oj.uz

Submission #371144

# Submission time Handle Problem Language Result Execution time Memory
371144 2021-02-25T23:02:17 Z Ozy Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 275 ms 24300 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define rep(i,a,b) for (int i = (a); i <= (b); i++)
#define debug(a) cout << #a << " " <<  a << endl
#define nl "\n"

lli n,ult,a,b,c,d;
lli padre[1002],grupo[1002],visitados[1002],inicios[1002],finales[1002],cant[1002];
bool res;
vector<lli> cabezas;

void procesa(lli act) {
    if (padre[act] != act) {
        procesa(padre[act]);
        padre[act] = ult;
    }
    else ult = act;
}

void calcula(lli act) {
    if (grupo[act] != act) {
        calcula(grupo[act]);
        grupo[act] = ult;
    }
    else ult = act;
}

int construct(std::vector<std::vector<int>> p) {

	res = true;
	n = p.size();
	vector<vector<int> > puentes(n, vector<int> (n, 0));
    rep(i,0,n-1) padre[i] = i;
    rep(i,0,n-1) grupo[i] = i;

	rep(i,0,n-1) {
        rep(j,i,n-1){
            if (visitados[j] == 1) continue;
            if (i == j) continue;

            if (p[i][j] != p[j][i]) res = false;
            if (p[i][j] == 3) res = false;
            if (res == false) return 0;

            if (p[i][j] == 1) {
                padre[j] = i;
                puentes[i][j] = 1;
                puentes[j][i] = 1;
                visitados[j] = 1;
            }
        }
	}


	rep(i,0,n-1) {

	    if (padre[i] != i) continue;

        rep(j,i,n-1){
            if (i == j) continue;
            if (padre[i] != i) continue;
            if (visitados[j] == 2) continue;


            if (p[i][j] == 2) {
                grupo[j] = i;
                visitados[j]=2;
            }
        }
	}

	rep(i,0,n-1) {
	    rep(j,i,n-1) {
	        if(i == j) continue;

            procesa(i);
            a = ult;
            procesa(j);
            b = ult;

            calcula(a);
            c = ult;
            calcula(b);
            d = ult;


            if (p[i][j] == 0){
                if (a != b && c != d) continue;
                else res = false;
            }
            else if (p[i][j] == 1){
                if (a == b && c == d) continue;
                else res = false;
            }
            else {
                if (a != b && c == d) continue;
                else res = false;
            }

            if (!res) return 0;
	    }
	}

	rep(i,0,n-1) {
        if (padre[i] == i) {

            calcula(i);

            if (cant[ult] == 0) {
                inicios[ult] = i;
                finales[ult] = i;
                cant[ult] = 1;
            }
            else {
                puentes[i][finales[ult]] = 1;
                puentes[finales[ult]][i] = 1;
                //cout << ult << ' ' << finales[ult] << endl;

                finales[ult] = i;
                cant[ult]++;
            }

        }
	}

	rep(i,0,n-1) {
        if (cant[i] == 2) return 0;

        if (cant[i] > 2) {
            puentes[finales[i]][inicios[i]] = 1;
            puentes[inicios[i]][finales[i]] = 1;
        }
	}

	build(puentes);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 251 ms 22140 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 251 ms 22140 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 259 ms 24172 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 115 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 64 ms 6380 KB Output is correct
21 Correct 261 ms 23972 KB Output is correct
22 Correct 257 ms 24044 KB Output is correct
23 Correct 267 ms 24044 KB Output is correct
24 Correct 259 ms 24044 KB Output is correct
25 Correct 120 ms 14164 KB Output is correct
26 Correct 114 ms 14188 KB Output is correct
27 Correct 262 ms 24172 KB Output is correct
28 Correct 266 ms 24044 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 11 ms 1360 KB Output is correct
9 Correct 253 ms 24148 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1388 KB Output is correct
13 Correct 255 ms 24148 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 118 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 65 ms 6308 KB Output is correct
22 Correct 263 ms 24300 KB Output is correct
23 Correct 257 ms 24172 KB Output is correct
24 Correct 265 ms 24044 KB Output is correct
25 Correct 119 ms 14188 KB Output is correct
26 Correct 111 ms 14188 KB Output is correct
27 Correct 256 ms 24044 KB Output is correct
28 Correct 271 ms 24292 KB Output is correct
29 Correct 117 ms 14188 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 64 ms 6300 KB Output is correct
5 Correct 256 ms 24044 KB Output is correct
6 Correct 265 ms 24180 KB Output is correct
7 Correct 266 ms 24156 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 65 ms 6372 KB Output is correct
10 Correct 258 ms 24044 KB Output is correct
11 Correct 261 ms 24172 KB Output is correct
12 Correct 267 ms 24180 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 65 ms 6380 KB Output is correct
17 Correct 258 ms 24300 KB Output is correct
18 Correct 275 ms 24044 KB Output is correct
19 Correct 260 ms 24044 KB Output is correct
20 Correct 255 ms 24156 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 251 ms 22140 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 259 ms 24172 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 115 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 64 ms 6380 KB Output is correct
21 Correct 261 ms 23972 KB Output is correct
22 Correct 257 ms 24044 KB Output is correct
23 Correct 267 ms 24044 KB Output is correct
24 Correct 259 ms 24044 KB Output is correct
25 Correct 120 ms 14164 KB Output is correct
26 Correct 114 ms 14188 KB Output is correct
27 Correct 262 ms 24172 KB Output is correct
28 Correct 266 ms 24044 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 11 ms 1360 KB Output is correct
37 Correct 253 ms 24148 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 11 ms 1388 KB Output is correct
41 Correct 255 ms 24148 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 5 ms 876 KB Output is correct
45 Correct 118 ms 14188 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 65 ms 6308 KB Output is correct
50 Correct 263 ms 24300 KB Output is correct
51 Correct 257 ms 24172 KB Output is correct
52 Correct 265 ms 24044 KB Output is correct
53 Correct 119 ms 14188 KB Output is correct
54 Correct 111 ms 14188 KB Output is correct
55 Correct 256 ms 24044 KB Output is correct
56 Correct 271 ms 24292 KB Output is correct
57 Correct 117 ms 14188 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 5 ms 876 KB Output is correct
61 Correct 114 ms 14188 KB Output is correct
62 Correct 1 ms 364 KB Output is correct
63 Correct 1 ms 364 KB Output is correct
64 Correct 1 ms 364 KB Output is correct
65 Correct 70 ms 6380 KB Output is correct
66 Correct 113 ms 14188 KB Output is correct
67 Correct 113 ms 14188 KB Output is correct
68 Correct 111 ms 14188 KB Output is correct
69 Correct 115 ms 14188 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 11 ms 1260 KB Output is correct
7 Correct 251 ms 22140 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 259 ms 24172 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 5 ms 876 KB Output is correct
17 Correct 115 ms 14188 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 64 ms 6380 KB Output is correct
21 Correct 261 ms 23972 KB Output is correct
22 Correct 257 ms 24044 KB Output is correct
23 Correct 267 ms 24044 KB Output is correct
24 Correct 259 ms 24044 KB Output is correct
25 Correct 120 ms 14164 KB Output is correct
26 Correct 114 ms 14188 KB Output is correct
27 Correct 262 ms 24172 KB Output is correct
28 Correct 266 ms 24044 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 11 ms 1360 KB Output is correct
37 Correct 253 ms 24148 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 11 ms 1388 KB Output is correct
41 Correct 255 ms 24148 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 5 ms 876 KB Output is correct
45 Correct 118 ms 14188 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 65 ms 6308 KB Output is correct
50 Correct 263 ms 24300 KB Output is correct
51 Correct 257 ms 24172 KB Output is correct
52 Correct 265 ms 24044 KB Output is correct
53 Correct 119 ms 14188 KB Output is correct
54 Correct 111 ms 14188 KB Output is correct
55 Correct 256 ms 24044 KB Output is correct
56 Correct 271 ms 24292 KB Output is correct
57 Correct 117 ms 14188 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 1 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 64 ms 6300 KB Output is correct
62 Correct 256 ms 24044 KB Output is correct
63 Correct 265 ms 24180 KB Output is correct
64 Correct 266 ms 24156 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 65 ms 6372 KB Output is correct
67 Correct 258 ms 24044 KB Output is correct
68 Correct 261 ms 24172 KB Output is correct
69 Correct 267 ms 24180 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 1 ms 364 KB Output is correct
72 Correct 1 ms 364 KB Output is correct
73 Correct 65 ms 6380 KB Output is correct
74 Correct 258 ms 24300 KB Output is correct
75 Correct 275 ms 24044 KB Output is correct
76 Correct 260 ms 24044 KB Output is correct
77 Correct 255 ms 24156 KB Output is correct
78 Correct 1 ms 364 KB Output is correct
79 Correct 1 ms 364 KB Output is correct
80 Correct 5 ms 876 KB Output is correct
81 Correct 114 ms 14188 KB Output is correct
82 Correct 1 ms 364 KB Output is correct
83 Correct 1 ms 364 KB Output is correct
84 Correct 1 ms 364 KB Output is correct
85 Correct 70 ms 6380 KB Output is correct
86 Correct 113 ms 14188 KB Output is correct
87 Correct 113 ms 14188 KB Output is correct
88 Correct 111 ms 14188 KB Output is correct
89 Correct 115 ms 14188 KB Output is correct
90 Correct 1 ms 364 KB Output is correct
91 Correct 1 ms 364 KB Output is correct
92 Correct 5 ms 876 KB Output is correct
93 Correct 111 ms 14164 KB Output is correct
94 Correct 1 ms 364 KB Output is correct
95 Correct 1 ms 364 KB Output is correct
96 Correct 1 ms 364 KB Output is correct
97 Correct 29 ms 3820 KB Output is correct
98 Correct 110 ms 14188 KB Output is correct
99 Correct 112 ms 14188 KB Output is correct
100 Correct 108 ms 14316 KB Output is correct
101 Correct 108 ms 14188 KB Output is correct
102 Correct 110 ms 14188 KB Output is correct
103 Correct 115 ms 14188 KB Output is correct
104 Correct 106 ms 14188 KB Output is correct
105 Correct 115 ms 14164 KB Output is correct