) {
                if (bench[3][2*i+1]) {
                    if (!same(matIdx[i][0], matIdx[i][1])) {
                        if (bench[3][2*i+3]) res = false;
                        u.pb(matIdx[i][0]);
                        v.pb(matIdx[i][1]);
                        a.pb(3);
                        b.pb(2*i+3);
                        unite(matIdx[i][0], matIdx[i][1]);
                    }
                } else {
                    u.pb(matIdx[i][0]);
                    v.pb(matIdx[i][1]);
                    a.pb(3);
                    b.pb(2*i+1);
                    unite(matIdx[i][0], matIdx[i][1]);
                }
            }
            if (mat[i][1] && mat[i][2]) {
                if (bench[5][2*i+1]) {
                    if (!same(matIdx[i][1], matIdx[i][2])) {
                        if (bench[5][2*i+3]) res = false;
                        u.pb(matIdx[i][1]);
                        v.pb(matIdx[i][2]);
                        a.pb(5);
                        b.pb(2*i+3);
                        unite(matIdx[i][1], matIdx[i][2]);
                    }
                } else {
                    u.pb(matIdx[i][1]);
                    v.pb(matIdx[i][2]);
                    a.pb(5);
                    b.pb(2*i+1);
                    unite(matIdx[i][1], matIdx[i][2]);
                }
            }
            if (i == maxY/2-1) continue;
            bool isValid = false;
            if (mat[i][0] && mat[i+1][0]) {
                u.pb(matIdx[i][0]);
                v.pb(matIdx[i+1][0]);
                a.pb(1);
                b.pb(2*i+3);
                unite(matIdx[i][0], matIdx[i+1][0]);
                isValid = true;
            }
            if (mat[i][2] && mat[i+1][2]) {
                u.pb(matIdx[i][2]);
                v.pb(matIdx[i+1][2]);
                a.pb(7);
                b.pb(2*i+3);
                unite(matIdx[i][2], matIdx[i+1][2]);
                isValid = true;
            }

            if (!isValid && mat[i][1] && mat[i+1][1]) {
                u.pb(matIdx[i][1]);
                v.pb(matIdx[i+1][1]);
                if (!bench[3][2*i+3])
                    a.pb(3);
                else if (!bench[5][2*i+3])
                    a.pb(5);
                else
                    res = false;
                b.pb(2*i+3);
                unite(matIdx[i][1], matIdx[i+1][1]);
            }

            if (a.size()) {
                bench[a[a.size()-1]][b[b.size()-1]] = true;
            }
        }



        for (int i = 0; i < n-1; i++) {
            res &= find(i) == find(i+1);
        }
    }

    if (!res) return 0;

    build(u, v, a, b);
    return 1;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 57 ms 9404 KB Output is correct
10 Correct 5 ms 1364 KB Output is correct
11 Correct 26 ms 5196 KB Output is correct
12 Correct 11 ms 1968 KB Output is correct
13 Correct 11 ms 2892 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 60 ms 9372 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 57 ms 9404 KB Output is correct
10 Correct 5 ms 1364 KB Output is correct
11 Correct 26 ms 5196 KB Output is correct
12 Correct 11 ms 1968 KB Output is correct
13 Correct 11 ms 2892 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 60 ms 9372 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 165 ms 23356 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 2 ms 596 KB Output is correct
28 Correct 57 ms 9492 KB Output is correct
29 Correct 86 ms 14048 KB Output is correct
30 Correct 124 ms 18652 KB Output is correct
31 Correct 150 ms 23248 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 2 ms 468 KB Output is correct
45 Correct 60 ms 9160 KB Output is correct
46 Correct 83 ms 13172 KB Output is correct
47 Correct 88 ms 13192 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 57 ms 9404 KB Output is correct
10 Correct 5 ms 1364 KB Output is correct
11 Correct 26 ms 5196 KB Output is correct
12 Correct 11 ms 1968 KB Output is correct
13 Correct 11 ms 2892 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 60 ms 9372 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 165 ms 23356 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 2 ms 596 KB Output is correct
28 Correct 57 ms 9492 KB Output is correct
29 Correct 86 ms 14048 KB Output is correct
30 Correct 124 ms 18652 KB Output is correct
31 Correct 150 ms 23248 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 2 ms 468 KB Output is correct
45 Correct 60 ms 9160 KB Output is correct
46 Correct 83 ms 13172 KB Output is correct
47 Correct 88 ms 13192 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Incorrect 0 ms 212 KB Tree @(3, 7) appears more than once: for edges on positions 4 and 6
55 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 57 ms 9404 KB Output is correct
10 Correct 5 ms 1364 KB Output is correct
11 Correct 26 ms 5196 KB Output is correct
12 Correct 11 ms 1968 KB Output is correct
13 Correct 11 ms 2892 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 60 ms 9372 KB Output is correct
17 Runtime error 1 ms 340 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 57 ms 9404 KB Output is correct
10 Correct 5 ms 1364 KB Output is correct
11 Correct 26 ms 5196 KB Output is correct
12 Correct 11 ms 1968 KB Output is correct
13 Correct 11 ms 2892 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 60 ms 9372 KB Output is correct
17 Runtime error 50 ms 19432 KB Execution killed with signal 11
18 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 57 ms 9404 KB Output is correct
10 Correct 5 ms 1364 KB Output is correct
11 Correct 26 ms 5196 KB Output is correct
12 Correct 11 ms 1968 KB Output is correct
13 Correct 11 ms 2892 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 60 ms 9372 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 165 ms 23356 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 2 ms 596 KB Output is correct
28 Correct 57 ms 9492 KB Output is correct
29 Correct 86 ms 14048 KB Output is correct
30 Correct 124 ms 18652 KB Output is correct
31 Correct 150 ms 23248 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 2 ms 468 KB Output is correct
45 Correct 60 ms 9160 KB Output is correct
46 Correct 83 ms 13172 KB Output is correct
47 Correct 88 ms 13192 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 0 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Incorrect 0 ms 212 KB Tree @(3, 7) appears more than once: for edges on positions 4 and 6
55 Halted 0 ms 0 KB -