oj.uz

Submission #433068

# Submission time Handle Problem Language Result Execution time Memory
433068 2021-06-18T19:47:04 Z someone Parachute rings (IOI12_rings) C++14
100 / 100
 2453 ms 142660 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1e6 + 42;

struct UF {
    bool isChain = true, tree[N];
    int par[N], deg[N], diff[N], sz[N], nbCycle = 0, total = 0;

    void init(int n) {
        for(int i = 0; i < n; i++) {
            sz[i] = 1;
            par[i] = i;
            deg[i] = 0;
            diff[i] = -1;
            tree[i] = true;
        }
    }

    int F(int i) {
        if(par[i] == i)
            return i;
        return par[i] = F(par[i]);
    }

    int U(int a, int b) {
        deg[a]++;
        deg[b]++;
        int d = max(deg[a], deg[b]);
        if(d > 2)
            isChain = false;
        a = F(a), b = F(b);
        if(a == b) {
            if(tree[a]) {
                total += sz[a];
                nbCycle++;
            }
            diff[a]++;
            isChain = false;
            tree[a] = false;
            return d;
        }
        if(sz[b] < sz[a])
            swap(a, b);
        par[a] = b;
        sz[b] += sz[a];
        diff[b] += diff[a] + 1;
        if(diff[b] != -1)
            isChain = false;
        return d;
    }
};

UF uf[5];
vector<int> adj[N];
int n, maxi = 0, nbCrit, no[5];

void create(int i, int iNot) {
    no[i] = iNot;
    for(int j = 0; j <= n; j++)
        if(j != no[i])
            for(int k : adj[j])
                if(k != no[i] && j < k)
                    uf[i].U(j, k);
}

void Init(int N_) {
    n = N_;
    nbCrit = N_;
    for(int i = 0; i < 5; i++)
        uf[i].init(N_);
}

void Link(int A, int B) {
    adj[A].push_back(B);
    adj[B].push_back(A);
    int newMax = uf[0].U(A, B);
    if(maxi == 3) {
        nbCrit = 0;
        for(int i = 1; i < 5; i++) {
            if(A != no[i] && B != no[i])
                uf[i].U(A, B);
            if(uf[i].isChain)
                nbCrit++;
        }
    } else {
        if(newMax == 3) {
            maxi = newMax;
            int imax = A;
            if(uf[0].deg[A] < uf[0].deg[B])
                imax = B;
            create(1, imax);
            for(int j = 0; j < 3; j++)
                create(j + 2, adj[imax][j]);
            nbCrit = 0;
            for(int i = 1; i < 5; i++)
                if(uf[i].isChain)
                    nbCrit++;
        } else {
            if(uf[0].nbCycle == 0) {
                nbCrit = n;
            } else if(uf[0].nbCycle == 1) {
                nbCrit = uf[0].total;
            } else {
                nbCrit = 0;
            }
        }
    }
}

int CountCritical() {
    return nbCrit;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23884 KB Output is correct
2 Correct 16 ms 24488 KB Output is correct
3 Correct 16 ms 24524 KB Output is correct
4 Correct 14 ms 24096 KB Output is correct
5 Correct 15 ms 24304 KB Output is correct
6 Correct 15 ms 24540 KB Output is correct
7 Correct 14 ms 24396 KB Output is correct
8 Correct 15 ms 24464 KB Output is correct
9 Correct 15 ms 24500 KB Output is correct
10 Correct 16 ms 24524 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 507 ms 83460 KB Output is correct
2 Correct 2041 ms 115600 KB Output is correct
3 Correct 2351 ms 134324 KB Output is correct
4 Correct 1334 ms 138160 KB Output is correct
5 Correct 1343 ms 138268 KB Output is correct
6 Correct 1289 ms 136748 KB Output is correct
7 Correct 2298 ms 133680 KB Output is correct
8 Correct 2377 ms 131048 KB Output is correct
9 Correct 2453 ms 138244 KB Output is correct
10 Correct 905 ms 136464 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23884 KB Output is correct
2 Correct 16 ms 24488 KB Output is correct
3 Correct 16 ms 24524 KB Output is correct
4 Correct 14 ms 24096 KB Output is correct
5 Correct 15 ms 24304 KB Output is correct
6 Correct 15 ms 24540 KB Output is correct
7 Correct 14 ms 24396 KB Output is correct
8 Correct 15 ms 24464 KB Output is correct
9 Correct 15 ms 24500 KB Output is correct
10 Correct 16 ms 24524 KB Output is correct
11 Correct 17 ms 24524 KB Output is correct
12 Correct 20 ms 25292 KB Output is correct
13 Correct 20 ms 25156 KB Output is correct
14 Correct 19 ms 25036 KB Output is correct
15 Correct 18 ms 25876 KB Output is correct
16 Correct 22 ms 25152 KB Output is correct
17 Correct 20 ms 25164 KB Output is correct
18 Correct 21 ms 26172 KB Output is correct
19 Correct 18 ms 25200 KB Output is correct
20 Correct 20 ms 25164 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23884 KB Output is correct
2 Correct 16 ms 24488 KB Output is correct
3 Correct 16 ms 24524 KB Output is correct
4 Correct 14 ms 24096 KB Output is correct
5 Correct 15 ms 24304 KB Output is correct
6 Correct 15 ms 24540 KB Output is correct
7 Correct 14 ms 24396 KB Output is correct
8 Correct 15 ms 24464 KB Output is correct
9 Correct 15 ms 24500 KB Output is correct
10 Correct 16 ms 24524 KB Output is correct
11 Correct 17 ms 24524 KB Output is correct
12 Correct 20 ms 25292 KB Output is correct
13 Correct 20 ms 25156 KB Output is correct
14 Correct 19 ms 25036 KB Output is correct
15 Correct 18 ms 25876 KB Output is correct
16 Correct 22 ms 25152 KB Output is correct
17 Correct 20 ms 25164 KB Output is correct
18 Correct 21 ms 26172 KB Output is correct
19 Correct 18 ms 25200 KB Output is correct
20 Correct 20 ms 25164 KB Output is correct
21 Correct 33 ms 29556 KB Output is correct
22 Correct 55 ms 32752 KB Output is correct
23 Correct 62 ms 35104 KB Output is correct
24 Correct 95 ms 33988 KB Output is correct
25 Correct 40 ms 32736 KB Output is correct
26 Correct 102 ms 34808 KB Output is correct
27 Correct 65 ms 34628 KB Output is correct
28 Correct 122 ms 35164 KB Output is correct
29 Correct 77 ms 34500 KB Output is correct
30 Correct 73 ms 36420 KB Output is correct

Subtask #5
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23884 KB Output is correct
2 Correct 16 ms 24488 KB Output is correct
3 Correct 16 ms 24524 KB Output is correct
4 Correct 14 ms 24096 KB Output is correct
5 Correct 15 ms 24304 KB Output is correct
6 Correct 15 ms 24540 KB Output is correct
7 Correct 14 ms 24396 KB Output is correct
8 Correct 15 ms 24464 KB Output is correct
9 Correct 15 ms 24500 KB Output is correct
10 Correct 16 ms 24524 KB Output is correct
11 Correct 507 ms 83460 KB Output is correct
12 Correct 2041 ms 115600 KB Output is correct
13 Correct 2351 ms 134324 KB Output is correct
14 Correct 1334 ms 138160 KB Output is correct
15 Correct 1343 ms 138268 KB Output is correct
16 Correct 1289 ms 136748 KB Output is correct
17 Correct 2298 ms 133680 KB Output is correct
18 Correct 2377 ms 131048 KB Output is correct
19 Correct 2453 ms 138244 KB Output is correct
20 Correct 905 ms 136464 KB Output is correct
21 Correct 17 ms 24524 KB Output is correct
22 Correct 20 ms 25292 KB Output is correct
23 Correct 20 ms 25156 KB Output is correct
24 Correct 19 ms 25036 KB Output is correct
25 Correct 18 ms 25876 KB Output is correct
26 Correct 22 ms 25152 KB Output is correct
27 Correct 20 ms 25164 KB Output is correct
28 Correct 21 ms 26172 KB Output is correct
29 Correct 18 ms 25200 KB Output is correct
30 Correct 20 ms 25164 KB Output is correct
31 Correct 33 ms 29556 KB Output is correct
32 Correct 55 ms 32752 KB Output is correct
33 Correct 62 ms 35104 KB Output is correct
34 Correct 95 ms 33988 KB Output is correct
35 Correct 40 ms 32736 KB Output is correct
36 Correct 102 ms 34808 KB Output is correct
37 Correct 65 ms 34628 KB Output is correct
38 Correct 122 ms 35164 KB Output is correct
39 Correct 77 ms 34500 KB Output is correct
40 Correct 73 ms 36420 KB Output is correct
41 Correct 275 ms 77620 KB Output is correct
42 Correct 1033 ms 116380 KB Output is correct
43 Correct 373 ms 107776 KB Output is correct
44 Correct 1640 ms 138912 KB Output is correct
45 Correct 1548 ms 136356 KB Output is correct
46 Correct 871 ms 128348 KB Output is correct
47 Correct 1136 ms 130144 KB Output is correct
48 Correct 982 ms 129848 KB Output is correct
49 Correct 836 ms 142660 KB Output is correct
50 Correct 887 ms 141012 KB Output is correct
51 Correct 497 ms 98556 KB Output is correct
52 Correct 1395 ms 117972 KB Output is correct
53 Correct 1004 ms 130144 KB Output is correct
54 Correct 2082 ms 126400 KB Output is correct
55 Correct 2286 ms 134920 KB Output is correct