oj.uz

Submission #236394

# Submission time Handle Problem Language Result Execution time Memory
236394 2020-06-01T19:12:49 Z Charis02 Mergers (JOI19_mergers) C++14
34 / 100
 3000 ms 22248 KB 
#include<iostream>
#include<stdio.h>
#include<vector>
#include<cmath>
#include<queue>
#include<string.h>
#include<map>
#include<set>
#include<algorithm>
#define ll long long
#define pi pair < ll,ll >
#define mp(a,b) make_pair(a,b)
#define mid (low+high)/2
#define rep(i,a,b) for(int i = a;i < b;i++)
#define N 300004
#define INF 1e9+7

using namespace std;

struct dsu{
    ll par[N];
    ll sz[N];
    ll col[N];

    ll get(ll x)
    {
        return (par[x] == x) ? x : get(par[x]);
    }

    void join(ll x,ll y)
    {
        ll fx=get(x);
        ll fy = get(y);
        if(fx==fy)
            return;
        if(sz[fx]<sz[fy])
            swap(fx,fy);
        sz[fx]+=sz[fy];
        par[fy]=fx;
    }

    ll get_col(ll x)
    {
        return col[get(x)];
    }
};

ll n,k,state[N],answer;
ll ar[N];
vector < ll > graph[N];
ll cnt = 1;
dsu comp;
vector < ll > fin[N];
ll deg[N];

bool check(ll cur,ll par,ll col)
{
    bool res = false;
    if(state[cur] == col)
        res = true;

    rep(i,0,graph[cur].size())
    {
        ll v =graph[cur][i];

        if(v==par)
            continue;

        if(check(v,cur,col))
        {
            comp.join(cur,v);
            res=true;
        }
    }

    return res;
}

void process_paths()
{
    rep(i,1,n+1)
    {
        if(ar[state[i]] == 0)
            ar[state[i]] = cnt++;
        check(i,i,state[i]);
    }

    rep(i,1,n+1)
    {
        if(comp.get_col(i) == 0)
            comp.col[comp.get(i)] = cnt++;
        ar[i] = comp.get_col(i);
    }

    rep(i,1,n+1)
    {
        rep(j,0,graph[i].size())
        {
            ll v = graph[i][j];
            if(ar[i] != ar[v])
            {
                deg[ar[i]]++;
                fin[ar[i]].push_back(ar[v]);
            }
        }
    }

    ll leaves = 0;

    rep(i,1,cnt)
    {
        if(deg[i] == 1)
            leaves++;
    }

    answer = (leaves+1)/2;

    return;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin >> n >> k;

    rep(i,0,n-1)
    {
        ll a,b;
        cin >> a >> b;
        graph[a].push_back(b);
        graph[b].push_back(a);
    }

    rep(i,1,n+1)
    {
        comp.par[i]=i;
        comp.sz[i]=1;
        cin >> state[i];
    }

    process_paths();

    cout << answer << endl;

    return 0;
}

Compilation message

mergers.cpp: In function 'bool check(long long int, long long int, long long int)':
mergers.cpp:14:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(int i = a;i < b;i++)
mergers.cpp:62:9:
     rep(i,0,graph[cur].size())
         ~~~~~~~~~~~~~~~~~~~~~       
mergers.cpp:62:5: note: in expansion of macro 'rep'
     rep(i,0,graph[cur].size())
     ^~~
mergers.cpp: In function 'void process_paths()':
mergers.cpp:14:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(int i = a;i < b;i++)
mergers.cpp:97:13:
         rep(j,0,graph[i].size())
             ~~~~~~~~~~~~~~~~~~~     
mergers.cpp:97:9: note: in expansion of macro 'rep'
         rep(j,0,graph[i].size())
         ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14464 KB Output is correct
2 Correct 12 ms 14464 KB Output is correct
3 Correct 12 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 19 ms 14464 KB Output is correct
7 Correct 12 ms 14464 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 12 ms 14464 KB Output is correct
10 Correct 12 ms 14464 KB Output is correct
11 Correct 12 ms 14464 KB Output is correct
12 Correct 12 ms 14592 KB Output is correct
13 Correct 12 ms 14464 KB Output is correct
14 Correct 12 ms 14464 KB Output is correct
15 Correct 12 ms 14464 KB Output is correct
16 Correct 12 ms 14464 KB Output is correct
17 Correct 12 ms 14464 KB Output is correct
18 Correct 12 ms 14464 KB Output is correct
19 Correct 12 ms 14464 KB Output is correct
20 Correct 12 ms 14464 KB Output is correct
21 Correct 12 ms 14464 KB Output is correct
22 Correct 12 ms 14464 KB Output is correct
23 Correct 12 ms 14464 KB Output is correct
24 Correct 12 ms 14464 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14464 KB Output is correct
2 Correct 12 ms 14464 KB Output is correct
3 Correct 12 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 19 ms 14464 KB Output is correct
7 Correct 12 ms 14464 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 12 ms 14464 KB Output is correct
10 Correct 12 ms 14464 KB Output is correct
11 Correct 12 ms 14464 KB Output is correct
12 Correct 12 ms 14592 KB Output is correct
13 Correct 12 ms 14464 KB Output is correct
14 Correct 12 ms 14464 KB Output is correct
15 Correct 12 ms 14464 KB Output is correct
16 Correct 12 ms 14464 KB Output is correct
17 Correct 12 ms 14464 KB Output is correct
18 Correct 12 ms 14464 KB Output is correct
19 Correct 12 ms 14464 KB Output is correct
20 Correct 12 ms 14464 KB Output is correct
21 Correct 12 ms 14464 KB Output is correct
22 Correct 12 ms 14464 KB Output is correct
23 Correct 12 ms 14464 KB Output is correct
24 Correct 12 ms 14464 KB Output is correct
25 Correct 13 ms 14464 KB Output is correct
26 Correct 178 ms 14840 KB Output is correct
27 Correct 216 ms 14720 KB Output is correct
28 Correct 172 ms 14968 KB Output is correct
29 Correct 160 ms 14968 KB Output is correct
30 Correct 167 ms 14720 KB Output is correct
31 Correct 12 ms 14464 KB Output is correct
32 Correct 222 ms 14976 KB Output is correct
33 Correct 12 ms 14464 KB Output is correct
34 Correct 71 ms 14720 KB Output is correct
35 Correct 161 ms 14896 KB Output is correct
36 Correct 167 ms 14732 KB Output is correct
37 Correct 166 ms 14756 KB Output is correct
38 Correct 12 ms 14464 KB Output is correct
39 Correct 160 ms 14720 KB Output is correct
40 Correct 275 ms 14720 KB Output is correct
41 Correct 180 ms 14720 KB Output is correct
42 Correct 71 ms 14840 KB Output is correct
43 Correct 237 ms 14968 KB Output is correct
44 Correct 12 ms 14464 KB Output is correct
45 Correct 211 ms 14808 KB Output is correct
46 Correct 163 ms 14720 KB Output is correct
47 Correct 12 ms 14464 KB Output is correct
48 Correct 173 ms 14720 KB Output is correct
49 Correct 71 ms 14968 KB Output is correct
50 Correct 172 ms 14968 KB Output is correct
51 Correct 183 ms 14848 KB Output is correct
52 Correct 72 ms 14720 KB Output is correct
53 Correct 70 ms 14720 KB Output is correct
54 Correct 189 ms 14720 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14464 KB Output is correct
2 Correct 12 ms 14464 KB Output is correct
3 Correct 12 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 19 ms 14464 KB Output is correct
7 Correct 12 ms 14464 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 12 ms 14464 KB Output is correct
10 Correct 12 ms 14464 KB Output is correct
11 Correct 12 ms 14464 KB Output is correct
12 Correct 12 ms 14592 KB Output is correct
13 Correct 12 ms 14464 KB Output is correct
14 Correct 12 ms 14464 KB Output is correct
15 Correct 12 ms 14464 KB Output is correct
16 Correct 12 ms 14464 KB Output is correct
17 Correct 12 ms 14464 KB Output is correct
18 Correct 12 ms 14464 KB Output is correct
19 Correct 12 ms 14464 KB Output is correct
20 Correct 12 ms 14464 KB Output is correct
21 Correct 12 ms 14464 KB Output is correct
22 Correct 12 ms 14464 KB Output is correct
23 Correct 12 ms 14464 KB Output is correct
24 Correct 12 ms 14464 KB Output is correct
25 Correct 12 ms 14464 KB Output is correct
26 Execution timed out 3078 ms 22124 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3067 ms 22248 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 14464 KB Output is correct
2 Correct 12 ms 14464 KB Output is correct
3 Correct 12 ms 14464 KB Output is correct
4 Correct 12 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 19 ms 14464 KB Output is correct
7 Correct 12 ms 14464 KB Output is correct
8 Correct 12 ms 14464 KB Output is correct
9 Correct 12 ms 14464 KB Output is correct
10 Correct 12 ms 14464 KB Output is correct
11 Correct 12 ms 14464 KB Output is correct
12 Correct 12 ms 14592 KB Output is correct
13 Correct 12 ms 14464 KB Output is correct
14 Correct 12 ms 14464 KB Output is correct
15 Correct 12 ms 14464 KB Output is correct
16 Correct 12 ms 14464 KB Output is correct
17 Correct 12 ms 14464 KB Output is correct
18 Correct 12 ms 14464 KB Output is correct
19 Correct 12 ms 14464 KB Output is correct
20 Correct 12 ms 14464 KB Output is correct
21 Correct 12 ms 14464 KB Output is correct
22 Correct 12 ms 14464 KB Output is correct
23 Correct 12 ms 14464 KB Output is correct
24 Correct 12 ms 14464 KB Output is correct
25 Correct 13 ms 14464 KB Output is correct
26 Correct 178 ms 14840 KB Output is correct
27 Correct 216 ms 14720 KB Output is correct
28 Correct 172 ms 14968 KB Output is correct
29 Correct 160 ms 14968 KB Output is correct
30 Correct 167 ms 14720 KB Output is correct
31 Correct 12 ms 14464 KB Output is correct
32 Correct 222 ms 14976 KB Output is correct
33 Correct 12 ms 14464 KB Output is correct
34 Correct 71 ms 14720 KB Output is correct
35 Correct 161 ms 14896 KB Output is correct
36 Correct 167 ms 14732 KB Output is correct
37 Correct 166 ms 14756 KB Output is correct
38 Correct 12 ms 14464 KB Output is correct
39 Correct 160 ms 14720 KB Output is correct
40 Correct 275 ms 14720 KB Output is correct
41 Correct 180 ms 14720 KB Output is correct
42 Correct 71 ms 14840 KB Output is correct
43 Correct 237 ms 14968 KB Output is correct
44 Correct 12 ms 14464 KB Output is correct
45 Correct 211 ms 14808 KB Output is correct
46 Correct 163 ms 14720 KB Output is correct
47 Correct 12 ms 14464 KB Output is correct
48 Correct 173 ms 14720 KB Output is correct
49 Correct 71 ms 14968 KB Output is correct
50 Correct 172 ms 14968 KB Output is correct
51 Correct 183 ms 14848 KB Output is correct
52 Correct 72 ms 14720 KB Output is correct
53 Correct 70 ms 14720 KB Output is correct
54 Correct 189 ms 14720 KB Output is correct
55 Correct 12 ms 14464 KB Output is correct
56 Execution timed out 3078 ms 22124 KB Time limit exceeded
57 Halted 0 ms 0 KB -