oj.uz

Submission #306453

# Submission time Handle Problem Language Result Execution time Memory
306453 2020-09-25T15:28:49 Z giorgikob Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 255 ms 22268 KB 
#include "supertrees.h"
#include <vector>

#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define pb push_back
using namespace std;


const int N = 1e3+5;
vector<int>c[N];
int cnt = 0, n;
int fix[N];
vector<int>chain;

void dfs(int x,vector<vector<int>>&p){
    fix[x] = 1;
    //cout << x << endl;
    c[cnt].pb(x);
    for(int i = 0; i < n; i++){
        if(fix[i]) continue;
        if(p[x][i]){
            dfs(i,p);
        }
    }
}


void dfs1(int x,vector<vector<int>>&p){
    fix[x] = 1;
    //c[cnt].pb(x);
    chain.pb(x);
    //cout << x << endl;
    for(int i = 0; i < n; i++){
        //cout << fix[i] << " ";
        if(fix[i]) continue;
        if(p[x][i] == 1){
            dfs1(i,p);
        }
    }
    //cout << endl;
}

bool check(vector<int>&v, vector<vector<int>>&p){

    for(int i = 0; i < (int)v.size(); i++){
        for(int j = 0; j < (int)v.size(); j++){
            if(p[v[i]][v[j]] == 2){
                return 0;
            }
        }
    }
    return 1;
}

void cr(int x,int y,vector<vector<int>>&v){
    v[x][y] = 1;
    v[y][x] = 1;
}

int construct(std::vector<std::vector<int>> p) {
    n = p.size();
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            if(p[i][j] == 3){
                return 0;
            }
        }
    }
    for(int i = 0; i < n; i++){
        if(fix[i]) continue;
        cnt++;//cout << i << endl;
        dfs(i,p);
    }

    for(int i = 0; i < n; i++) fix[i] = 0;

    for(int i = 1; i <= cnt; i++){
        for(int j = 0; j < c[i].size(); j++){
            for(int t = 0; t < c[i].size(); t++){
                if(p[c[i][j]][c[i][t]] == 0){
                    return 0;
                }
            }
        }
    }

    vector<vector<int>>answer(n,vector<int>(n,0));
    vector<int>cyc;
    for(int i = 1; i <= cnt; i++){
        for(int j = 0; j < c[i].size(); j++){
            int x = c[i][j];
            if(fix[x]) continue;
            chain.clear();
            dfs1(x,p);
            if(check(chain,p) == 0){
                return 0;
            }
            for(int t = 0; t+1 < chain.size(); t++){
                int x = chain[t];
                int y = chain[t+1];
                cr(x,y,answer);
            }
            cyc.pb(chain[0]);
        }
        if(cyc.size() == 2) return 0;
        if(cyc.size() > 1)
        for(int i = 0; i < cyc.size(); i++){
            int x = cyc[i];
            int y = cyc[(i+1)%(int)cyc.size()];
            cr(x,y,answer);
        }

        cyc.clear();
    }

    build(answer);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:81:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |         for(int j = 0; j < c[i].size(); j++){
      |                        ~~^~~~~~~~~~~~~
supertrees.cpp:82:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |             for(int t = 0; t < c[i].size(); t++){
      |                            ~~^~~~~~~~~~~~~
supertrees.cpp:93:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |         for(int j = 0; j < c[i].size(); j++){
      |                        ~~^~~~~~~~~~~~~
supertrees.cpp:101:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  101 |             for(int t = 0; t+1 < chain.size(); t++){
      |                            ~~~~^~~~~~~~~~~~~~
supertrees.cpp:110:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  110 |         for(int i = 0; i < cyc.size(); i++){
      |                        ~~^~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1408 KB Output is correct
7 Correct 238 ms 22140 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1408 KB Output is correct
7 Correct 238 ms 22140 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 241 ms 22140 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 102 ms 8312 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 60 ms 5880 KB Output is correct
21 Correct 243 ms 22152 KB Output is correct
22 Correct 237 ms 22264 KB Output is correct
23 Correct 245 ms 22136 KB Output is correct
24 Correct 236 ms 22136 KB Output is correct
25 Correct 96 ms 8184 KB Output is correct
26 Correct 94 ms 8184 KB Output is correct
27 Correct 255 ms 22136 KB Output is correct
28 Correct 234 ms 22136 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 13 ms 1280 KB Output is correct
9 Correct 250 ms 22264 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 246 ms 22268 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 108 ms 8312 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 60 ms 5880 KB Output is correct
22 Correct 246 ms 22136 KB Output is correct
23 Correct 237 ms 22136 KB Output is correct
24 Correct 238 ms 22136 KB Output is correct
25 Correct 97 ms 12156 KB Output is correct
26 Correct 96 ms 8184 KB Output is correct
27 Correct 242 ms 22132 KB Output is correct
28 Correct 246 ms 22136 KB Output is correct
29 Correct 98 ms 12152 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 59 ms 5880 KB Output is correct
5 Correct 242 ms 22140 KB Output is correct
6 Correct 255 ms 22136 KB Output is correct
7 Correct 254 ms 22136 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 59 ms 5880 KB Output is correct
10 Correct 251 ms 22136 KB Output is correct
11 Correct 236 ms 22136 KB Output is correct
12 Correct 241 ms 22264 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 60 ms 5880 KB Output is correct
17 Correct 235 ms 22136 KB Output is correct
18 Correct 233 ms 22136 KB Output is correct
19 Correct 232 ms 22136 KB Output is correct
20 Correct 232 ms 22136 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1408 KB Output is correct
7 Correct 238 ms 22140 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 241 ms 22140 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 102 ms 8312 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 60 ms 5880 KB Output is correct
21 Correct 243 ms 22152 KB Output is correct
22 Correct 237 ms 22264 KB Output is correct
23 Correct 245 ms 22136 KB Output is correct
24 Correct 236 ms 22136 KB Output is correct
25 Correct 96 ms 8184 KB Output is correct
26 Correct 94 ms 8184 KB Output is correct
27 Correct 255 ms 22136 KB Output is correct
28 Correct 234 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 0 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 13 ms 1280 KB Output is correct
37 Correct 250 ms 22264 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 0 ms 384 KB Output is correct
40 Correct 10 ms 1408 KB Output is correct
41 Correct 246 ms 22268 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 0 ms 384 KB Output is correct
44 Correct 5 ms 640 KB Output is correct
45 Correct 108 ms 8312 KB Output is correct
46 Correct 0 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 60 ms 5880 KB Output is correct
50 Correct 246 ms 22136 KB Output is correct
51 Correct 237 ms 22136 KB Output is correct
52 Correct 238 ms 22136 KB Output is correct
53 Correct 97 ms 12156 KB Output is correct
54 Correct 96 ms 8184 KB Output is correct
55 Correct 242 ms 22132 KB Output is correct
56 Correct 246 ms 22136 KB Output is correct
57 Correct 98 ms 12152 KB Output is correct
58 Correct 0 ms 384 KB Output is correct
59 Correct 0 ms 384 KB Output is correct
60 Correct 5 ms 640 KB Output is correct
61 Correct 101 ms 8344 KB Output is correct
62 Correct 0 ms 384 KB Output is correct
63 Correct 0 ms 384 KB Output is correct
64 Correct 0 ms 384 KB Output is correct
65 Correct 60 ms 5880 KB Output is correct
66 Correct 96 ms 8184 KB Output is correct
67 Correct 98 ms 8184 KB Output is correct
68 Correct 98 ms 8184 KB Output is correct
69 Correct 101 ms 12152 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1408 KB Output is correct
7 Correct 238 ms 22140 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 241 ms 22140 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 640 KB Output is correct
17 Correct 102 ms 8312 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 60 ms 5880 KB Output is correct
21 Correct 243 ms 22152 KB Output is correct
22 Correct 237 ms 22264 KB Output is correct
23 Correct 245 ms 22136 KB Output is correct
24 Correct 236 ms 22136 KB Output is correct
25 Correct 96 ms 8184 KB Output is correct
26 Correct 94 ms 8184 KB Output is correct
27 Correct 255 ms 22136 KB Output is correct
28 Correct 234 ms 22136 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 0 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 13 ms 1280 KB Output is correct
37 Correct 250 ms 22264 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 0 ms 384 KB Output is correct
40 Correct 10 ms 1408 KB Output is correct
41 Correct 246 ms 22268 KB Output is correct
42 Correct 1 ms 384 KB Output is correct
43 Correct 0 ms 384 KB Output is correct
44 Correct 5 ms 640 KB Output is correct
45 Correct 108 ms 8312 KB Output is correct
46 Correct 0 ms 384 KB Output is correct
47 Correct 1 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 60 ms 5880 KB Output is correct
50 Correct 246 ms 22136 KB Output is correct
51 Correct 237 ms 22136 KB Output is correct
52 Correct 238 ms 22136 KB Output is correct
53 Correct 97 ms 12156 KB Output is correct
54 Correct 96 ms 8184 KB Output is correct
55 Correct 242 ms 22132 KB Output is correct
56 Correct 246 ms 22136 KB Output is correct
57 Correct 98 ms 12152 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 0 ms 384 KB Output is correct
60 Correct 0 ms 384 KB Output is correct
61 Correct 59 ms 5880 KB Output is correct
62 Correct 242 ms 22140 KB Output is correct
63 Correct 255 ms 22136 KB Output is correct
64 Correct 254 ms 22136 KB Output is correct
65 Correct 1 ms 384 KB Output is correct
66 Correct 59 ms 5880 KB Output is correct
67 Correct 251 ms 22136 KB Output is correct
68 Correct 236 ms 22136 KB Output is correct
69 Correct 241 ms 22264 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 1 ms 384 KB Output is correct
72 Correct 1 ms 384 KB Output is correct
73 Correct 60 ms 5880 KB Output is correct
74 Correct 235 ms 22136 KB Output is correct
75 Correct 233 ms 22136 KB Output is correct
76 Correct 232 ms 22136 KB Output is correct
77 Correct 232 ms 22136 KB Output is correct
78 Correct 0 ms 384 KB Output is correct
79 Correct 0 ms 384 KB Output is correct
80 Correct 5 ms 640 KB Output is correct
81 Correct 101 ms 8344 KB Output is correct
82 Correct 0 ms 384 KB Output is correct
83 Correct 0 ms 384 KB Output is correct
84 Correct 0 ms 384 KB Output is correct
85 Correct 60 ms 5880 KB Output is correct
86 Correct 96 ms 8184 KB Output is correct
87 Correct 98 ms 8184 KB Output is correct
88 Correct 98 ms 8184 KB Output is correct
89 Correct 101 ms 12152 KB Output is correct
90 Correct 0 ms 384 KB Output is correct
91 Correct 0 ms 384 KB Output is correct
92 Correct 4 ms 640 KB Output is correct
93 Correct 98 ms 8184 KB Output is correct
94 Correct 0 ms 384 KB Output is correct
95 Correct 0 ms 384 KB Output is correct
96 Correct 0 ms 384 KB Output is correct
97 Correct 26 ms 2296 KB Output is correct
98 Correct 99 ms 8184 KB Output is correct
99 Correct 93 ms 8184 KB Output is correct
100 Correct 106 ms 8184 KB Output is correct
101 Correct 93 ms 8184 KB Output is correct
102 Correct 96 ms 8188 KB Output is correct
103 Correct 102 ms 8184 KB Output is correct
104 Correct 105 ms 8184 KB Output is correct
105 Correct 110 ms 8184 KB Output is correct