oj.uz

Submission #650334

# Submission time Handle Problem Language Result Execution time Memory
650334 2022-10-13T13:49:19 Z esomer Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 229 ms 22124 KB 
#include <bits/stdc++.h>
#include "supertrees.h"

using namespace std;

#define ll long long
#define endl "\n"

const int MOD = 998244353;
/*
int n2;
std::vector<std::vector<int>> p;
std::vector<std::vector<int>> b;
bool called = false;

static void check(bool cond, std::string message) {
    if (!cond) {
        cout << message << endl;
        exit(0);
    }
}

void build(std::vector<std::vector<int>> _b) {
    check(!called, "build is called more than once");
    called = true;
    check((int)_b.size() == n2, "Invalid number of rows in b");
    for (int i = 0; i < n2; i++) {
        check((int)_b[i].size() == n2, "Invalid number of columns in b");
    }
    b = _b;
}*/

void DFS(int x, vector<int>& num, int curr, int type, vector<vector<int>>& edges){
    if(curr == (int)num.size() - 1){
        if(type == 1) return;
        else{
            edges[num[curr]][x] = 1;
            edges[x][num[curr]] = 1;
            return;
        }
    }
    edges[num[curr]][num[curr + 1]] = 1;
    edges[num[curr + 1]][num[curr]] = 1;
    DFS(x, num, curr + 1, type, edges);
}

int construct(vector<vector<int>> v){
    int n = (int)v[0].size();
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            if(v[i][j] == 3) return 0;
        }
    }
    vector<bool> done(n, 0);
    vector<vector<int>> edges(n, vector<int> (n, 0));
    for(int i = 0; i < n; i++){
        if(done[i]) continue;
        vector<int> two;
        vector<int> one = {i};
        set<int> cc;
        cc.insert(i);
        done[i] = 1;
        for(int j = 0; j < n; j++){
            if(i == j) continue;
            if(v[i][j] == 1) {one.push_back(j); cc.insert(j);}
            else if(v[i][j] == 2) {two.push_back(j); cc.insert(j);}
        }
        for(int x : two){
            done[x] = 1;
            for(int j = 0; j < n; j++){
                if(x == j) continue;
                bool good = cc.count(j);
                if(good == false && v[x][j] > 0) return 0;
                if(good == true && v[x][j] == 0) return 0;
            }
        }
        for(int x : one){
            done[x] = 1;
            for(int j = 0; j < n; j++){
                if(x == j) continue;
                bool good = cc.count(j);
                if(good == false && v[x][j] > 0) return 0;
                if(good == true && v[x][j] != max(v[i][j], v[i][x])) return 0;
            }
        }
        if(two.size() == 0){
            DFS(i, one, 0, 1, edges);
        }else{
            vector<vector<int>> circle;
            circle.push_back(one);
            vector<bool> assigned(two.size(), 0);
            for(int j = 0; j < two.size(); j++){
                if(assigned[j]) continue;
                assigned[j] = 1;
                one.resize(0);
                one.push_back(two[j]);
                for(int q = 0; q < two.size(); q++){
                    if(q == j) continue;
                    if(v[two[j]][two[q]] == 1){
                        if(assigned[q]) return 0;
                        assigned[q] = 1;
                        one.push_back(two[q]);
                    }
                }
                circle.push_back(one);
            }
            if((int)circle.size() < 3) return 0;
            for(auto t : circle){
                DFS(i, t, 0, 1, edges);
            }
            int sz = (int)circle.size();
            for(int j = 0; j < sz; j++){
                edges[circle[j][0]][circle[(j + 1) % sz][0]] = 1;
                edges[circle[(j + 1) % sz][0]][circle[j][0]] = 1;
            }
        }
    }
    build(edges);
    return 1;
}
/*
int main() {
    cin >> n2;

    p.resize(n2);
    for (int i = 0; i < n2; i++) {
        p[i].resize(n2);
    }

    for (int i = 0; i < n2; i++) {
        for (int j = 0; j < n2; j++) {
            cin >> p[i][j];
        }
    }

    int possible = construct(p);

    check(possible == 0 || possible == 1, "Invalid return value of construct");
    if (possible == 1) {
        check(called, "construct returned 1 without calling build");
    } else {
        check(!called, "construct called build but returned 0");
    }

    cout << possible << endl;
    if (possible == 1) {
        for (int i = 0; i < n2; i++) {
            for (int j = 0; j < n2; j++) {
                if (j) {
                    cout << " ";
                }
                cout << b[i][j];
            }
            printf("\n");
        }
    }
}*/

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:92:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |             for(int j = 0; j < two.size(); j++){
      |                            ~~^~~~~~~~~~~~
supertrees.cpp:97:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |                 for(int q = 0; q < two.size(); q++){
      |                                ~~^~~~~~~~~~~~

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 1108 KB Output is correct
7 Correct 213 ms 22020 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 1108 KB Output is correct
7 Correct 213 ms 22020 KB Output is correct
8 Correct 0 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 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 183 ms 22020 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 79 ms 12220 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 50 ms 5756 KB Output is correct
21 Correct 209 ms 22092 KB Output is correct
22 Correct 174 ms 22032 KB Output is correct
23 Correct 229 ms 22028 KB Output is correct
24 Correct 181 ms 22020 KB Output is correct
25 Correct 74 ms 12048 KB Output is correct
26 Correct 108 ms 12044 KB Output is correct
27 Correct 206 ms 22032 KB Output is correct
28 Correct 174 ms 22040 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 8 ms 1148 KB Output is correct
9 Correct 179 ms 21964 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 11 ms 1108 KB Output is correct
13 Correct 208 ms 22016 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 6 ms 712 KB Output is correct
17 Correct 79 ms 12172 KB Output is correct
18 Correct 1 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 67 ms 5708 KB Output is correct
22 Correct 184 ms 22032 KB Output is correct
23 Correct 177 ms 22012 KB Output is correct
24 Correct 201 ms 22024 KB Output is correct
25 Correct 70 ms 12080 KB Output is correct
26 Correct 69 ms 12032 KB Output is correct
27 Correct 172 ms 21964 KB Output is correct
28 Correct 225 ms 22092 KB Output is correct
29 Correct 70 ms 12044 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 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 51 ms 5696 KB Output is correct
5 Correct 197 ms 22036 KB Output is correct
6 Correct 186 ms 22068 KB Output is correct
7 Correct 208 ms 22028 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 59 ms 5708 KB Output is correct
10 Correct 225 ms 22000 KB Output is correct
11 Correct 178 ms 22028 KB Output is correct
12 Correct 225 ms 22124 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 60 ms 5768 KB Output is correct
17 Correct 197 ms 22020 KB Output is correct
18 Correct 182 ms 22028 KB Output is correct
19 Correct 199 ms 22092 KB Output is correct
20 Correct 179 ms 21996 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 1108 KB Output is correct
7 Correct 213 ms 22020 KB Output is correct
8 Correct 0 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 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 183 ms 22020 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 79 ms 12220 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 50 ms 5756 KB Output is correct
21 Correct 209 ms 22092 KB Output is correct
22 Correct 174 ms 22032 KB Output is correct
23 Correct 229 ms 22028 KB Output is correct
24 Correct 181 ms 22020 KB Output is correct
25 Correct 74 ms 12048 KB Output is correct
26 Correct 108 ms 12044 KB Output is correct
27 Correct 206 ms 22032 KB Output is correct
28 Correct 174 ms 22040 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 8 ms 1148 KB Output is correct
37 Correct 179 ms 21964 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 11 ms 1108 KB Output is correct
41 Correct 208 ms 22016 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 6 ms 712 KB Output is correct
45 Correct 79 ms 12172 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 67 ms 5708 KB Output is correct
50 Correct 184 ms 22032 KB Output is correct
51 Correct 177 ms 22012 KB Output is correct
52 Correct 201 ms 22024 KB Output is correct
53 Correct 70 ms 12080 KB Output is correct
54 Correct 69 ms 12032 KB Output is correct
55 Correct 172 ms 21964 KB Output is correct
56 Correct 225 ms 22092 KB Output is correct
57 Correct 70 ms 12044 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 724 KB Output is correct
61 Correct 81 ms 12048 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 49 ms 5716 KB Output is correct
66 Correct 83 ms 14068 KB Output is correct
67 Correct 79 ms 14076 KB Output is correct
68 Correct 79 ms 14068 KB Output is correct
69 Correct 78 ms 14072 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 1108 KB Output is correct
7 Correct 213 ms 22020 KB Output is correct
8 Correct 0 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 0 ms 212 KB Output is correct
12 Correct 8 ms 1108 KB Output is correct
13 Correct 183 ms 22020 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 79 ms 12220 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 50 ms 5756 KB Output is correct
21 Correct 209 ms 22092 KB Output is correct
22 Correct 174 ms 22032 KB Output is correct
23 Correct 229 ms 22028 KB Output is correct
24 Correct 181 ms 22020 KB Output is correct
25 Correct 74 ms 12048 KB Output is correct
26 Correct 108 ms 12044 KB Output is correct
27 Correct 206 ms 22032 KB Output is correct
28 Correct 174 ms 22040 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 8 ms 1148 KB Output is correct
37 Correct 179 ms 21964 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 11 ms 1108 KB Output is correct
41 Correct 208 ms 22016 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 6 ms 712 KB Output is correct
45 Correct 79 ms 12172 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 67 ms 5708 KB Output is correct
50 Correct 184 ms 22032 KB Output is correct
51 Correct 177 ms 22012 KB Output is correct
52 Correct 201 ms 22024 KB Output is correct
53 Correct 70 ms 12080 KB Output is correct
54 Correct 69 ms 12032 KB Output is correct
55 Correct 172 ms 21964 KB Output is correct
56 Correct 225 ms 22092 KB Output is correct
57 Correct 70 ms 12044 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 51 ms 5696 KB Output is correct
62 Correct 197 ms 22036 KB Output is correct
63 Correct 186 ms 22068 KB Output is correct
64 Correct 208 ms 22028 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 59 ms 5708 KB Output is correct
67 Correct 225 ms 22000 KB Output is correct
68 Correct 178 ms 22028 KB Output is correct
69 Correct 225 ms 22124 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 0 ms 212 KB Output is correct
72 Correct 0 ms 212 KB Output is correct
73 Correct 60 ms 5768 KB Output is correct
74 Correct 197 ms 22020 KB Output is correct
75 Correct 182 ms 22028 KB Output is correct
76 Correct 199 ms 22092 KB Output is correct
77 Correct 179 ms 21996 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 724 KB Output is correct
81 Correct 81 ms 12048 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 49 ms 5716 KB Output is correct
86 Correct 83 ms 14068 KB Output is correct
87 Correct 79 ms 14076 KB Output is correct
88 Correct 79 ms 14068 KB Output is correct
89 Correct 78 ms 14072 KB Output is correct
90 Correct 1 ms 304 KB Output is correct
91 Correct 1 ms 296 KB Output is correct
92 Correct 4 ms 596 KB Output is correct
93 Correct 90 ms 10108 KB Output is correct
94 Correct 1 ms 212 KB Output is correct
95 Correct 1 ms 304 KB Output is correct
96 Correct 1 ms 296 KB Output is correct
97 Correct 19 ms 2680 KB Output is correct
98 Correct 69 ms 10108 KB Output is correct
99 Correct 93 ms 10120 KB Output is correct
100 Correct 79 ms 10112 KB Output is correct
101 Correct 72 ms 10100 KB Output is correct
102 Correct 71 ms 10100 KB Output is correct
103 Correct 73 ms 10060 KB Output is correct
104 Correct 67 ms 10104 KB Output is correct
105 Correct 89 ms 10116 KB Output is correct