oj.uz

Submission #1062252

# Submission time Handle Problem Language Result Execution time Memory
1062252 2024-08-16T22:43:57 Z wood Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 223 ms 22100 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;
        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 j = 0; j<n; j++){
                if((p[i][j]==2&&!t.count(j))||(p[i][j]==0&&t.count(j))) return 0;
            }
        }
        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[n-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:73:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for(int j = 0; j<comp.size()-1; j++){
      |                        ~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 5 ms 1296 KB Output is correct
7 Correct 126 ms 22008 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 5 ms 1296 KB Output is correct
7 Correct 126 ms 22008 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 416 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 9 ms 1276 KB Output is correct
13 Correct 223 ms 22036 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 53 ms 12308 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 33 ms 5716 KB Output is correct
21 Correct 125 ms 22044 KB Output is correct
22 Correct 138 ms 22044 KB Output is correct
23 Correct 133 ms 22096 KB Output is correct
24 Correct 169 ms 22020 KB Output is correct
25 Correct 55 ms 12116 KB Output is correct
26 Correct 52 ms 12116 KB Output is correct
27 Correct 126 ms 22100 KB Output is correct
28 Correct 212 ms 22024 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
5 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 Incorrect 1 ms 348 KB Answer gives possible 0 while actual possible 1
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 5 ms 1296 KB Output is correct
7 Correct 126 ms 22008 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 416 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 9 ms 1276 KB Output is correct
13 Correct 223 ms 22036 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 53 ms 12308 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 33 ms 5716 KB Output is correct
21 Correct 125 ms 22044 KB Output is correct
22 Correct 138 ms 22044 KB Output is correct
23 Correct 133 ms 22096 KB Output is correct
24 Correct 169 ms 22020 KB Output is correct
25 Correct 55 ms 12116 KB Output is correct
26 Correct 52 ms 12116 KB Output is correct
27 Correct 126 ms 22100 KB Output is correct
28 Correct 212 ms 22024 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 348 KB Output is correct
6 Correct 5 ms 1296 KB Output is correct
7 Correct 126 ms 22008 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 416 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 9 ms 1276 KB Output is correct
13 Correct 223 ms 22036 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 53 ms 12308 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 33 ms 5716 KB Output is correct
21 Correct 125 ms 22044 KB Output is correct
22 Correct 138 ms 22044 KB Output is correct
23 Correct 133 ms 22096 KB Output is correct
24 Correct 169 ms 22020 KB Output is correct
25 Correct 55 ms 12116 KB Output is correct
26 Correct 52 ms 12116 KB Output is correct
27 Correct 126 ms 22100 KB Output is correct
28 Correct 212 ms 22024 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -