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Submission #301786

# Submission time Handle Problem Language Result Execution time Memory
301786 2020-09-18T08:04:25 Z Pro100Yan Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 271 ms 22136 KB 
#include "supertrees.h"
#include <vector>
#include <iostream>
#define ll long long
#define pb push_back

using namespace std;
const int N = 20005;
vector<vector<int>> ans;
int d[N];

int get_parent(int v){
    if(v == d[v])
      	return v;
    return d[v] = get_parent(d[v]);
}

void add(int u, int v){
    int f = get_parent(u), s = get_parent(v);
    if(f != s)
        d[f] = d[s];
}



int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	int fault = 0;
	for(int i = 0; i < n; i++)
        d[i] = i;
	for (int i = 0; i < n; i++) {
		std::vector<int> row;
		row.resize(n);
		ans.push_back(row);
	}

    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            if(p[i][j]){
                add(i, j);
            }
        }
    }
    int pi, pj;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            pi = get_parent(i);
            pj = get_parent(j);
            if(p[i][j]){
                if(pi != pj)
                    return 0;
                if(pi != i)
                    ans[i][pi] = ans[pi][i] = 1;
                if(pi != j)
                ans[j][pi] = ans[pi][j] = 1;
            }
            else{
                if(pi == pj)
                    return 0;
            }
        }
        
    }

	build(ans);
	return 1;
}
/*
5
1 0 0 1 1
0 1 1 0 0
0 1 1 0 0
1 0 0 1 1
1 0 0 1 1
*/

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:29:6: warning: unused variable 'fault' [-Wunused-variable]
   29 |  int fault = 0;
      |      ^~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 266 ms 22136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 266 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 241 ms 22136 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 120 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 5752 KB Output is correct
21 Correct 253 ms 22136 KB Output is correct
22 Correct 243 ms 22136 KB Output is correct
23 Correct 269 ms 22136 KB Output is correct
24 Correct 248 ms 22136 KB Output is correct
25 Correct 105 ms 12152 KB Output is correct
26 Correct 103 ms 12152 KB Output is correct
27 Correct 271 ms 22136 KB Output is correct
28 Correct 241 ms 22136 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Incorrect 1 ms 256 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 1 ms 256 KB Output is correct
2 Incorrect 1 ms 256 KB Too few ways to get from 0 to 1, should be 2 found 1
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 266 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 241 ms 22136 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 120 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 5752 KB Output is correct
21 Correct 253 ms 22136 KB Output is correct
22 Correct 243 ms 22136 KB Output is correct
23 Correct 269 ms 22136 KB Output is correct
24 Correct 248 ms 22136 KB Output is correct
25 Correct 105 ms 12152 KB Output is correct
26 Correct 103 ms 12152 KB Output is correct
27 Correct 271 ms 22136 KB Output is correct
28 Correct 241 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Incorrect 1 ms 256 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 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1280 KB Output is correct
7 Correct 266 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1152 KB Output is correct
13 Correct 241 ms 22136 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 120 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 5752 KB Output is correct
21 Correct 253 ms 22136 KB Output is correct
22 Correct 243 ms 22136 KB Output is correct
23 Correct 269 ms 22136 KB Output is correct
24 Correct 248 ms 22136 KB Output is correct
25 Correct 105 ms 12152 KB Output is correct
26 Correct 103 ms 12152 KB Output is correct
27 Correct 271 ms 22136 KB Output is correct
28 Correct 241 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -