oj.uz

Submission #260281

# Submission time Handle Problem Language Result Execution time Memory
260281 2020-08-10T02:34:59 Z anonymous Split the Attractions (IOI19_split) C++14
100 / 100
 185 ms 26356 KB 
#include "split.h"
#include <vector>
#include <utility>
#include <algorithm>
#define MAXN 100005
using namespace std;

int N, M, CanDo = 1, Done,  Ans[MAXN], NodeType[MAXN];
int Size[MAXN], Lo[MAXN], Dep[MAXN], Par[MAXN];
pair <int,int> Days[3];
vector <int> adj[MAXN];
vector <pair<int,bool> > spT[MAXN]; //spanning tree rooted at 1

void dfs2(int u, int day, bool b) { //b = 1 means dfs on spanning tree
    if (!Days[day].first || Ans[u]) {return;}
    Ans[u] = Days[day].second;
    Days[day].first--;
    if (b) {
        for (auto e: spT[u]) {
            dfs2(e.first, day, b);
        }
    } else {
        for (int v: adj[u]) {
            dfs2(v, day, b);
        }
    }
}

void dfs(int u) {
    if (Done) {return;}
    Size[u] = 1;
    Lo[u] = u;
    bool AllSmall = 1;
    int cutsize = 1;
    for (int v: adj[u]) {
        if (!Size[v]) {
            Dep[v] = Dep[u] + 1;
            Par[v] = u;
            dfs(v);
            if (Dep[Lo[v]] < Dep[Lo[u]]) {
                Lo[u] = Lo[v];
            }
            AllSmall &= Size[v] < Days[0].first;
            if (Lo[v] == v || Lo[v] == u) {
                spT[u].push_back({v,1});
                cutsize += Size[v];
            } else {
                spT[u].push_back({v,0});
            }
            Size[u] += Size[v];
        } else if (v != Par[u] && Dep[v] < Dep[Lo[u]]) {
            Lo[u] = v;
        }
    }
    if (Size[u] >= Days[0].first && Size[u] <= N-Days[0].first) {
        if (Size[u] >= Days[1].first) {
            dfs2(u, 1, 1);
            dfs2(Par[u], 0, 0);
        } else {
            dfs2(u,0, 1);
            dfs2(Par[u],1, 0);
        }
        Done = true;
    } else if ((Size[u] > N-Days[0].first) && AllSmall) {
        if (cutsize > N-Days[0].first) {
            //impossible
            CanDo = 0;
        } else {
            //we got this
            if (cutsize >= Days[1].first) {
                Ans[u] = Days[1].second;
                Days[1].first--;
                for (auto e: spT[u]) {
                    if (e.second) {
                        dfs2(e.first, 1, 1);
                    }
                }
                dfs2(Par[u], 0, 0);
            } else {
                Ans[u] = Days[0].second;
                Days[0].first--;
                for (auto e: spT[u]) {
                    if (e.second) {
                        dfs2(e.first, 0, 1);
                    }
                }
                for (auto e: spT[u]) {
                    if (!e.second) {
                        dfs2(e.first, 0, 1);
                    }
                }
                dfs2(Par[u], 1, 0);
            }
        }
        Done = true;
    }
}

vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
	N = n, M = p.size(), Days[0].first = a, Days[1].first = b, Days[2].first = c;
	for (int i=0; i<3; i++) {Days[i].second = i+1;}
	sort(Days,Days+3);

    for (int i=0; i<M; i++) {
        adj[p[i]].push_back(q[i]);
        adj[q[i]].push_back(p[i]);
    }

    dfs(0);

    vector <int> Out;
    if (CanDo) {
        for (int i=0; i < N; i++) {
            if (Ans[i]) {
                Out.push_back(Ans[i]);
            } else {
                Out.push_back(Days[2].second);
            }
        }
    } else {
        for (int i=0; i < N; i++) {
            Out.push_back(0);
        }
    }
    return(Out);
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 4992 KB ok, correct split
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 3 ms 4992 KB ok, correct split
5 Correct 3 ms 5120 KB ok, correct split
6 Correct 4 ms 5120 KB ok, correct split
7 Correct 134 ms 25720 KB ok, correct split
8 Correct 87 ms 16632 KB ok, correct split
9 Correct 94 ms 19960 KB ok, correct split
10 Correct 119 ms 25972 KB ok, correct split
11 Correct 119 ms 26356 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 4992 KB ok, correct split
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 95 ms 11764 KB ok, correct split
5 Correct 78 ms 10968 KB ok, correct split
6 Correct 133 ms 25972 KB ok, correct split
7 Correct 116 ms 22776 KB ok, correct split
8 Correct 118 ms 13600 KB ok, correct split
9 Correct 74 ms 12536 KB ok, correct split
10 Correct 65 ms 13036 KB ok, correct split
11 Correct 62 ms 13000 KB ok, correct split
12 Correct 64 ms 13036 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 117 ms 14092 KB ok, correct split
3 Correct 28 ms 8060 KB ok, correct split
4 Correct 4 ms 4992 KB ok, correct split
5 Correct 120 ms 17528 KB ok, correct split
6 Correct 100 ms 16504 KB ok, correct split
7 Correct 114 ms 17916 KB ok, correct split
8 Correct 114 ms 20340 KB ok, correct split
9 Correct 116 ms 18296 KB ok, correct split
10 Correct 28 ms 8184 KB ok, no valid answer
11 Correct 42 ms 9464 KB ok, no valid answer
12 Correct 79 ms 13552 KB ok, no valid answer
13 Correct 93 ms 13940 KB ok, no valid answer
14 Correct 65 ms 13292 KB ok, no valid answer

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 5024 KB ok, no valid answer
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 3 ms 4992 KB ok, correct split
5 Correct 3 ms 4992 KB ok, correct split
6 Correct 3 ms 4992 KB ok, correct split
7 Correct 3 ms 4992 KB ok, correct split
8 Correct 3 ms 4992 KB ok, correct split
9 Correct 6 ms 5376 KB ok, correct split
10 Correct 5 ms 5248 KB ok, correct split
11 Correct 3 ms 4992 KB ok, correct split
12 Correct 6 ms 5376 KB ok, correct split
13 Correct 3 ms 4992 KB ok, correct split
14 Correct 3 ms 4992 KB ok, correct split
15 Correct 3 ms 4992 KB ok, correct split
16 Correct 3 ms 5024 KB ok, correct split
17 Correct 3 ms 4992 KB ok, correct split
18 Correct 3 ms 4992 KB ok, correct split
19 Correct 4 ms 5120 KB ok, correct split
20 Correct 4 ms 5120 KB ok, correct split
21 Correct 5 ms 5376 KB ok, correct split
22 Correct 5 ms 5376 KB ok, correct split
23 Correct 5 ms 5376 KB ok, correct split
24 Correct 5 ms 5376 KB ok, correct split
25 Correct 5 ms 5376 KB ok, correct split
26 Correct 5 ms 5248 KB ok, correct split
27 Correct 5 ms 5248 KB ok, correct split
28 Correct 5 ms 5248 KB ok, correct split
29 Correct 4 ms 4992 KB ok, correct split
30 Correct 5 ms 5376 KB ok, correct split
31 Correct 4 ms 5120 KB ok, correct split
32 Correct 3 ms 4992 KB ok, correct split
33 Correct 4 ms 4992 KB ok, correct split
34 Correct 5 ms 5248 KB ok, correct split
35 Correct 6 ms 5248 KB ok, correct split
36 Correct 5 ms 5248 KB ok, correct split
37 Correct 6 ms 5376 KB ok, correct split
38 Correct 6 ms 5376 KB ok, correct split
39 Correct 6 ms 5376 KB ok, correct split
40 Correct 5 ms 5376 KB ok, correct split
41 Correct 4 ms 5120 KB ok, correct split
42 Correct 5 ms 5120 KB ok, correct split
43 Correct 6 ms 5376 KB ok, correct split
44 Correct 6 ms 5376 KB ok, correct split
45 Correct 7 ms 5376 KB ok, correct split
46 Correct 5 ms 5376 KB ok, correct split
47 Correct 5 ms 5376 KB ok, no valid answer
48 Correct 6 ms 5248 KB ok, correct split
49 Correct 5 ms 5504 KB ok, correct split
50 Correct 3 ms 4992 KB ok, no valid answer
51 Correct 3 ms 4992 KB ok, no valid answer
52 Correct 6 ms 5248 KB ok, no valid answer
53 Correct 7 ms 5376 KB ok, no valid answer
54 Correct 5 ms 5248 KB ok, no valid answer
55 Correct 5 ms 5376 KB ok, no valid answer
56 Correct 5 ms 5376 KB ok, no valid answer

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB ok, correct split
2 Correct 3 ms 4992 KB ok, correct split
3 Correct 3 ms 4992 KB ok, correct split
4 Correct 3 ms 4992 KB ok, correct split
5 Correct 3 ms 5120 KB ok, correct split
6 Correct 4 ms 5120 KB ok, correct split
7 Correct 134 ms 25720 KB ok, correct split
8 Correct 87 ms 16632 KB ok, correct split
9 Correct 94 ms 19960 KB ok, correct split
10 Correct 119 ms 25972 KB ok, correct split
11 Correct 119 ms 26356 KB ok, correct split
12 Correct 3 ms 4992 KB ok, correct split
13 Correct 3 ms 4992 KB ok, correct split
14 Correct 3 ms 4992 KB ok, correct split
15 Correct 95 ms 11764 KB ok, correct split
16 Correct 78 ms 10968 KB ok, correct split
17 Correct 133 ms 25972 KB ok, correct split
18 Correct 116 ms 22776 KB ok, correct split
19 Correct 118 ms 13600 KB ok, correct split
20 Correct 74 ms 12536 KB ok, correct split
21 Correct 65 ms 13036 KB ok, correct split
22 Correct 62 ms 13000 KB ok, correct split
23 Correct 64 ms 13036 KB ok, correct split
24 Correct 3 ms 4992 KB ok, correct split
25 Correct 117 ms 14092 KB ok, correct split
26 Correct 28 ms 8060 KB ok, correct split
27 Correct 4 ms 4992 KB ok, correct split
28 Correct 120 ms 17528 KB ok, correct split
29 Correct 100 ms 16504 KB ok, correct split
30 Correct 114 ms 17916 KB ok, correct split
31 Correct 114 ms 20340 KB ok, correct split
32 Correct 116 ms 18296 KB ok, correct split
33 Correct 28 ms 8184 KB ok, no valid answer
34 Correct 42 ms 9464 KB ok, no valid answer
35 Correct 79 ms 13552 KB ok, no valid answer
36 Correct 93 ms 13940 KB ok, no valid answer
37 Correct 65 ms 13292 KB ok, no valid answer
38 Correct 3 ms 4992 KB ok, correct split
39 Correct 3 ms 5024 KB ok, no valid answer
40 Correct 3 ms 4992 KB ok, correct split
41 Correct 3 ms 4992 KB ok, correct split
42 Correct 3 ms 4992 KB ok, correct split
43 Correct 3 ms 4992 KB ok, correct split
44 Correct 3 ms 4992 KB ok, correct split
45 Correct 3 ms 4992 KB ok, correct split
46 Correct 6 ms 5376 KB ok, correct split
47 Correct 5 ms 5248 KB ok, correct split
48 Correct 3 ms 4992 KB ok, correct split
49 Correct 6 ms 5376 KB ok, correct split
50 Correct 3 ms 4992 KB ok, correct split
51 Correct 3 ms 4992 KB ok, correct split
52 Correct 3 ms 4992 KB ok, correct split
53 Correct 3 ms 5024 KB ok, correct split
54 Correct 3 ms 4992 KB ok, correct split
55 Correct 3 ms 4992 KB ok, correct split
56 Correct 4 ms 5120 KB ok, correct split
57 Correct 4 ms 5120 KB ok, correct split
58 Correct 5 ms 5376 KB ok, correct split
59 Correct 5 ms 5376 KB ok, correct split
60 Correct 5 ms 5376 KB ok, correct split
61 Correct 5 ms 5376 KB ok, correct split
62 Correct 5 ms 5376 KB ok, correct split
63 Correct 5 ms 5248 KB ok, correct split
64 Correct 5 ms 5248 KB ok, correct split
65 Correct 5 ms 5248 KB ok, correct split
66 Correct 4 ms 4992 KB ok, correct split
67 Correct 5 ms 5376 KB ok, correct split
68 Correct 4 ms 5120 KB ok, correct split
69 Correct 3 ms 4992 KB ok, correct split
70 Correct 4 ms 4992 KB ok, correct split
71 Correct 5 ms 5248 KB ok, correct split
72 Correct 6 ms 5248 KB ok, correct split
73 Correct 5 ms 5248 KB ok, correct split
74 Correct 6 ms 5376 KB ok, correct split
75 Correct 6 ms 5376 KB ok, correct split
76 Correct 6 ms 5376 KB ok, correct split
77 Correct 5 ms 5376 KB ok, correct split
78 Correct 4 ms 5120 KB ok, correct split
79 Correct 5 ms 5120 KB ok, correct split
80 Correct 6 ms 5376 KB ok, correct split
81 Correct 6 ms 5376 KB ok, correct split
82 Correct 7 ms 5376 KB ok, correct split
83 Correct 5 ms 5376 KB ok, correct split
84 Correct 5 ms 5376 KB ok, no valid answer
85 Correct 6 ms 5248 KB ok, correct split
86 Correct 5 ms 5504 KB ok, correct split
87 Correct 3 ms 4992 KB ok, no valid answer
88 Correct 3 ms 4992 KB ok, no valid answer
89 Correct 6 ms 5248 KB ok, no valid answer
90 Correct 7 ms 5376 KB ok, no valid answer
91 Correct 5 ms 5248 KB ok, no valid answer
92 Correct 5 ms 5376 KB ok, no valid answer
93 Correct 5 ms 5376 KB ok, no valid answer
94 Correct 141 ms 19576 KB ok, correct split
95 Correct 185 ms 25948 KB ok, correct split
96 Correct 163 ms 23928 KB ok, correct split
97 Correct 29 ms 8064 KB ok, correct split
98 Correct 32 ms 8568 KB ok, correct split
99 Correct 60 ms 12152 KB ok, correct split
100 Correct 119 ms 17672 KB ok, correct split
101 Correct 108 ms 16648 KB ok, correct split
102 Correct 104 ms 16748 KB ok, correct split
103 Correct 95 ms 15980 KB ok, correct split
104 Correct 123 ms 18144 KB ok, correct split
105 Correct 57 ms 11512 KB ok, correct split
106 Correct 127 ms 17892 KB ok, correct split
107 Correct 106 ms 15472 KB ok, correct split
108 Correct 115 ms 15480 KB ok, correct split
109 Correct 167 ms 18908 KB ok, correct split
110 Correct 166 ms 19792 KB ok, correct split
111 Correct 151 ms 19952 KB ok, correct split
112 Correct 152 ms 18800 KB ok, correct split
113 Correct 150 ms 18804 KB ok, correct split
114 Correct 16 ms 6912 KB ok, correct split
115 Correct 15 ms 6656 KB ok, correct split
116 Correct 147 ms 19824 KB ok, correct split
117 Correct 162 ms 19696 KB ok, correct split
118 Correct 112 ms 16120 KB ok, correct split
119 Correct 81 ms 13688 KB ok, correct split
120 Correct 112 ms 20980 KB ok, correct split
121 Correct 109 ms 15316 KB ok, no valid answer
122 Correct 112 ms 14964 KB ok, no valid answer
123 Correct 168 ms 19572 KB ok, no valid answer
124 Correct 167 ms 19316 KB ok, no valid answer
125 Correct 93 ms 15980 KB ok, no valid answer
126 Correct 57 ms 13676 KB ok, no valid answer
127 Correct 113 ms 17028 KB ok, no valid answer