oj.uz

Submission #963794

# Submission time Handle Problem Language Result Execution time Memory
963794 2024-04-15T16:57:09 Z SuPythony Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 192 ms 24144 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;

class DSU {
    vector<int> par;
    vector<int> siz;

public:
    DSU(int n) {
        par.resize(n);
        iota(par.begin(),par.end(),0);
        siz.assign(n,1);
    }
    
    int find_set(int u) {
        if (par[u]==u) return u;
        return par[u]=find_set(par[u]);
    }
    
    bool is_same(int u, int v) {
        return find_set(u)==find_set(v);
    }
    
    bool unite_set(int u, int v) {
        u=find_set(u);
        v=find_set(v);
        if (u==v) return false;
        if (siz[u]<siz[v]) swap(u,v);
        par[v]=u;
        siz[u]+=siz[v];
        return true;
    }
};

int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> ans(n,vector<int>(n,0));
	DSU dsu=DSU(n);
	for (int i=0; i<n; i++) {
	    for (int j=0; j<n; j++) {
	        if (i==j) continue;
	        if (p[i][j]==1) {
	            if (dsu.unite_set(i,j)) {
	                ans[i][j]=1;
	                ans[j][i]=1;
	            }
	        }
	    }
	}
	for (int i=0; i<n; i++) {
	    for (int j=0; j<n; j++) {
	        if (p[i][j]==0&&dsu.is_same(i,j)) {
	            return 0;
	        }
	    }
	}
	build(ans);
	return 1;
}

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 344 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Correct 8 ms 1372 KB Output is correct
7 Correct 163 ms 23964 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 344 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Correct 8 ms 1372 KB Output is correct
7 Correct 163 ms 23964 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 154 ms 24064 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 436 KB Output is correct
16 Correct 3 ms 864 KB Output is correct
17 Correct 77 ms 14080 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 6228 KB Output is correct
21 Correct 160 ms 23908 KB Output is correct
22 Correct 157 ms 24144 KB Output is correct
23 Correct 179 ms 24092 KB Output is correct
24 Correct 170 ms 23944 KB Output is correct
25 Correct 61 ms 14164 KB Output is correct
26 Correct 73 ms 14084 KB Output is correct
27 Correct 174 ms 24060 KB Output is correct
28 Correct 192 ms 23908 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 348 KB Output is correct
3 Correct 1 ms 348 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 Too few ways to get from 0 to 1, should be 2 found 0
3 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 344 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Correct 8 ms 1372 KB Output is correct
7 Correct 163 ms 23964 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 154 ms 24064 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 436 KB Output is correct
16 Correct 3 ms 864 KB Output is correct
17 Correct 77 ms 14080 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 6228 KB Output is correct
21 Correct 160 ms 23908 KB Output is correct
22 Correct 157 ms 24144 KB Output is correct
23 Correct 179 ms 24092 KB Output is correct
24 Correct 170 ms 23944 KB Output is correct
25 Correct 61 ms 14164 KB Output is correct
26 Correct 73 ms 14084 KB Output is correct
27 Correct 174 ms 24060 KB Output is correct
28 Correct 192 ms 23908 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 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 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 600 KB Output is correct
6 Correct 8 ms 1372 KB Output is correct
7 Correct 163 ms 23964 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 154 ms 24064 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 436 KB Output is correct
16 Correct 3 ms 864 KB Output is correct
17 Correct 77 ms 14080 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 39 ms 6228 KB Output is correct
21 Correct 160 ms 23908 KB Output is correct
22 Correct 157 ms 24144 KB Output is correct
23 Correct 179 ms 24092 KB Output is correct
24 Correct 170 ms 23944 KB Output is correct
25 Correct 61 ms 14164 KB Output is correct
26 Correct 73 ms 14084 KB Output is correct
27 Correct 174 ms 24060 KB Output is correct
28 Correct 192 ms 23908 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -