oj.uz

Submission #154943

# Submission time Handle Problem Language Result Execution time Memory
154943 2019-09-25T15:22:39 Z Mercenary Mergers (JOI19_mergers) C++14
100 / 100
 1097 ms 191608 KB 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/trie_policy.hpp>

#define pb push_back
#define mp make_pair
#define taskname "A"

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef pair<int,int> ii;
typedef tree <int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;

const int maxn = 5e5 + 5;

int n , k , col[maxn];
int total[maxn];
int ans = 0;
vector<int> adj[maxn];
int cnt[maxn];
gp_hash_table<int,int> *s[maxn];
int res[maxn];

int cut[maxn];
int sub[maxn];

void DFS(int u , int par){
    int big = -1;
    sub[u] = 1;
    int have = 0;
    for(int c: adj[u]){
        if(c != par){
            DFS(c , u);
            sub[u] += sub[c];
            cut[u] += cut[c];
            if(big == -1 || sub[big] < sub[c])big = c;
        }
    }
    ans += (u == 1 && cut[u] == 1);
    if(u == 1)return;
    if(big == -1){
        s[u] = new gp_hash_table<int,int>();
    }else{
        s[u] = s[big];
        res[u] = res[big];
    }
    auto add = [&](int col , int num){
        (*s[u])[col] += num;
        res[u] += (*s[u])[col] == total[col];
    };
    add(col[u] , 1);
    for(int c : adj[u]){
        if(c != par && c != big){
            for(auto d : (*s[c])){
                add(d.first , d.second);
            }
        }
    }
    if(cut[u] == 0 && (s[u]->size() == res[u]))ans++;
    if((s[u]->size() == res[u]))cut[u] = 1;
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if(fopen(taskname".INP","r")){
		freopen(taskname".INP", "r",stdin);
		freopen(taskname".OUT", "w",stdout);
    }
    cin >> n >> k;
    for(int i = 1 ; i < n ; ++i){
        int u , v;cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }
    for(int i = 1 ; i <= n ; ++i){
        cin >> col[i];
        total[col[i]]++;
    }
    DFS(1 , 0);
//    cout << ans;
    cout << (ans + 1) / 2;
}

Compilation message

mergers.cpp: In function 'void DFS(int, int)':
mergers.cpp:62:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(cut[u] == 0 && (s[u]->size() == res[u]))ans++;
                        ~~~~~~~~~~~~~^~~~~~~~~
mergers.cpp:63:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if((s[u]->size() == res[u]))cut[u] = 1;
         ~~~~~~~~~~~~~^~~~~~~~~
mergers.cpp:33:9: warning: unused variable 'have' [-Wunused-variable]
     int have = 0;
         ^~~~
mergers.cpp: In function 'int main()':
mergers.cpp:71:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".INP", "r",stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
mergers.cpp:72:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".OUT", "w",stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 14 ms 12124 KB Output is correct
13 Correct 13 ms 12140 KB Output is correct
14 Correct 14 ms 12180 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 14 ms 12152 KB Output is correct
17 Correct 14 ms 12260 KB Output is correct
18 Correct 13 ms 12024 KB Output is correct
19 Correct 14 ms 12156 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 14 ms 12124 KB Output is correct
13 Correct 13 ms 12140 KB Output is correct
14 Correct 14 ms 12180 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 14 ms 12152 KB Output is correct
17 Correct 14 ms 12260 KB Output is correct
18 Correct 13 ms 12024 KB Output is correct
19 Correct 14 ms 12156 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12280 KB Output is correct
26 Correct 16 ms 12792 KB Output is correct
27 Correct 15 ms 12408 KB Output is correct
28 Correct 16 ms 13048 KB Output is correct
29 Correct 17 ms 13052 KB Output is correct
30 Correct 16 ms 12792 KB Output is correct
31 Correct 14 ms 12124 KB Output is correct
32 Correct 15 ms 12792 KB Output is correct
33 Correct 14 ms 12280 KB Output is correct
34 Correct 16 ms 12920 KB Output is correct
35 Correct 17 ms 13048 KB Output is correct
36 Correct 15 ms 12536 KB Output is correct
37 Correct 16 ms 12920 KB Output is correct
38 Correct 13 ms 12152 KB Output is correct
39 Correct 16 ms 12920 KB Output is correct
40 Correct 16 ms 12664 KB Output is correct
41 Correct 15 ms 12664 KB Output is correct
42 Correct 17 ms 13176 KB Output is correct
43 Correct 15 ms 12664 KB Output is correct
44 Correct 13 ms 12152 KB Output is correct
45 Correct 16 ms 12664 KB Output is correct
46 Correct 17 ms 12792 KB Output is correct
47 Correct 13 ms 12156 KB Output is correct
48 Correct 16 ms 12664 KB Output is correct
49 Correct 19 ms 13176 KB Output is correct
50 Correct 16 ms 12920 KB Output is correct
51 Correct 16 ms 12536 KB Output is correct
52 Correct 17 ms 13052 KB Output is correct
53 Correct 16 ms 13176 KB Output is correct
54 Correct 16 ms 12792 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 14 ms 12124 KB Output is correct
13 Correct 13 ms 12140 KB Output is correct
14 Correct 14 ms 12180 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 14 ms 12152 KB Output is correct
17 Correct 14 ms 12260 KB Output is correct
18 Correct 13 ms 12024 KB Output is correct
19 Correct 14 ms 12156 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 16 ms 12292 KB Output is correct
26 Correct 120 ms 40944 KB Output is correct
27 Correct 150 ms 33712 KB Output is correct
28 Correct 15 ms 12536 KB Output is correct
29 Correct 13 ms 12152 KB Output is correct
30 Correct 13 ms 12152 KB Output is correct
31 Correct 127 ms 30072 KB Output is correct
32 Correct 16 ms 13020 KB Output is correct
33 Correct 123 ms 29164 KB Output is correct
34 Correct 141 ms 32820 KB Output is correct
35 Correct 15 ms 12664 KB Output is correct
36 Correct 119 ms 20516 KB Output is correct
37 Correct 16 ms 12664 KB Output is correct
38 Correct 16 ms 12664 KB Output is correct
39 Correct 129 ms 40916 KB Output is correct
40 Correct 15 ms 12664 KB Output is correct
41 Correct 122 ms 30156 KB Output is correct
42 Correct 109 ms 22484 KB Output is correct
43 Correct 13 ms 12124 KB Output is correct
44 Correct 119 ms 29612 KB Output is correct
45 Correct 143 ms 35328 KB Output is correct
46 Correct 16 ms 13004 KB Output is correct
47 Correct 16 ms 12792 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 114 ms 41044 KB Output is correct
2 Correct 132 ms 47124 KB Output is correct
3 Correct 15 ms 12664 KB Output is correct
4 Correct 15 ms 12408 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 14 ms 12152 KB Output is correct
7 Correct 16 ms 13048 KB Output is correct
8 Correct 162 ms 37848 KB Output is correct
9 Correct 16 ms 12796 KB Output is correct
10 Correct 125 ms 30044 KB Output is correct
11 Correct 14 ms 12068 KB Output is correct
12 Correct 111 ms 19708 KB Output is correct
13 Correct 156 ms 36104 KB Output is correct
14 Correct 175 ms 46692 KB Output is correct
15 Correct 122 ms 40944 KB Output is correct
16 Correct 16 ms 13048 KB Output is correct
17 Correct 13 ms 12152 KB Output is correct
18 Correct 135 ms 46572 KB Output is correct
19 Correct 130 ms 29928 KB Output is correct
20 Correct 17 ms 12792 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 130 ms 44396 KB Output is correct
23 Correct 16 ms 12664 KB Output is correct
24 Correct 134 ms 24472 KB Output is correct
25 Correct 163 ms 38308 KB Output is correct
26 Correct 16 ms 13176 KB Output is correct
27 Correct 17 ms 12920 KB Output is correct
28 Correct 15 ms 12536 KB Output is correct
29 Correct 16 ms 13048 KB Output is correct
30 Correct 16 ms 13176 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 12152 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 14 ms 12152 KB Output is correct
5 Correct 13 ms 12152 KB Output is correct
6 Correct 13 ms 12152 KB Output is correct
7 Correct 13 ms 12152 KB Output is correct
8 Correct 13 ms 12152 KB Output is correct
9 Correct 14 ms 12152 KB Output is correct
10 Correct 13 ms 12152 KB Output is correct
11 Correct 13 ms 12152 KB Output is correct
12 Correct 14 ms 12124 KB Output is correct
13 Correct 13 ms 12140 KB Output is correct
14 Correct 14 ms 12180 KB Output is correct
15 Correct 13 ms 12152 KB Output is correct
16 Correct 14 ms 12152 KB Output is correct
17 Correct 14 ms 12260 KB Output is correct
18 Correct 13 ms 12024 KB Output is correct
19 Correct 14 ms 12156 KB Output is correct
20 Correct 13 ms 12152 KB Output is correct
21 Correct 13 ms 12152 KB Output is correct
22 Correct 13 ms 12152 KB Output is correct
23 Correct 13 ms 12152 KB Output is correct
24 Correct 13 ms 12152 KB Output is correct
25 Correct 13 ms 12280 KB Output is correct
26 Correct 16 ms 12792 KB Output is correct
27 Correct 15 ms 12408 KB Output is correct
28 Correct 16 ms 13048 KB Output is correct
29 Correct 17 ms 13052 KB Output is correct
30 Correct 16 ms 12792 KB Output is correct
31 Correct 14 ms 12124 KB Output is correct
32 Correct 15 ms 12792 KB Output is correct
33 Correct 14 ms 12280 KB Output is correct
34 Correct 16 ms 12920 KB Output is correct
35 Correct 17 ms 13048 KB Output is correct
36 Correct 15 ms 12536 KB Output is correct
37 Correct 16 ms 12920 KB Output is correct
38 Correct 13 ms 12152 KB Output is correct
39 Correct 16 ms 12920 KB Output is correct
40 Correct 16 ms 12664 KB Output is correct
41 Correct 15 ms 12664 KB Output is correct
42 Correct 17 ms 13176 KB Output is correct
43 Correct 15 ms 12664 KB Output is correct
44 Correct 13 ms 12152 KB Output is correct
45 Correct 16 ms 12664 KB Output is correct
46 Correct 17 ms 12792 KB Output is correct
47 Correct 13 ms 12156 KB Output is correct
48 Correct 16 ms 12664 KB Output is correct
49 Correct 19 ms 13176 KB Output is correct
50 Correct 16 ms 12920 KB Output is correct
51 Correct 16 ms 12536 KB Output is correct
52 Correct 17 ms 13052 KB Output is correct
53 Correct 16 ms 13176 KB Output is correct
54 Correct 16 ms 12792 KB Output is correct
55 Correct 16 ms 12292 KB Output is correct
56 Correct 120 ms 40944 KB Output is correct
57 Correct 150 ms 33712 KB Output is correct
58 Correct 15 ms 12536 KB Output is correct
59 Correct 13 ms 12152 KB Output is correct
60 Correct 13 ms 12152 KB Output is correct
61 Correct 127 ms 30072 KB Output is correct
62 Correct 16 ms 13020 KB Output is correct
63 Correct 123 ms 29164 KB Output is correct
64 Correct 141 ms 32820 KB Output is correct
65 Correct 15 ms 12664 KB Output is correct
66 Correct 119 ms 20516 KB Output is correct
67 Correct 16 ms 12664 KB Output is correct
68 Correct 16 ms 12664 KB Output is correct
69 Correct 129 ms 40916 KB Output is correct
70 Correct 15 ms 12664 KB Output is correct
71 Correct 122 ms 30156 KB Output is correct
72 Correct 109 ms 22484 KB Output is correct
73 Correct 13 ms 12124 KB Output is correct
74 Correct 119 ms 29612 KB Output is correct
75 Correct 143 ms 35328 KB Output is correct
76 Correct 16 ms 13004 KB Output is correct
77 Correct 16 ms 12792 KB Output is correct
78 Correct 114 ms 41044 KB Output is correct
79 Correct 132 ms 47124 KB Output is correct
80 Correct 15 ms 12664 KB Output is correct
81 Correct 15 ms 12408 KB Output is correct
82 Correct 13 ms 12152 KB Output is correct
83 Correct 14 ms 12152 KB Output is correct
84 Correct 16 ms 13048 KB Output is correct
85 Correct 162 ms 37848 KB Output is correct
86 Correct 16 ms 12796 KB Output is correct
87 Correct 125 ms 30044 KB Output is correct
88 Correct 14 ms 12068 KB Output is correct
89 Correct 111 ms 19708 KB Output is correct
90 Correct 156 ms 36104 KB Output is correct
91 Correct 175 ms 46692 KB Output is correct
92 Correct 122 ms 40944 KB Output is correct
93 Correct 16 ms 13048 KB Output is correct
94 Correct 13 ms 12152 KB Output is correct
95 Correct 135 ms 46572 KB Output is correct
96 Correct 130 ms 29928 KB Output is correct
97 Correct 17 ms 12792 KB Output is correct
98 Correct 13 ms 12152 KB Output is correct
99 Correct 130 ms 44396 KB Output is correct
100 Correct 16 ms 12664 KB Output is correct
101 Correct 134 ms 24472 KB Output is correct
102 Correct 163 ms 38308 KB Output is correct
103 Correct 16 ms 13176 KB Output is correct
104 Correct 17 ms 12920 KB Output is correct
105 Correct 15 ms 12536 KB Output is correct
106 Correct 16 ms 13048 KB Output is correct
107 Correct 16 ms 13176 KB Output is correct
108 Correct 854 ms 172696 KB Output is correct
109 Correct 776 ms 73096 KB Output is correct
110 Correct 732 ms 89028 KB Output is correct
111 Correct 825 ms 109148 KB Output is correct
112 Correct 999 ms 145332 KB Output is correct
113 Correct 851 ms 181356 KB Output is correct
114 Correct 759 ms 102528 KB Output is correct
115 Correct 765 ms 102692 KB Output is correct
116 Correct 962 ms 146268 KB Output is correct
117 Correct 1097 ms 191608 KB Output is correct
118 Correct 766 ms 101564 KB Output is correct
119 Correct 1097 ms 182208 KB Output is correct
120 Correct 992 ms 141924 KB Output is correct
121 Correct 1077 ms 184252 KB Output is correct
122 Correct 1054 ms 181776 KB Output is correct
123 Correct 836 ms 183160 KB Output is correct
124 Correct 873 ms 111008 KB Output is correct