oj.uz

Submission #622416

# Submission time Handle Problem Language Result Execution time Memory
622416 2022-08-04T09:09:37 Z happypotato Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 215 ms 28056 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define ff first
#define ss second
#define pb push_back
//
const int mxN = 1001;
vector<vector<int>> paths;
int n;
bool vis[mxN];
void resetvis() {
    for (int i = 0; i < n; i++) vis[i] = false;
}
vector<vector<int>> components;
vector<int> curcomponent;
void dfs(int u, int tar) {
    curcomponent.pb(u);
    vis[u] = true;
    for (int v = 0; v < n; v++) {
        if (u != v && 1 <= paths[u][v] && paths[u][v] <= tar && !vis[v]) {
            dfs(v, tar);
        }
    }
}
int rep[mxN];
int repcnt = 1;
bool fullsol() {
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (paths[i][j] == 3) return false;
        }
    }
    for (int i = 0; i < n; i++) {
        if (!vis[i]) {
            dfs(i, 2);
            for (int &x : curcomponent) rep[x] = repcnt;
            repcnt++;
            components.pb(curcomponent);
            curcomponent.clear();
        }
    }
    for (int u = 0; u < n; u++) {
        for (int v = 0; v < n; v++) {
            if (rep[u] == rep[v] && paths[u][v] == 0) return false;
            if (rep[u] != rep[v] && paths[u][v] != 0) return false;
        }
    }
    for (int i = 0; i < n; i++) rep[i] = 0;
    repcnt = 1;
    resetvis();
    vector<vector<int>> ans(n);
    for (int i = 0; i < n; i++) ans[i].resize(n, 0);
    vector<vector<int>> decomp;
    for (vector<int> &cur : components) {
        decomp.clear();
        for (int &u : cur) {
            for (int &v : cur) {
                if (u == v) continue;
                if (!vis[u] && paths[u][v] == 1) {
                    dfs(u, 1);
                    for (int &x : curcomponent) rep[x] = repcnt;
                    repcnt++;
                    decomp.pb(curcomponent);
                    curcomponent.clear();
                    break;
                }
            }
            if (!vis[u]) {
                decomp.pb({u});
                rep[u] = repcnt++;
                vis[u] = true;
            }
        }
        // cerr << "debug rep: ";
        // for (int i = 0; i < n; i++) cerr << rep[i] << ' ';
        // cerr << endl;
        for (int &u : cur) {
            for (int &v : cur) {
                if (paths[u][v] != 1 + (rep[u] != rep[v])) return false;
            }
        }
        for (vector<int> &process : decomp) {
            if (process.size() >= 2) {
                for (int i = 1; i < int(process.size()); i++) {
                    ans[process[i - 1]][process[i]] = 1;
                }
            }
        }
        if (decomp.size() >= 3) {
            for (int i = 1; i < int(decomp.size()); i++) {
                ans[decomp[i - 1][0]][decomp[i][0]] = 1;
            }
            ans[decomp.front()[0]][decomp.back()[0]] = 1;
        } else if (decomp.size() == 2) return false;
    }
    for (int u = 0; u < n; u++) {
        for (int v = 0; v < n; v++) {
            ans[u][v] |= ans[v][u];
            ans[v][u] |= ans[u][v];
        }
    }
    build(ans);
    return true;
}
int construct(vector<vector<int>> p) {
    n = p.size(); paths = p;
    return fullsol();
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 187 ms 26072 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 187 ms 26072 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1348 KB Output is correct
13 Correct 186 ms 25988 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 92 ms 12180 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 51 ms 6740 KB Output is correct
21 Correct 199 ms 25964 KB Output is correct
22 Correct 196 ms 25996 KB Output is correct
23 Correct 203 ms 25932 KB Output is correct
24 Correct 212 ms 26140 KB Output is correct
25 Correct 76 ms 12052 KB Output is correct
26 Correct 96 ms 12052 KB Output is correct
27 Correct 194 ms 26000 KB Output is correct
28 Correct 200 ms 26060 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 308 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 11 ms 1420 KB Output is correct
9 Correct 187 ms 27908 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 9 ms 1344 KB Output is correct
13 Correct 185 ms 27948 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 852 KB Output is correct
17 Correct 91 ms 14092 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 50 ms 7156 KB Output is correct
22 Correct 184 ms 27852 KB Output is correct
23 Correct 194 ms 27908 KB Output is correct
24 Correct 188 ms 27956 KB Output is correct
25 Correct 89 ms 18056 KB Output is correct
26 Correct 75 ms 14080 KB Output is correct
27 Correct 181 ms 27912 KB Output is correct
28 Correct 195 ms 28056 KB Output is correct
29 Correct 77 ms 18044 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory 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 52 ms 7256 KB Output is correct
5 Correct 201 ms 27116 KB Output is correct
6 Correct 185 ms 27084 KB Output is correct
7 Correct 215 ms 27068 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 56 ms 7208 KB Output is correct
10 Correct 211 ms 27260 KB Output is correct
11 Correct 198 ms 27104 KB Output is correct
12 Correct 206 ms 27148 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 300 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 51 ms 7160 KB Output is correct
17 Correct 188 ms 27076 KB Output is correct
18 Correct 200 ms 27064 KB Output is correct
19 Correct 197 ms 27072 KB Output is correct
20 Correct 188 ms 27168 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 187 ms 26072 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1348 KB Output is correct
13 Correct 186 ms 25988 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 92 ms 12180 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 51 ms 6740 KB Output is correct
21 Correct 199 ms 25964 KB Output is correct
22 Correct 196 ms 25996 KB Output is correct
23 Correct 203 ms 25932 KB Output is correct
24 Correct 212 ms 26140 KB Output is correct
25 Correct 76 ms 12052 KB Output is correct
26 Correct 96 ms 12052 KB Output is correct
27 Correct 194 ms 26000 KB Output is correct
28 Correct 200 ms 26060 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 308 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 11 ms 1420 KB Output is correct
37 Correct 187 ms 27908 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 304 KB Output is correct
40 Correct 9 ms 1344 KB Output is correct
41 Correct 185 ms 27948 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 91 ms 14092 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 50 ms 7156 KB Output is correct
50 Correct 184 ms 27852 KB Output is correct
51 Correct 194 ms 27908 KB Output is correct
52 Correct 188 ms 27956 KB Output is correct
53 Correct 89 ms 18056 KB Output is correct
54 Correct 75 ms 14080 KB Output is correct
55 Correct 181 ms 27912 KB Output is correct
56 Correct 195 ms 28056 KB Output is correct
57 Correct 77 ms 18044 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 4 ms 852 KB Output is correct
61 Correct 81 ms 14128 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 300 KB Output is correct
64 Correct 1 ms 308 KB Output is correct
65 Correct 51 ms 7184 KB Output is correct
66 Correct 72 ms 14076 KB Output is correct
67 Correct 70 ms 14028 KB Output is correct
68 Correct 76 ms 14072 KB Output is correct
69 Correct 96 ms 18044 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 8 ms 1364 KB Output is correct
7 Correct 187 ms 26072 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 8 ms 1348 KB Output is correct
13 Correct 186 ms 25988 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 724 KB Output is correct
17 Correct 92 ms 12180 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 51 ms 6740 KB Output is correct
21 Correct 199 ms 25964 KB Output is correct
22 Correct 196 ms 25996 KB Output is correct
23 Correct 203 ms 25932 KB Output is correct
24 Correct 212 ms 26140 KB Output is correct
25 Correct 76 ms 12052 KB Output is correct
26 Correct 96 ms 12052 KB Output is correct
27 Correct 194 ms 26000 KB Output is correct
28 Correct 200 ms 26060 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 0 ms 308 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 11 ms 1420 KB Output is correct
37 Correct 187 ms 27908 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 304 KB Output is correct
40 Correct 9 ms 1344 KB Output is correct
41 Correct 185 ms 27948 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 4 ms 852 KB Output is correct
45 Correct 91 ms 14092 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 300 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 50 ms 7156 KB Output is correct
50 Correct 184 ms 27852 KB Output is correct
51 Correct 194 ms 27908 KB Output is correct
52 Correct 188 ms 27956 KB Output is correct
53 Correct 89 ms 18056 KB Output is correct
54 Correct 75 ms 14080 KB Output is correct
55 Correct 181 ms 27912 KB Output is correct
56 Correct 195 ms 28056 KB Output is correct
57 Correct 77 ms 18044 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 52 ms 7256 KB Output is correct
62 Correct 201 ms 27116 KB Output is correct
63 Correct 185 ms 27084 KB Output is correct
64 Correct 215 ms 27068 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 56 ms 7208 KB Output is correct
67 Correct 211 ms 27260 KB Output is correct
68 Correct 198 ms 27104 KB Output is correct
69 Correct 206 ms 27148 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 1 ms 300 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 51 ms 7160 KB Output is correct
74 Correct 188 ms 27076 KB Output is correct
75 Correct 200 ms 27064 KB Output is correct
76 Correct 197 ms 27072 KB Output is correct
77 Correct 188 ms 27168 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 212 KB Output is correct
80 Correct 4 ms 852 KB Output is correct
81 Correct 81 ms 14128 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 300 KB Output is correct
84 Correct 1 ms 308 KB Output is correct
85 Correct 51 ms 7184 KB Output is correct
86 Correct 72 ms 14076 KB Output is correct
87 Correct 70 ms 14028 KB Output is correct
88 Correct 76 ms 14072 KB Output is correct
89 Correct 96 ms 18044 KB Output is correct
90 Correct 0 ms 212 KB Output is correct
91 Correct 1 ms 304 KB Output is correct
92 Correct 6 ms 852 KB Output is correct
93 Correct 75 ms 14076 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 18 ms 3668 KB Output is correct
98 Correct 72 ms 14076 KB Output is correct
99 Correct 86 ms 14080 KB Output is correct
100 Correct 68 ms 14072 KB Output is correct
101 Correct 68 ms 14084 KB Output is correct
102 Correct 73 ms 14004 KB Output is correct
103 Correct 72 ms 14076 KB Output is correct
104 Correct 74 ms 14084 KB Output is correct
105 Correct 78 ms 14004 KB Output is correct