oj.uz

Submission #797905

# Submission time Handle Problem Language Result Execution time Memory
797905 2023-07-30T06:06:48 Z Magikarp4000 Connecting Supertrees (IOI20_supertrees) C++17
96 / 100
 173 ms 36144 KB 
// goofy ahh

#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
#define OPTM ios_base::sync_with_stdio(0); cin.tie(0);
#define INF int(1e9+7)
#define ln '\n' 
#define ll long long
#define ull unsigned long long
#define ui unsigned int
#define us unsigned short
#define FOR(i,s,n) for (int i = s; i < n; i++)
#define FORR(i,n,s) for (int i = n; i > s; i--)
#define FORX(u, arr) for (auto u : arr)
#define PB push_back
#define in(v,x) (v.find(x) != v.end())
#define F first
#define S second
#define PII pair<int, int>
#define PLL pair<ll, ll>
#define UM unordered_map
#define US unordered_set
#define PQ priority_queue
#define ALL(v) v.begin(), v.end()
const ll LLINF = 1e18+1;

const int MAXN = 1e3+5;
int n,wn;
int a[MAXN][MAXN], d[MAXN], comp[MAXN];
vector<int> v[MAXN], v1[MAXN], goofy, w;
vector<vector<int>> b;
bool vis[MAXN], z[MAXN];

bool bfs(int start) {
    queue<int> q;
    FOR(i,0,wn) d[w[i]] = INF;
    d[start] = 0;
    q.push(start);
    while (!q.empty()) {
        int s = q.front();
        q.pop();
        FORX(u,v[s]) {
            if (d[s] == 1 && d[u] == 1) {
                goofy = {start,s,u};
                return 1;
            }
            if (d[s]+1 < 2 && d[s]+1 < d[u]) {
                d[u] = d[s]+1;
                q.push(u);
            }
        }
    }
    return 0;
}

void dfs(int s) {
    if (vis[s]) return;
    vis[s] = 1;
    w.PB(s);
    FORX(u,v1[s]) dfs(u);
}

bool solve() {
    goofy.clear();
    FOR(i,0,wn) if (bfs(w[i])) break;
    if (goofy.empty()) {
        FOR(i,0,wn) FOR(j,i+1,wn) if (a[w[i]][w[j]] == 2) return 0;
        FOR(i,0,wn-1) b[w[i]][w[i+1]] = b[w[i+1]][w[i]] = 1;
        return 1;
    }
    FORX(u,goofy) z[u] = 1;
    FOR(i,0,wn) {
        if (z[w[i]]) continue;
        bool ok = 1;
        FORX(u,goofy) if (a[w[i]][u] != 2) ok = 0;
        if (ok) z[w[i]] = 1, goofy.PB(w[i]);
    }
    int gn = goofy.size();
    
    // FOR(i,0,3) cout << goofy[i] << " ";
    // cout << ln;
    FOR(i,0,wn) comp[w[i]] = -1;
    FORX(u,goofy) comp[u] = u;
    FOR(i,0,wn) {
        if (z[w[i]]) continue;
        FOR(j,0,wn) {
            if (i == j) continue;
            if (a[w[i]][w[j]] == 1 && z[w[j]]) {
                comp[w[i]] = w[j];
                break;
            }
        }
    }
    FOR(i,0,wn) {
        FOR(j,0,wn) {
            if (i == j) continue;
            if (a[w[i]][w[j]] == 2 && comp[w[i]] == comp[w[j]]) return 0;
            if (a[w[i]][w[j]] == 1 && comp[w[i]] != comp[w[j]]) return 0;
        }
    }
    FOR(i,0,gn) b[goofy[i]][goofy[(i+1)%gn]] = b[goofy[(i+1)%gn]][goofy[i]] = 1;
    FOR(i,0,wn) if (!z[w[i]]) b[w[i]][comp[w[i]]] = b[comp[w[i]]][w[i]] = 1;
    return 1;
}

int construct(vector<vector<int>> P) {
	n = P.size();
    FOR(i,0,n) FOR(j,0,n) a[i][j] = P[i][j];
    b.resize(n,vector<int>(n));
    FOR(i,0,n) {
        FOR(j,i+1,n) {
            if (a[i][j] == 2) v[i].PB(j), v[j].PB(i);
            if (a[i][j]) v1[i].PB(j), v1[j].PB(i);
        }
    }
    FOR(i,0,n) {
        if (vis[i]) continue;
        w.clear();
        dfs(i);
        wn = w.size();
        FOR(j,0,wn) {
            FOR(k,0,wn) {
                if (a[w[j]][w[k]] == 0) return 0;
            }
        }
        if (!solve()) return 0;
    }
    build(b);
    // FORX(u,goofy) cout << u << " ";
    // cout << ln;
    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 356 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2260 KB Output is correct
7 Correct 166 ms 32108 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 356 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2260 KB Output is correct
7 Correct 166 ms 32108 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 0 ms 360 KB Output is correct
11 Correct 1 ms 356 KB Output is correct
12 Correct 7 ms 2004 KB Output is correct
13 Correct 156 ms 27952 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 1748 KB Output is correct
17 Correct 76 ms 20928 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 47 ms 8240 KB Output is correct
21 Correct 157 ms 28520 KB Output is correct
22 Correct 157 ms 27972 KB Output is correct
23 Correct 163 ms 30028 KB Output is correct
24 Correct 161 ms 28016 KB Output is correct
25 Correct 68 ms 18624 KB Output is correct
26 Correct 66 ms 18100 KB Output is correct
27 Correct 166 ms 31052 KB Output is correct
28 Correct 155 ms 27980 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 360 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 7 ms 2036 KB Output is correct
9 Correct 159 ms 27976 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 7 ms 2516 KB Output is correct
13 Correct 169 ms 36144 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 1876 KB Output is correct
17 Correct 77 ms 23536 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 39 ms 8368 KB Output is correct
22 Correct 169 ms 29068 KB Output is correct
23 Correct 154 ms 28076 KB Output is correct
24 Correct 165 ms 34224 KB Output is correct
25 Correct 67 ms 18092 KB Output is correct
26 Correct 66 ms 19172 KB Output is correct
27 Correct 157 ms 28088 KB Output is correct
28 Correct 173 ms 32188 KB Output is correct
29 Correct 67 ms 18096 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 39 ms 8344 KB Output is correct
5 Correct 159 ms 28600 KB Output is correct
6 Correct 154 ms 27972 KB Output is correct
7 Correct 162 ms 30028 KB Output is correct
8 Correct 1 ms 360 KB Output is correct
9 Correct 43 ms 8372 KB Output is correct
10 Correct 154 ms 29032 KB Output is correct
11 Correct 163 ms 28080 KB Output is correct
12 Correct 164 ms 34240 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 360 KB Output is correct
15 Correct 0 ms 356 KB Output is correct
16 Correct 39 ms 8364 KB Output is correct
17 Correct 158 ms 29236 KB Output is correct
18 Correct 157 ms 29004 KB Output is correct
19 Correct 155 ms 28344 KB Output is correct
20 Correct 154 ms 27960 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 356 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2260 KB Output is correct
7 Correct 166 ms 32108 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 0 ms 360 KB Output is correct
11 Correct 1 ms 356 KB Output is correct
12 Correct 7 ms 2004 KB Output is correct
13 Correct 156 ms 27952 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 1748 KB Output is correct
17 Correct 76 ms 20928 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 47 ms 8240 KB Output is correct
21 Correct 157 ms 28520 KB Output is correct
22 Correct 157 ms 27972 KB Output is correct
23 Correct 163 ms 30028 KB Output is correct
24 Correct 161 ms 28016 KB Output is correct
25 Correct 68 ms 18624 KB Output is correct
26 Correct 66 ms 18100 KB Output is correct
27 Correct 166 ms 31052 KB Output is correct
28 Correct 155 ms 27980 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 360 KB Output is correct
35 Correct 0 ms 468 KB Output is correct
36 Correct 7 ms 2036 KB Output is correct
37 Correct 159 ms 27976 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 0 ms 340 KB Output is correct
40 Correct 7 ms 2516 KB Output is correct
41 Correct 169 ms 36144 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 4 ms 1876 KB Output is correct
45 Correct 77 ms 23536 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 39 ms 8368 KB Output is correct
50 Correct 169 ms 29068 KB Output is correct
51 Correct 154 ms 28076 KB Output is correct
52 Correct 165 ms 34224 KB Output is correct
53 Correct 67 ms 18092 KB Output is correct
54 Correct 66 ms 19172 KB Output is correct
55 Correct 157 ms 28088 KB Output is correct
56 Correct 173 ms 32188 KB Output is correct
57 Correct 67 ms 18096 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 4 ms 2008 KB Output is correct
61 Correct 79 ms 24624 KB Output is correct
62 Correct 1 ms 360 KB Output is correct
63 Correct 0 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 39 ms 8268 KB Output is correct
66 Correct 68 ms 19260 KB Output is correct
67 Correct 69 ms 19132 KB Output is correct
68 Correct 67 ms 18352 KB Output is correct
69 Correct 61 ms 18096 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 356 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 2260 KB Output is correct
7 Correct 166 ms 32108 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 0 ms 360 KB Output is correct
11 Correct 1 ms 356 KB Output is correct
12 Correct 7 ms 2004 KB Output is correct
13 Correct 156 ms 27952 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 1748 KB Output is correct
17 Correct 76 ms 20928 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 47 ms 8240 KB Output is correct
21 Correct 157 ms 28520 KB Output is correct
22 Correct 157 ms 27972 KB Output is correct
23 Correct 163 ms 30028 KB Output is correct
24 Correct 161 ms 28016 KB Output is correct
25 Correct 68 ms 18624 KB Output is correct
26 Correct 66 ms 18100 KB Output is correct
27 Correct 166 ms 31052 KB Output is correct
28 Correct 155 ms 27980 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 360 KB Output is correct
35 Correct 0 ms 468 KB Output is correct
36 Correct 7 ms 2036 KB Output is correct
37 Correct 159 ms 27976 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 0 ms 340 KB Output is correct
40 Correct 7 ms 2516 KB Output is correct
41 Correct 169 ms 36144 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 4 ms 1876 KB Output is correct
45 Correct 77 ms 23536 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 0 ms 340 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 39 ms 8368 KB Output is correct
50 Correct 169 ms 29068 KB Output is correct
51 Correct 154 ms 28076 KB Output is correct
52 Correct 165 ms 34224 KB Output is correct
53 Correct 67 ms 18092 KB Output is correct
54 Correct 66 ms 19172 KB Output is correct
55 Correct 157 ms 28088 KB Output is correct
56 Correct 173 ms 32188 KB Output is correct
57 Correct 67 ms 18096 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 39 ms 8344 KB Output is correct
62 Correct 159 ms 28600 KB Output is correct
63 Correct 154 ms 27972 KB Output is correct
64 Correct 162 ms 30028 KB Output is correct
65 Correct 1 ms 360 KB Output is correct
66 Correct 43 ms 8372 KB Output is correct
67 Correct 154 ms 29032 KB Output is correct
68 Correct 163 ms 28080 KB Output is correct
69 Correct 164 ms 34240 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 0 ms 360 KB Output is correct
72 Correct 0 ms 356 KB Output is correct
73 Correct 39 ms 8364 KB Output is correct
74 Correct 158 ms 29236 KB Output is correct
75 Correct 157 ms 29004 KB Output is correct
76 Correct 155 ms 28344 KB Output is correct
77 Correct 154 ms 27960 KB Output is correct
78 Correct 1 ms 340 KB Output is correct
79 Correct 0 ms 340 KB Output is correct
80 Correct 4 ms 2008 KB Output is correct
81 Correct 79 ms 24624 KB Output is correct
82 Correct 1 ms 360 KB Output is correct
83 Correct 0 ms 340 KB Output is correct
84 Correct 1 ms 340 KB Output is correct
85 Correct 39 ms 8268 KB Output is correct
86 Correct 68 ms 19260 KB Output is correct
87 Correct 69 ms 19132 KB Output is correct
88 Correct 67 ms 18352 KB Output is correct
89 Correct 61 ms 18096 KB Output is correct
90 Correct 1 ms 340 KB Output is correct
91 Correct 1 ms 356 KB Output is correct
92 Correct 5 ms 2004 KB Output is correct
93 Correct 79 ms 23996 KB Output is correct
94 Runtime error 1 ms 468 KB Execution killed with signal 11
95 Halted 0 ms 0 KB -