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답안 #105454

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
105454 2019-04-12T12:02:56 Z reality Mergers (JOI19_mergers) C++17
100 / 100
 1890 ms 201984 KB 
#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define ll long long
#define dbg(v) cerr<<#v<<" = "<<v<<'\n'
#define vi vector<int>
#define vl vector <ll>
#define pii pair<int,int>
#define vii vector < pii >
#define mp make_pair
#define db long double
#define pb push_back
#define all(s) s.begin(),s.end()
template < class P , class Q > ostream& operator<<(ostream& stream, pair < P , Q > v){ stream << "(" << v.fi << ',' << v.se << ")"; return stream;}
template < class T > ostream& operator<<(ostream& stream, const vector<T> v){ stream << "[ "; for (int i=0; i<(int)v.size(); i++) stream << v[i] << " "; stream << "]"; return stream;}
template < class T > T smin(T &a,T b) {if (a > b) a = b;return a;}
template < class T > T smax(T &a,T b) {if (a < b) a = b;return a;}
#define pp pair < pair < int , vi > , map < int , int > >
const int N = 1e6 + 5;
int cnt[N];
void comb(pp &a,pp & b) {
    if (a.se.size() < b.se.size())
        swap(a,b);
    if (a.fi.se.size() < b.fi.se.size())
        swap(a.fi.se,b.fi.se);
    for (auto it : b.fi.se)
        a.fi.se.pb(it);
    a.fi.fi += b.fi.fi;
    for (auto it : b.se) {
        a.se[it.fi] += it.se;
        a.fi.fi += a.se[it.fi] == cnt[it.fi] && it.se < cnt[it.fi];
    }
    b.fi.fi = 0;
    b.fi.se.clear();
    b.se.clear();
}
vi g[N];
int v[N];
int flag[N];
int deg[N];
pp M[N];
int R = 0;
void dfs(int node,int prev) {
    M[node].fi.fi = cnt[v[node]] == 1;
    M[node].fi.se.pb(node);
    M[node].se[v[node]] = 1;
    for (auto it : g[node]) {
        if (it == prev)
            continue;
        dfs(it,node);
        comb(M[node],M[it]);
    }
    if (M[node].fi.fi == M[node].se.size()) {
        ++R;
        for (auto it : M[node].fi.se)
            flag[it] = R;
        M[node].fi.fi = 0;
        M[node].fi.se.clear();
        M[node].se.clear();
    }
}
int main(void) {
    int n,k;
    cin.tie(0);
    ios_base :: sync_with_stdio(0);
    cin>>n>>k;
    vii e;
    for (int i = 1;i < n;++i) {
        int a,b;
        cin>>a>>b;
        e.pb(mp(a,b));
        g[a].pb(b);
        g[b].pb(a);
    }
    for (int i = 1;i <= n;++i) {
        cin>>v[i];
        cnt[v[i]] += 1;
    }
    dfs(1,0);
    if (R == 1) {
        puts("0");
        return 0;
    }
    if (R == 2) {
        puts("1");
        return 0;
    }
    int ans = 0;
    for (auto it : e)
        if (flag[it.fi] != flag[it.se])
            ++deg[flag[it.fi]],++deg[flag[it.se]];
    for (int i = 1;i <= R;++i)
        ans += deg[i] == 1;
    cout << ((ans + 1) / 2) << '\n';
    return 0;
}

Compilation message

mergers.cpp: In function 'void dfs(int, int)':
mergers.cpp:54:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (M[node].fi.fi == M[node].se.size()) {
         ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 102 ms 102136 KB Output is correct
2 Correct 87 ms 102136 KB Output is correct
3 Correct 86 ms 102136 KB Output is correct
4 Correct 94 ms 102152 KB Output is correct
5 Correct 91 ms 102136 KB Output is correct
6 Correct 112 ms 102264 KB Output is correct
7 Correct 98 ms 102232 KB Output is correct
8 Correct 103 ms 102172 KB Output is correct
9 Correct 107 ms 102168 KB Output is correct
10 Correct 106 ms 102264 KB Output is correct
11 Correct 92 ms 102136 KB Output is correct
12 Correct 115 ms 102136 KB Output is correct
13 Correct 103 ms 102136 KB Output is correct
14 Correct 88 ms 102164 KB Output is correct
15 Correct 107 ms 102136 KB Output is correct
16 Correct 91 ms 102136 KB Output is correct
17 Correct 90 ms 102088 KB Output is correct
18 Correct 100 ms 102136 KB Output is correct
19 Correct 92 ms 102108 KB Output is correct
20 Correct 108 ms 102200 KB Output is correct
21 Correct 90 ms 102136 KB Output is correct
22 Correct 92 ms 102264 KB Output is correct
23 Correct 102 ms 102136 KB Output is correct
24 Correct 95 ms 102264 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 102 ms 102136 KB Output is correct
2 Correct 87 ms 102136 KB Output is correct
3 Correct 86 ms 102136 KB Output is correct
4 Correct 94 ms 102152 KB Output is correct
5 Correct 91 ms 102136 KB Output is correct
6 Correct 112 ms 102264 KB Output is correct
7 Correct 98 ms 102232 KB Output is correct
8 Correct 103 ms 102172 KB Output is correct
9 Correct 107 ms 102168 KB Output is correct
10 Correct 106 ms 102264 KB Output is correct
11 Correct 92 ms 102136 KB Output is correct
12 Correct 115 ms 102136 KB Output is correct
13 Correct 103 ms 102136 KB Output is correct
14 Correct 88 ms 102164 KB Output is correct
15 Correct 107 ms 102136 KB Output is correct
16 Correct 91 ms 102136 KB Output is correct
17 Correct 90 ms 102088 KB Output is correct
18 Correct 100 ms 102136 KB Output is correct
19 Correct 92 ms 102108 KB Output is correct
20 Correct 108 ms 102200 KB Output is correct
21 Correct 90 ms 102136 KB Output is correct
22 Correct 92 ms 102264 KB Output is correct
23 Correct 102 ms 102136 KB Output is correct
24 Correct 95 ms 102264 KB Output is correct
25 Correct 91 ms 102136 KB Output is correct
26 Correct 95 ms 102392 KB Output is correct
27 Correct 101 ms 102352 KB Output is correct
28 Correct 109 ms 102520 KB Output is correct
29 Correct 96 ms 102492 KB Output is correct
30 Correct 94 ms 102628 KB Output is correct
31 Correct 90 ms 102136 KB Output is correct
32 Correct 114 ms 102900 KB Output is correct
33 Correct 109 ms 102140 KB Output is correct
34 Correct 108 ms 102520 KB Output is correct
35 Correct 116 ms 102392 KB Output is correct
36 Correct 88 ms 102520 KB Output is correct
37 Correct 107 ms 102520 KB Output is correct
38 Correct 87 ms 102204 KB Output is correct
39 Correct 117 ms 102656 KB Output is correct
40 Correct 98 ms 102524 KB Output is correct
41 Correct 92 ms 102492 KB Output is correct
42 Correct 91 ms 102648 KB Output is correct
43 Correct 170 ms 102776 KB Output is correct
44 Correct 95 ms 102108 KB Output is correct
45 Correct 101 ms 102648 KB Output is correct
46 Correct 107 ms 102392 KB Output is correct
47 Correct 108 ms 102136 KB Output is correct
48 Correct 104 ms 102396 KB Output is correct
49 Correct 96 ms 102440 KB Output is correct
50 Correct 104 ms 102520 KB Output is correct
51 Correct 109 ms 102472 KB Output is correct
52 Correct 89 ms 102492 KB Output is correct
53 Correct 98 ms 102504 KB Output is correct
54 Correct 102 ms 102520 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 102 ms 102136 KB Output is correct
2 Correct 87 ms 102136 KB Output is correct
3 Correct 86 ms 102136 KB Output is correct
4 Correct 94 ms 102152 KB Output is correct
5 Correct 91 ms 102136 KB Output is correct
6 Correct 112 ms 102264 KB Output is correct
7 Correct 98 ms 102232 KB Output is correct
8 Correct 103 ms 102172 KB Output is correct
9 Correct 107 ms 102168 KB Output is correct
10 Correct 106 ms 102264 KB Output is correct
11 Correct 92 ms 102136 KB Output is correct
12 Correct 115 ms 102136 KB Output is correct
13 Correct 103 ms 102136 KB Output is correct
14 Correct 88 ms 102164 KB Output is correct
15 Correct 107 ms 102136 KB Output is correct
16 Correct 91 ms 102136 KB Output is correct
17 Correct 90 ms 102088 KB Output is correct
18 Correct 100 ms 102136 KB Output is correct
19 Correct 92 ms 102108 KB Output is correct
20 Correct 108 ms 102200 KB Output is correct
21 Correct 90 ms 102136 KB Output is correct
22 Correct 92 ms 102264 KB Output is correct
23 Correct 102 ms 102136 KB Output is correct
24 Correct 95 ms 102264 KB Output is correct
25 Correct 113 ms 102108 KB Output is correct
26 Correct 212 ms 112204 KB Output is correct
27 Correct 277 ms 113940 KB Output is correct
28 Correct 107 ms 102412 KB Output is correct
29 Correct 91 ms 102108 KB Output is correct
30 Correct 87 ms 102084 KB Output is correct
31 Correct 232 ms 113004 KB Output is correct
32 Correct 98 ms 102392 KB Output is correct
33 Correct 282 ms 124136 KB Output is correct
34 Correct 249 ms 113900 KB Output is correct
35 Correct 90 ms 102392 KB Output is correct
36 Correct 235 ms 113692 KB Output is correct
37 Correct 93 ms 102520 KB Output is correct
38 Correct 98 ms 102392 KB Output is correct
39 Correct 207 ms 112364 KB Output is correct
40 Correct 99 ms 102776 KB Output is correct
41 Correct 266 ms 113680 KB Output is correct
42 Correct 283 ms 116712 KB Output is correct
43 Correct 88 ms 102264 KB Output is correct
44 Correct 312 ms 124468 KB Output is correct
45 Correct 317 ms 118748 KB Output is correct
46 Correct 111 ms 102520 KB Output is correct
47 Correct 115 ms 102456 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 215 ms 110832 KB Output is correct
2 Correct 205 ms 111212 KB Output is correct
3 Correct 101 ms 102540 KB Output is correct
4 Correct 103 ms 102392 KB Output is correct
5 Correct 103 ms 102300 KB Output is correct
6 Correct 103 ms 102308 KB Output is correct
7 Correct 97 ms 102452 KB Output is correct
8 Correct 285 ms 112876 KB Output is correct
9 Correct 92 ms 102392 KB Output is correct
10 Correct 304 ms 112492 KB Output is correct
11 Correct 98 ms 102140 KB Output is correct
12 Correct 259 ms 112208 KB Output is correct
13 Correct 272 ms 112504 KB Output is correct
14 Correct 273 ms 112616 KB Output is correct
15 Correct 244 ms 112492 KB Output is correct
16 Correct 114 ms 102520 KB Output is correct
17 Correct 99 ms 102236 KB Output is correct
18 Correct 280 ms 113328 KB Output is correct
19 Correct 288 ms 119404 KB Output is correct
20 Correct 116 ms 102392 KB Output is correct
21 Correct 116 ms 102124 KB Output is correct
22 Correct 318 ms 114156 KB Output is correct
23 Correct 108 ms 102520 KB Output is correct
24 Correct 257 ms 112144 KB Output is correct
25 Correct 322 ms 116196 KB Output is correct
26 Correct 101 ms 102396 KB Output is correct
27 Correct 98 ms 102540 KB Output is correct
28 Correct 98 ms 102464 KB Output is correct
29 Correct 116 ms 102520 KB Output is correct
30 Correct 93 ms 102520 KB Output is correct

Subtask #5
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 102 ms 102136 KB Output is correct
2 Correct 87 ms 102136 KB Output is correct
3 Correct 86 ms 102136 KB Output is correct
4 Correct 94 ms 102152 KB Output is correct
5 Correct 91 ms 102136 KB Output is correct
6 Correct 112 ms 102264 KB Output is correct
7 Correct 98 ms 102232 KB Output is correct
8 Correct 103 ms 102172 KB Output is correct
9 Correct 107 ms 102168 KB Output is correct
10 Correct 106 ms 102264 KB Output is correct
11 Correct 92 ms 102136 KB Output is correct
12 Correct 115 ms 102136 KB Output is correct
13 Correct 103 ms 102136 KB Output is correct
14 Correct 88 ms 102164 KB Output is correct
15 Correct 107 ms 102136 KB Output is correct
16 Correct 91 ms 102136 KB Output is correct
17 Correct 90 ms 102088 KB Output is correct
18 Correct 100 ms 102136 KB Output is correct
19 Correct 92 ms 102108 KB Output is correct
20 Correct 108 ms 102200 KB Output is correct
21 Correct 90 ms 102136 KB Output is correct
22 Correct 92 ms 102264 KB Output is correct
23 Correct 102 ms 102136 KB Output is correct
24 Correct 95 ms 102264 KB Output is correct
25 Correct 91 ms 102136 KB Output is correct
26 Correct 95 ms 102392 KB Output is correct
27 Correct 101 ms 102352 KB Output is correct
28 Correct 109 ms 102520 KB Output is correct
29 Correct 96 ms 102492 KB Output is correct
30 Correct 94 ms 102628 KB Output is correct
31 Correct 90 ms 102136 KB Output is correct
32 Correct 114 ms 102900 KB Output is correct
33 Correct 109 ms 102140 KB Output is correct
34 Correct 108 ms 102520 KB Output is correct
35 Correct 116 ms 102392 KB Output is correct
36 Correct 88 ms 102520 KB Output is correct
37 Correct 107 ms 102520 KB Output is correct
38 Correct 87 ms 102204 KB Output is correct
39 Correct 117 ms 102656 KB Output is correct
40 Correct 98 ms 102524 KB Output is correct
41 Correct 92 ms 102492 KB Output is correct
42 Correct 91 ms 102648 KB Output is correct
43 Correct 170 ms 102776 KB Output is correct
44 Correct 95 ms 102108 KB Output is correct
45 Correct 101 ms 102648 KB Output is correct
46 Correct 107 ms 102392 KB Output is correct
47 Correct 108 ms 102136 KB Output is correct
48 Correct 104 ms 102396 KB Output is correct
49 Correct 96 ms 102440 KB Output is correct
50 Correct 104 ms 102520 KB Output is correct
51 Correct 109 ms 102472 KB Output is correct
52 Correct 89 ms 102492 KB Output is correct
53 Correct 98 ms 102504 KB Output is correct
54 Correct 102 ms 102520 KB Output is correct
55 Correct 113 ms 102108 KB Output is correct
56 Correct 212 ms 112204 KB Output is correct
57 Correct 277 ms 113940 KB Output is correct
58 Correct 107 ms 102412 KB Output is correct
59 Correct 91 ms 102108 KB Output is correct
60 Correct 87 ms 102084 KB Output is correct
61 Correct 232 ms 113004 KB Output is correct
62 Correct 98 ms 102392 KB Output is correct
63 Correct 282 ms 124136 KB Output is correct
64 Correct 249 ms 113900 KB Output is correct
65 Correct 90 ms 102392 KB Output is correct
66 Correct 235 ms 113692 KB Output is correct
67 Correct 93 ms 102520 KB Output is correct
68 Correct 98 ms 102392 KB Output is correct
69 Correct 207 ms 112364 KB Output is correct
70 Correct 99 ms 102776 KB Output is correct
71 Correct 266 ms 113680 KB Output is correct
72 Correct 283 ms 116712 KB Output is correct
73 Correct 88 ms 102264 KB Output is correct
74 Correct 312 ms 124468 KB Output is correct
75 Correct 317 ms 118748 KB Output is correct
76 Correct 111 ms 102520 KB Output is correct
77 Correct 115 ms 102456 KB Output is correct
78 Correct 215 ms 110832 KB Output is correct
79 Correct 205 ms 111212 KB Output is correct
80 Correct 101 ms 102540 KB Output is correct
81 Correct 103 ms 102392 KB Output is correct
82 Correct 103 ms 102300 KB Output is correct
83 Correct 103 ms 102308 KB Output is correct
84 Correct 97 ms 102452 KB Output is correct
85 Correct 285 ms 112876 KB Output is correct
86 Correct 92 ms 102392 KB Output is correct
87 Correct 304 ms 112492 KB Output is correct
88 Correct 98 ms 102140 KB Output is correct
89 Correct 259 ms 112208 KB Output is correct
90 Correct 272 ms 112504 KB Output is correct
91 Correct 273 ms 112616 KB Output is correct
92 Correct 244 ms 112492 KB Output is correct
93 Correct 114 ms 102520 KB Output is correct
94 Correct 99 ms 102236 KB Output is correct
95 Correct 280 ms 113328 KB Output is correct
96 Correct 288 ms 119404 KB Output is correct
97 Correct 116 ms 102392 KB Output is correct
98 Correct 116 ms 102124 KB Output is correct
99 Correct 318 ms 114156 KB Output is correct
100 Correct 108 ms 102520 KB Output is correct
101 Correct 257 ms 112144 KB Output is correct
102 Correct 322 ms 116196 KB Output is correct
103 Correct 101 ms 102396 KB Output is correct
104 Correct 98 ms 102540 KB Output is correct
105 Correct 98 ms 102464 KB Output is correct
106 Correct 116 ms 102520 KB Output is correct
107 Correct 93 ms 102520 KB Output is correct
108 Correct 1730 ms 163276 KB Output is correct
109 Correct 1568 ms 182680 KB Output is correct
110 Correct 1549 ms 201984 KB Output is correct
111 Correct 1541 ms 191964 KB Output is correct
112 Correct 1885 ms 183824 KB Output is correct
113 Correct 1226 ms 159308 KB Output is correct
114 Correct 1222 ms 161788 KB Output is correct
115 Correct 1153 ms 162012 KB Output is correct
116 Correct 1730 ms 161684 KB Output is correct
117 Correct 1179 ms 155744 KB Output is correct
118 Correct 1064 ms 156268 KB Output is correct
119 Correct 1178 ms 155836 KB Output is correct
120 Correct 1429 ms 174132 KB Output is correct
121 Correct 1252 ms 155872 KB Output is correct
122 Correct 1890 ms 175544 KB Output is correct
123 Correct 1061 ms 157148 KB Output is correct
124 Correct 1351 ms 157404 KB Output is correct