oj.uz

Submission #435631

# Submission time Handle Problem Language Result Execution time Memory
435631 2021-06-23T13:47:57 Z 79brue Fountain Parks (IOI21_parks) C++17
15 / 100
 1321 ms 148248 KB 
#include <bits/stdc++.h>
#include "parks.h"

using namespace std;

typedef long long ll;

struct Edge{
    int u, v, idx;
    Edge(){}
    Edge(int u, int v, int idx): u(u), v(v), idx(idx){}

    bool operator==(const Edge &r)const{
        return idx==r.idx;
    }
};

struct dat{
    int x, y;
    vector<Edge> vec;
    dat(){}
    dat(int x, int y, vector<Edge> vec): x(x), y(y), vec(vec){}

    bool operator<(const dat &r)const{
        if(vec.size() != r.vec.size()) return vec.size() < r.vec.size();
        return make_pair(x, y) < make_pair(r.x, r.y);
    }
};

int xx[]={1, -1, 0, 0}, yy[]={0, 0, 1, -1};

int n;
pair<int, int> arr[200002];
map<pair<int, int>, int> idx;

int par[200002];
int edgeU[200002], edgeV[200002], edgeCnt;
int edgeA[200002], edgeB[200002];
vector<pair<int, int> > link[200002];
map<pair<int, int>, vector<Edge> > mp;
set<dat> st;

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

void merge(int x, int y){
    x = find(x), y = find(y);
    par[y] = x;
}

void dfs(int u){
    int x = arr[u].first, y = arr[u].second;
    for(int d=0; d<4; d++){
        int tx = x+xx[d]+xx[d], ty = y+yy[d]+yy[d];
        if(idx.find(make_pair(tx, ty)) == idx.end()) continue;
        int tmp = idx[make_pair(tx, ty)];
        if(find(u) == find(tmp)) continue;

        edgeU[edgeCnt] = u, edgeV[edgeCnt] = tmp;
        if(x == tx){
            mp[make_pair(x+1, y+yy[d])].push_back(Edge(u, tmp, edgeCnt));
            mp[make_pair(x-1, y+yy[d])].push_back(Edge(u, tmp, edgeCnt));
            link[edgeCnt].push_back(make_pair(x+1, y+yy[d]));
            link[edgeCnt].push_back(make_pair(x-1, y+yy[d]));
        }
        else{
            mp[make_pair(x+xx[d], y+1)].push_back(Edge(u, tmp, edgeCnt));
            mp[make_pair(x+xx[d], y-1)].push_back(Edge(u, tmp, edgeCnt));
            link[edgeCnt].push_back(make_pair(x+xx[d], y-1));
            link[edgeCnt].push_back(make_pair(x+xx[d], y+1));
        }
        edgeCnt++;

        merge(u, tmp);
        dfs(tmp);
    }
}

int construct_roads(vector<int> x, vector<int> y) {
    n = (int)x.size();
    for(int i=0; i<n; i++){
        arr[i] = make_pair(x[i], y[i]);
        par[i] = i;
        idx[arr[i]] = i;
    }

    int start = min_element(arr, arr+n) - arr;
    dfs(start);
    for(int i=0; i<n; i++){
        if(find(i) != find(0)) return 0;
    }

    for(auto p: mp){
        st.insert(dat(p.first.first, p.first.second, p.second));
    }
    while(!st.empty()){
        dat tmp = *st.begin(); st.erase(st.begin());
        if(tmp.vec.empty()) continue;
        Edge edge = tmp.vec[0];
        edgeA[edge.idx] = tmp.x;
        edgeB[edge.idx] = tmp.y;
        for(auto p: link[edge.idx]){
            if(p.first == tmp.x && p.second == tmp.y) continue;
            st.erase(dat(p.first, p.second, mp[p]));
            auto it = find(mp[p].begin(), mp[p].end(), Edge(edgeU[edge.idx], edgeV[edge.idx], edge.idx));
            assert(it != mp[p].end());
            mp[p].erase(it);
            st.insert(dat(p.first, p.second, mp[p]));
        }
    }

    build(vector<int>(edgeU, edgeU+n-1), vector<int>(edgeV, edgeV+n-1), vector<int>(edgeA, edgeA+n-1), vector<int>(edgeB, edgeB+n-1));
    return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 566 ms 76232 KB Output is correct
10 Correct 52 ms 12100 KB Output is correct
11 Correct 269 ms 43352 KB Output is correct
12 Correct 69 ms 15736 KB Output is correct
13 Correct 82 ms 20588 KB Output is correct
14 Correct 5 ms 5196 KB Output is correct
15 Correct 6 ms 5324 KB Output is correct
16 Correct 589 ms 76200 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 566 ms 76232 KB Output is correct
10 Correct 52 ms 12100 KB Output is correct
11 Correct 269 ms 43352 KB Output is correct
12 Correct 69 ms 15736 KB Output is correct
13 Correct 82 ms 20588 KB Output is correct
14 Correct 5 ms 5196 KB Output is correct
15 Correct 6 ms 5324 KB Output is correct
16 Correct 589 ms 76200 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 4 ms 4940 KB Output is correct
19 Correct 5 ms 4940 KB Output is correct
20 Correct 4 ms 5004 KB Output is correct
21 Correct 4 ms 4940 KB Output is correct
22 Correct 4 ms 4940 KB Output is correct
23 Correct 1092 ms 108652 KB Output is correct
24 Correct 3 ms 4940 KB Output is correct
25 Correct 8 ms 5560 KB Output is correct
26 Correct 8 ms 5708 KB Output is correct
27 Correct 7 ms 5452 KB Output is correct
28 Correct 433 ms 46312 KB Output is correct
29 Correct 594 ms 67092 KB Output is correct
30 Correct 809 ms 87868 KB Output is correct
31 Correct 1092 ms 108688 KB Output is correct
32 Correct 4 ms 4940 KB Output is correct
33 Correct 4 ms 4940 KB Output is correct
34 Correct 4 ms 4940 KB Output is correct
35 Correct 4 ms 4940 KB Output is correct
36 Correct 4 ms 4940 KB Output is correct
37 Correct 4 ms 4940 KB Output is correct
38 Correct 4 ms 4940 KB Output is correct
39 Correct 5 ms 5028 KB Output is correct
40 Correct 4 ms 4940 KB Output is correct
41 Correct 5 ms 5068 KB Output is correct
42 Correct 4 ms 4940 KB Output is correct
43 Correct 7 ms 5452 KB Output is correct
44 Correct 5 ms 5452 KB Output is correct
45 Correct 499 ms 60196 KB Output is correct
46 Correct 728 ms 84956 KB Output is correct
47 Correct 832 ms 85076 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 566 ms 76232 KB Output is correct
10 Correct 52 ms 12100 KB Output is correct
11 Correct 269 ms 43352 KB Output is correct
12 Correct 69 ms 15736 KB Output is correct
13 Correct 82 ms 20588 KB Output is correct
14 Correct 5 ms 5196 KB Output is correct
15 Correct 6 ms 5324 KB Output is correct
16 Correct 589 ms 76200 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 4 ms 4940 KB Output is correct
19 Correct 5 ms 4940 KB Output is correct
20 Correct 4 ms 5004 KB Output is correct
21 Correct 4 ms 4940 KB Output is correct
22 Correct 4 ms 4940 KB Output is correct
23 Correct 1092 ms 108652 KB Output is correct
24 Correct 3 ms 4940 KB Output is correct
25 Correct 8 ms 5560 KB Output is correct
26 Correct 8 ms 5708 KB Output is correct
27 Correct 7 ms 5452 KB Output is correct
28 Correct 433 ms 46312 KB Output is correct
29 Correct 594 ms 67092 KB Output is correct
30 Correct 809 ms 87868 KB Output is correct
31 Correct 1092 ms 108688 KB Output is correct
32 Correct 4 ms 4940 KB Output is correct
33 Correct 4 ms 4940 KB Output is correct
34 Correct 4 ms 4940 KB Output is correct
35 Correct 4 ms 4940 KB Output is correct
36 Correct 4 ms 4940 KB Output is correct
37 Correct 4 ms 4940 KB Output is correct
38 Correct 4 ms 4940 KB Output is correct
39 Correct 5 ms 5028 KB Output is correct
40 Correct 4 ms 4940 KB Output is correct
41 Correct 5 ms 5068 KB Output is correct
42 Correct 4 ms 4940 KB Output is correct
43 Correct 7 ms 5452 KB Output is correct
44 Correct 5 ms 5452 KB Output is correct
45 Correct 499 ms 60196 KB Output is correct
46 Correct 728 ms 84956 KB Output is correct
47 Correct 832 ms 85076 KB Output is correct
48 Correct 4 ms 4940 KB Output is correct
49 Correct 4 ms 4940 KB Output is correct
50 Correct 4 ms 4940 KB Output is correct
51 Correct 4 ms 4940 KB Output is correct
52 Correct 4 ms 4940 KB Output is correct
53 Correct 4 ms 4940 KB Output is correct
54 Correct 4 ms 4940 KB Output is correct
55 Correct 1210 ms 107064 KB Output is correct
56 Correct 5 ms 4940 KB Output is correct
57 Correct 12 ms 5888 KB Output is correct
58 Correct 23 ms 7992 KB Output is correct
59 Correct 11 ms 6348 KB Output is correct
60 Correct 517 ms 55852 KB Output is correct
61 Correct 722 ms 73736 KB Output is correct
62 Correct 971 ms 89464 KB Output is correct
63 Correct 1157 ms 107052 KB Output is correct
64 Correct 4 ms 4940 KB Output is correct
65 Correct 4 ms 4940 KB Output is correct
66 Correct 4 ms 4940 KB Output is correct
67 Correct 1250 ms 147796 KB Output is correct
68 Correct 1321 ms 135364 KB Output is correct
69 Correct 1241 ms 140836 KB Output is correct
70 Correct 8 ms 5836 KB Output is correct
71 Correct 10 ms 6220 KB Output is correct
72 Runtime error 481 ms 112144 KB Execution killed with signal 6
73 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 566 ms 76232 KB Output is correct
10 Correct 52 ms 12100 KB Output is correct
11 Correct 269 ms 43352 KB Output is correct
12 Correct 69 ms 15736 KB Output is correct
13 Correct 82 ms 20588 KB Output is correct
14 Correct 5 ms 5196 KB Output is correct
15 Correct 6 ms 5324 KB Output is correct
16 Correct 589 ms 76200 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 4 ms 4940 KB Output is correct
19 Correct 4 ms 4940 KB Output is correct
20 Correct 990 ms 104852 KB Output is correct
21 Correct 1014 ms 92016 KB Output is correct
22 Correct 999 ms 104636 KB Output is correct
23 Correct 953 ms 121704 KB Output is correct
24 Correct 214 ms 23004 KB Output is correct
25 Correct 231 ms 23204 KB Output is correct
26 Correct 200 ms 23140 KB Output is correct
27 Correct 1004 ms 122700 KB Output is correct
28 Correct 973 ms 122648 KB Output is correct
29 Correct 1247 ms 122676 KB Output is correct
30 Correct 1304 ms 122756 KB Output is correct
31 Correct 4 ms 4940 KB Output is correct
32 Runtime error 71 ms 23336 KB Execution killed with signal 6
33 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 566 ms 76232 KB Output is correct
10 Correct 52 ms 12100 KB Output is correct
11 Correct 269 ms 43352 KB Output is correct
12 Correct 69 ms 15736 KB Output is correct
13 Correct 82 ms 20588 KB Output is correct
14 Correct 5 ms 5196 KB Output is correct
15 Correct 6 ms 5324 KB Output is correct
16 Correct 589 ms 76200 KB Output is correct
17 Correct 1189 ms 148248 KB Output is correct
18 Correct 1266 ms 141980 KB Output is correct
19 Correct 1027 ms 104592 KB Output is correct
20 Correct 1119 ms 108144 KB Output is correct
21 Correct 1075 ms 111968 KB Output is correct
22 Correct 4 ms 4940 KB Output is correct
23 Runtime error 140 ms 37628 KB Execution killed with signal 6
24 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 4940 KB Output is correct
3 Correct 4 ms 4940 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 4 ms 4940 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 566 ms 76232 KB Output is correct
10 Correct 52 ms 12100 KB Output is correct
11 Correct 269 ms 43352 KB Output is correct
12 Correct 69 ms 15736 KB Output is correct
13 Correct 82 ms 20588 KB Output is correct
14 Correct 5 ms 5196 KB Output is correct
15 Correct 6 ms 5324 KB Output is correct
16 Correct 589 ms 76200 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 4 ms 4940 KB Output is correct
19 Correct 5 ms 4940 KB Output is correct
20 Correct 4 ms 5004 KB Output is correct
21 Correct 4 ms 4940 KB Output is correct
22 Correct 4 ms 4940 KB Output is correct
23 Correct 1092 ms 108652 KB Output is correct
24 Correct 3 ms 4940 KB Output is correct
25 Correct 8 ms 5560 KB Output is correct
26 Correct 8 ms 5708 KB Output is correct
27 Correct 7 ms 5452 KB Output is correct
28 Correct 433 ms 46312 KB Output is correct
29 Correct 594 ms 67092 KB Output is correct
30 Correct 809 ms 87868 KB Output is correct
31 Correct 1092 ms 108688 KB Output is correct
32 Correct 4 ms 4940 KB Output is correct
33 Correct 4 ms 4940 KB Output is correct
34 Correct 4 ms 4940 KB Output is correct
35 Correct 4 ms 4940 KB Output is correct
36 Correct 4 ms 4940 KB Output is correct
37 Correct 4 ms 4940 KB Output is correct
38 Correct 4 ms 4940 KB Output is correct
39 Correct 5 ms 5028 KB Output is correct
40 Correct 4 ms 4940 KB Output is correct
41 Correct 5 ms 5068 KB Output is correct
42 Correct 4 ms 4940 KB Output is correct
43 Correct 7 ms 5452 KB Output is correct
44 Correct 5 ms 5452 KB Output is correct
45 Correct 499 ms 60196 KB Output is correct
46 Correct 728 ms 84956 KB Output is correct
47 Correct 832 ms 85076 KB Output is correct
48 Correct 4 ms 4940 KB Output is correct
49 Correct 4 ms 4940 KB Output is correct
50 Correct 4 ms 4940 KB Output is correct
51 Correct 4 ms 4940 KB Output is correct
52 Correct 4 ms 4940 KB Output is correct
53 Correct 4 ms 4940 KB Output is correct
54 Correct 4 ms 4940 KB Output is correct
55 Correct 1210 ms 107064 KB Output is correct
56 Correct 5 ms 4940 KB Output is correct
57 Correct 12 ms 5888 KB Output is correct
58 Correct 23 ms 7992 KB Output is correct
59 Correct 11 ms 6348 KB Output is correct
60 Correct 517 ms 55852 KB Output is correct
61 Correct 722 ms 73736 KB Output is correct
62 Correct 971 ms 89464 KB Output is correct
63 Correct 1157 ms 107052 KB Output is correct
64 Correct 4 ms 4940 KB Output is correct
65 Correct 4 ms 4940 KB Output is correct
66 Correct 4 ms 4940 KB Output is correct
67 Correct 1250 ms 147796 KB Output is correct
68 Correct 1321 ms 135364 KB Output is correct
69 Correct 1241 ms 140836 KB Output is correct
70 Correct 8 ms 5836 KB Output is correct
71 Correct 10 ms 6220 KB Output is correct
72 Runtime error 481 ms 112144 KB Execution killed with signal 6
73 Halted 0 ms 0 KB -