oj.uz

Submission #483387

# Submission time Handle Problem Language Result Execution time Memory
483387 2021-10-29T03:22:54 Z syl123456 Parachute rings (IOI12_rings) C++17
100 / 100
 1248 ms 102196 KB 
#include <bits/stdc++.h>
#define all(i) (i).begin(), (i).end()
using namespace std;
template<typename T1, typename T2>
ostream& operator << (ostream &i, pair<T1, T2> j) {
    return i << j.first << ' ' << j.second;
}
template<typename T>
ostream& operator << (ostream &i, vector<T> j) {
    i << '{' << j.size() << ':';
    for (T ii : j) i << ' ' << ii;
    return i << '}';
}
void Debug(bool _split) {}
template<typename T1, typename ...T2>
void Debug(bool _split, T1 x, T2 ...args) {
    if (_split)
        cerr << ", ";
    cerr << x, Debug(true, args...);
}
template<typename T>
void Debuga(T *i, int n) {
    cerr << '[';
    for (int j = 0; j < n; ++j) cerr << i[j] << " ]"[j == n - 1];
    cerr << endl;
}
#ifdef SYL
#define debug(args...) cerr << "Line(" << __LINE__ << ") -> [" << #args << "] is [", Debug(false, args), cerr << ']' << endl
#define debuga(i) cerr << "Line(" << __LINE__ << ") -> [" << #i << "] is ", Debuga(i, sizeof(i) / sizeof(typeid(*i).name()))
#else
#define debug(args...) void(0)
#define debuga(i) void(0)
#endif
typedef long long ll;
typedef pair<int, int> pi;
const int inf = 0x3f3f3f3f, lg = 20;
const ll mod = 1e9 + 7, INF = 0x3f3f3f3f3f3f3f3f;

vector<vector<int>> deg, pa, g;
vector<bool> fail;
vector<int> v, sz, id;
int n, ans;

int extend() {
    deg.emplace_back(n, 0);
    pa.emplace_back(n);
    iota(all(pa.back()), 0);
    fail.push_back(false);
    assert(deg.size() <= 5);
    return deg.size() - 1;
}

int find(int _id, int i) {
    return pa[_id][i] = pa[_id][i] == i ? i : find(_id, pa[_id][i]);
}

void upd(vector<int> tmp) {
    if (fail[0])
        return;
    if (v.empty()) {
        v = tmp;
        return;
    }
    for (int i = 0; i < (int)v.size(); ) {
        bool find = false;
        for (int j : tmp)
            if (v[i] == j)
                find = true;
        if (!find)
            swap(v[i], v.back()), v.pop_back();
        else
            ++i;
    }
    if (v.empty())
        fail[0] = true;
}

void add(int _id, pi _e) {
    if (fail[_id])
        return;
    int x = _e.first, y = _e.second;
    if (++deg[_id][x] >= 3) {
        fail[_id] = true;
        return;
    }
    if (++deg[_id][y] >= 3) {
        fail[_id] = true;
        return;
    }
    x = find(_id, x), y = find(_id, y);
    if (x == y) {
        fail[_id] = true;
        return;
    }
    pa[_id][x] = y;
}

vector<pi> e;

void Init(int N) {
    ans = n = N;
    extend();
    g.resize(n);
    sz.assign(n, 1);
    id.assign(n, -1);
}

void Link(int x, int y) {
    if (fail[0])
        return;
    ++deg[0][x], ++deg[0][y];
    g[x].push_back(y), g[y].push_back(x);
    e.emplace_back(x, y);
    if (deg[0][x] == 4) {
        vector<int> tmp(1, x);
        upd(tmp);
    }
    else if (deg[0][x] == 3) {
        vector<int> tmp = g[x];
        tmp.push_back(x);
        upd(tmp);
    }
    if (deg[0][y] == 4) {
        vector<int> tmp(1, y);
        upd(tmp);
    }
    else if (deg[0][y] == 3) {
        vector<int> tmp = g[y];
        tmp.push_back(y);
        upd(tmp);
    }
    x = find(0, x), y = find(0, y);
    if (x == y) {
        if (!fail[0] && v.empty()) {
            if (ans == n)
                ans = sz[x];
            else
                ans = 0;
        }
    }
    else
        pa[0][x] = y, sz[y] += sz[x];
}

int CountCritical() {
    if (fail[0])
        return 0;
    if (v.empty())
        return ans;
    vector<int> tmp;
    for (int i : v) {
        if (id[i] == -1)
            id[i] = extend();
        for (pi j : e)
            if (j.first != i && j.second != i)
                add(id[i], j);
        if (!fail[id[i]])
            tmp.push_back(i);
    }
    e.clear();
    upd(tmp);
    return v.size();
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 808 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 3 ms 844 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 844 KB Output is correct
10 Correct 2 ms 716 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 385 ms 42716 KB Output is correct
2 Correct 948 ms 72876 KB Output is correct
3 Correct 190 ms 45252 KB Output is correct
4 Correct 1046 ms 83656 KB Output is correct
5 Correct 1061 ms 83556 KB Output is correct
6 Correct 1004 ms 82200 KB Output is correct
7 Correct 180 ms 45228 KB Output is correct
8 Correct 1227 ms 93264 KB Output is correct
9 Correct 1248 ms 91296 KB Output is correct
10 Correct 725 ms 81840 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 808 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 3 ms 844 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 844 KB Output is correct
10 Correct 2 ms 716 KB Output is correct
11 Correct 3 ms 844 KB Output is correct
12 Correct 5 ms 1484 KB Output is correct
13 Correct 5 ms 1484 KB Output is correct
14 Correct 3 ms 972 KB Output is correct
15 Correct 4 ms 1484 KB Output is correct
16 Correct 4 ms 1160 KB Output is correct
17 Correct 2 ms 844 KB Output is correct
18 Correct 3 ms 1292 KB Output is correct
19 Correct 6 ms 1228 KB Output is correct
20 Correct 5 ms 1484 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 808 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 3 ms 844 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 844 KB Output is correct
10 Correct 2 ms 716 KB Output is correct
11 Correct 3 ms 844 KB Output is correct
12 Correct 5 ms 1484 KB Output is correct
13 Correct 5 ms 1484 KB Output is correct
14 Correct 3 ms 972 KB Output is correct
15 Correct 4 ms 1484 KB Output is correct
16 Correct 4 ms 1160 KB Output is correct
17 Correct 2 ms 844 KB Output is correct
18 Correct 3 ms 1292 KB Output is correct
19 Correct 6 ms 1228 KB Output is correct
20 Correct 5 ms 1484 KB Output is correct
21 Correct 15 ms 3852 KB Output is correct
22 Correct 24 ms 5908 KB Output is correct
23 Correct 33 ms 7388 KB Output is correct
24 Correct 43 ms 6932 KB Output is correct
25 Correct 16 ms 7844 KB Output is correct
26 Correct 43 ms 9992 KB Output is correct
27 Correct 37 ms 7884 KB Output is correct
28 Correct 21 ms 7756 KB Output is correct
29 Correct 22 ms 8268 KB Output is correct
30 Correct 47 ms 9144 KB Output is correct

Subtask #5
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 2 ms 588 KB Output is correct
3 Correct 2 ms 808 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 460 KB Output is correct
6 Correct 3 ms 844 KB Output is correct
7 Correct 1 ms 460 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 844 KB Output is correct
10 Correct 2 ms 716 KB Output is correct
11 Correct 385 ms 42716 KB Output is correct
12 Correct 948 ms 72876 KB Output is correct
13 Correct 190 ms 45252 KB Output is correct
14 Correct 1046 ms 83656 KB Output is correct
15 Correct 1061 ms 83556 KB Output is correct
16 Correct 1004 ms 82200 KB Output is correct
17 Correct 180 ms 45228 KB Output is correct
18 Correct 1227 ms 93264 KB Output is correct
19 Correct 1248 ms 91296 KB Output is correct
20 Correct 725 ms 81840 KB Output is correct
21 Correct 3 ms 844 KB Output is correct
22 Correct 5 ms 1484 KB Output is correct
23 Correct 5 ms 1484 KB Output is correct
24 Correct 3 ms 972 KB Output is correct
25 Correct 4 ms 1484 KB Output is correct
26 Correct 4 ms 1160 KB Output is correct
27 Correct 2 ms 844 KB Output is correct
28 Correct 3 ms 1292 KB Output is correct
29 Correct 6 ms 1228 KB Output is correct
30 Correct 5 ms 1484 KB Output is correct
31 Correct 15 ms 3852 KB Output is correct
32 Correct 24 ms 5908 KB Output is correct
33 Correct 33 ms 7388 KB Output is correct
34 Correct 43 ms 6932 KB Output is correct
35 Correct 16 ms 7844 KB Output is correct
36 Correct 43 ms 9992 KB Output is correct
37 Correct 37 ms 7884 KB Output is correct
38 Correct 21 ms 7756 KB Output is correct
39 Correct 22 ms 8268 KB Output is correct
40 Correct 47 ms 9144 KB Output is correct
41 Correct 190 ms 33528 KB Output is correct
42 Correct 595 ms 84988 KB Output is correct
43 Correct 292 ms 72516 KB Output is correct
44 Correct 192 ms 77864 KB Output is correct
45 Correct 417 ms 84660 KB Output is correct
46 Correct 652 ms 76576 KB Output is correct
47 Correct 869 ms 78160 KB Output is correct
48 Correct 225 ms 79392 KB Output is correct
49 Correct 637 ms 80840 KB Output is correct
50 Correct 675 ms 80084 KB Output is correct
51 Correct 316 ms 64952 KB Output is correct
52 Correct 188 ms 62976 KB Output is correct
53 Correct 223 ms 78376 KB Output is correct
54 Correct 1161 ms 96948 KB Output is correct
55 Correct 1141 ms 102196 KB Output is correct