oj.uz

Submission #1062255

# Submission time Handle Problem Language Result Execution time Memory
1062255 2024-08-16T22:51:50 Z wood Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 192 ms 24144 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int,int> p32;
typedef pair<ll,ll> p64;
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define vi vector<int>
#define vp32 vector<p32>
#define fast_cin() ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define MOD %1000000007
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template <class T>
using Tree =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
//never guess
//never debug without reviewing code
//never try adding ones or substracting them
//only step by step debug when necessay



int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
    vector<vi> res(n,vi(n));
    int leader[n]; for(int i = 0; i<n; i++) leader[i] = i;
    bool done[n]; memset(done,0,sizeof done);
    for(int i = 0; i<n; i++){
        if(done[i])continue;
        done[i] = true;
        set<int> zeros, ones, twos;
        for(int j = 0; j<n; j++){
            if(p[i][j]==0) zeros.insert(j);
            else if(p[i][j]==1){
              ones.insert(j);
              done[j] = true;
            }
            else twos.insert(j);
        }
        for(int x : ones){
            for(int j = 0; j<n; j++)
                if((p[x][j]==0&&!zeros.count(j))||(p[x][j]==1&&!ones.count(j))||(p[x][j]==2&&!twos.count(j))) return 0;
        }
        vi comp(ones.begin(),ones.end());
        for(int j = 0; j<comp.size()-1; j++){
            int a = comp[j], b = comp[j+1];
            res[a][b] = res[b][a] = 1;
            leader[b] = i;
        }
    }
    memset(done,0,sizeof done);
    for(int ii = 0; ii<n; ii++){
        int i = leader[ii];
        if(done[i]) continue;
        done[i] = true;
        set<int> t = {i};
        for(int j = 0; j<n; j++){
            if(p[i][j]==2) t.insert(j);
        }
        if(t.size()==2) return 0;
        if(t.size()<=1) continue;
        for(int x : t){
            for(int k = 0; k<n; k++){
                int j = leader[k];
                if((p[i][j]==2&&!t.count(j))||(p[i][j]==0&&t.count(j))) return 0;
                done[j] = true;
            }
        }
        vi comp(t.begin(),t.end());
        for(int j = 0; j<comp.size()-1; j++){
            int a = comp[j], b = comp[j+1];
            res[a][b] = res[b][a] = 1;
        }
        int a = comp[0], b = comp[comp.size()-1];
        res[a][b] = res[b][a] = 1;
    }
    build(res);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:50:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         for(int j = 0; j<comp.size()-1; j++){
      |                        ~^~~~~~~~~~~~~~
supertrees.cpp:67:17: warning: unused variable 'x' [-Wunused-variable]
   67 |         for(int x : t){
      |                 ^
supertrees.cpp:75:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         for(int j = 0; j<comp.size()-1; j++){
      |                        ~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1116 KB Output is correct
7 Correct 141 ms 22020 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1116 KB Output is correct
7 Correct 141 ms 22020 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 169 ms 22100 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 55 ms 12308 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 41 ms 5712 KB Output is correct
21 Correct 151 ms 22356 KB Output is correct
22 Correct 147 ms 22096 KB Output is correct
23 Correct 134 ms 22024 KB Output is correct
24 Correct 170 ms 22100 KB Output is correct
25 Correct 58 ms 12112 KB Output is correct
26 Correct 53 ms 12116 KB Output is correct
27 Correct 130 ms 22036 KB Output is correct
28 Correct 172 ms 22028 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 408 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1372 KB Output is correct
9 Correct 180 ms 23852 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 8 ms 1372 KB Output is correct
13 Correct 192 ms 23928 KB Output is correct
14 Incorrect 1 ms 344 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 32 ms 6224 KB Output is correct
5 Correct 121 ms 24056 KB Output is correct
6 Correct 147 ms 23928 KB Output is correct
7 Correct 127 ms 24144 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 43 ms 6228 KB Too few ways to get from 1 to 17, should be 2 found 0
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1116 KB Output is correct
7 Correct 141 ms 22020 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 169 ms 22100 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 55 ms 12308 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 41 ms 5712 KB Output is correct
21 Correct 151 ms 22356 KB Output is correct
22 Correct 147 ms 22096 KB Output is correct
23 Correct 134 ms 22024 KB Output is correct
24 Correct 170 ms 22100 KB Output is correct
25 Correct 58 ms 12112 KB Output is correct
26 Correct 53 ms 12116 KB Output is correct
27 Correct 130 ms 22036 KB Output is correct
28 Correct 172 ms 22028 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 408 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 180 ms 23852 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 8 ms 1372 KB Output is correct
41 Correct 192 ms 23928 KB Output is correct
42 Incorrect 1 ms 344 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1116 KB Output is correct
7 Correct 141 ms 22020 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 7 ms 1116 KB Output is correct
13 Correct 169 ms 22100 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 860 KB Output is correct
17 Correct 55 ms 12308 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 41 ms 5712 KB Output is correct
21 Correct 151 ms 22356 KB Output is correct
22 Correct 147 ms 22096 KB Output is correct
23 Correct 134 ms 22024 KB Output is correct
24 Correct 170 ms 22100 KB Output is correct
25 Correct 58 ms 12112 KB Output is correct
26 Correct 53 ms 12116 KB Output is correct
27 Correct 130 ms 22036 KB Output is correct
28 Correct 172 ms 22028 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 408 KB Output is correct
34 Correct 0 ms 344 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 7 ms 1372 KB Output is correct
37 Correct 180 ms 23852 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 344 KB Output is correct
40 Correct 8 ms 1372 KB Output is correct
41 Correct 192 ms 23928 KB Output is correct
42 Incorrect 1 ms 344 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -