oj.uz

Submission #944594

# Submission time Handle Problem Language Result Execution time Memory
944594 2024-03-13T01:32:39 Z yeediot Mergers (JOI19_mergers) C++14
100 / 100
 931 ms 194204 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
#define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
#define __lg(x) 63-__builtin_clzll(x)
#define pow2(x) (1LL<<x)
void __print(int x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef local
void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
void setio(){}
#define debug(x...)
#endif
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
struct line{
    int a,b;
    int operator()(const int x)const{
        return a*x+b;
    }
};
bool check(line l1,line l2,line l3){
    return (l3.b-l2.b)*(l1.a-l2.a)<=(l2.b-l1.b)*(l2.a-l3.a);
}
const int mxn=5e5+5;
vector<int>adj[mxn];
int c[mxn];
int cnt[mxn];
map<int,int>mp[mxn];
bool cut[mxn];
int sum[mxn];
int sm;
void dfs(int v,int pa=-1){
    mp[v][c[v]]++;
    if(mp[v][c[v]]==cnt[c[v]])mp[v].erase(mp[v].find(c[v]));
    for(auto u:adj[v]){
        if(u==pa)continue;
        dfs(u,v);
        if(sz(mp[v])<sz(mp[u]))swap(mp[u],mp[v]);
        for(auto it:mp[u]){
            mp[v][it.F]+=it.S;
            if(mp[v][it.F]==cnt[it.F]){
                mp[v].erase(mp[v].find(it.F));
            }
        }
    }
    if(!sz(mp[v]) and pa!=-1){
        cut[v]=cut[pa]=1;
    }
}
int ans=0;
void calc(int v,int pa){
    int cc=0;
    if(cut[v])sum[v]++;
    for(auto u:adj[v]){
        if(u==pa)continue;
        calc(u,v);
        sum[v]+=sum[u];
        if(sum[u])cc++;
    }
    if(sm-sum[v])cc++;
    if(cc==1 and cut[v])ans++;
}
signed main(){
    setio();
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,k;
    cin>>n>>k;
    for(int i=1;i<n;i++){
        int a,b;
        cin>>a>>b;
        adj[a].pb(b);
        adj[b].pb(a);
    }
    for(int i=1;i<=n;i++){
        cin>>c[i];
        cnt[c[i]]++;
    }
    dfs(1,-1);
    for(int i=1;i<=n;i++){
        sm+=cut[i];
    }
    calc(1,-1);
    cout<<(ans+1)/2<<'\n';
}
 /*
 input:
 
 */

Compilation message

mergers.cpp: In function 'void setIO(std::string)':
mergers.cpp:42:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mergers.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41560 KB Output is correct
2 Correct 8 ms 41564 KB Output is correct
3 Correct 9 ms 41396 KB Output is correct
4 Correct 8 ms 41564 KB Output is correct
5 Correct 8 ms 39516 KB Output is correct
6 Correct 8 ms 39516 KB Output is correct
7 Correct 8 ms 39516 KB Output is correct
8 Correct 8 ms 39516 KB Output is correct
9 Correct 9 ms 41564 KB Output is correct
10 Correct 9 ms 41520 KB Output is correct
11 Correct 9 ms 41564 KB Output is correct
12 Correct 8 ms 41564 KB Output is correct
13 Correct 9 ms 41580 KB Output is correct
14 Correct 9 ms 41564 KB Output is correct
15 Correct 8 ms 41564 KB Output is correct
16 Correct 9 ms 41564 KB Output is correct
17 Correct 8 ms 41564 KB Output is correct
18 Correct 8 ms 39364 KB Output is correct
19 Correct 8 ms 41564 KB Output is correct
20 Correct 9 ms 41400 KB Output is correct
21 Correct 9 ms 39516 KB Output is correct
22 Correct 8 ms 39516 KB Output is correct
23 Correct 8 ms 39352 KB Output is correct
24 Correct 8 ms 41564 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41560 KB Output is correct
2 Correct 8 ms 41564 KB Output is correct
3 Correct 9 ms 41396 KB Output is correct
4 Correct 8 ms 41564 KB Output is correct
5 Correct 8 ms 39516 KB Output is correct
6 Correct 8 ms 39516 KB Output is correct
7 Correct 8 ms 39516 KB Output is correct
8 Correct 8 ms 39516 KB Output is correct
9 Correct 9 ms 41564 KB Output is correct
10 Correct 9 ms 41520 KB Output is correct
11 Correct 9 ms 41564 KB Output is correct
12 Correct 8 ms 41564 KB Output is correct
13 Correct 9 ms 41580 KB Output is correct
14 Correct 9 ms 41564 KB Output is correct
15 Correct 8 ms 41564 KB Output is correct
16 Correct 9 ms 41564 KB Output is correct
17 Correct 8 ms 41564 KB Output is correct
18 Correct 8 ms 39364 KB Output is correct
19 Correct 8 ms 41564 KB Output is correct
20 Correct 9 ms 41400 KB Output is correct
21 Correct 9 ms 39516 KB Output is correct
22 Correct 8 ms 39516 KB Output is correct
23 Correct 8 ms 39352 KB Output is correct
24 Correct 8 ms 41564 KB Output is correct
25 Correct 8 ms 41560 KB Output is correct
26 Correct 9 ms 41820 KB Output is correct
27 Correct 10 ms 41820 KB Output is correct
28 Correct 10 ms 42012 KB Output is correct
29 Correct 10 ms 41560 KB Output is correct
30 Correct 11 ms 42076 KB Output is correct
31 Correct 8 ms 41564 KB Output is correct
32 Correct 9 ms 42076 KB Output is correct
33 Correct 8 ms 41564 KB Output is correct
34 Correct 9 ms 39772 KB Output is correct
35 Correct 9 ms 41548 KB Output is correct
36 Correct 10 ms 41820 KB Output is correct
37 Correct 11 ms 42076 KB Output is correct
38 Correct 8 ms 41564 KB Output is correct
39 Correct 11 ms 42320 KB Output is correct
40 Correct 11 ms 39772 KB Output is correct
41 Correct 10 ms 41820 KB Output is correct
42 Correct 10 ms 41852 KB Output is correct
43 Correct 10 ms 40280 KB Output is correct
44 Correct 9 ms 41572 KB Output is correct
45 Correct 9 ms 41820 KB Output is correct
46 Correct 10 ms 41820 KB Output is correct
47 Correct 8 ms 41564 KB Output is correct
48 Correct 11 ms 41820 KB Output is correct
49 Correct 9 ms 41564 KB Output is correct
50 Correct 11 ms 41820 KB Output is correct
51 Correct 10 ms 41820 KB Output is correct
52 Correct 10 ms 39800 KB Output is correct
53 Correct 10 ms 41820 KB Output is correct
54 Correct 11 ms 40160 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41560 KB Output is correct
2 Correct 8 ms 41564 KB Output is correct
3 Correct 9 ms 41396 KB Output is correct
4 Correct 8 ms 41564 KB Output is correct
5 Correct 8 ms 39516 KB Output is correct
6 Correct 8 ms 39516 KB Output is correct
7 Correct 8 ms 39516 KB Output is correct
8 Correct 8 ms 39516 KB Output is correct
9 Correct 9 ms 41564 KB Output is correct
10 Correct 9 ms 41520 KB Output is correct
11 Correct 9 ms 41564 KB Output is correct
12 Correct 8 ms 41564 KB Output is correct
13 Correct 9 ms 41580 KB Output is correct
14 Correct 9 ms 41564 KB Output is correct
15 Correct 8 ms 41564 KB Output is correct
16 Correct 9 ms 41564 KB Output is correct
17 Correct 8 ms 41564 KB Output is correct
18 Correct 8 ms 39364 KB Output is correct
19 Correct 8 ms 41564 KB Output is correct
20 Correct 9 ms 41400 KB Output is correct
21 Correct 9 ms 39516 KB Output is correct
22 Correct 8 ms 39516 KB Output is correct
23 Correct 8 ms 39352 KB Output is correct
24 Correct 8 ms 41564 KB Output is correct
25 Correct 8 ms 41560 KB Output is correct
26 Correct 59 ms 50612 KB Output is correct
27 Correct 93 ms 60080 KB Output is correct
28 Correct 10 ms 41816 KB Output is correct
29 Correct 9 ms 41564 KB Output is correct
30 Correct 9 ms 41816 KB Output is correct
31 Correct 64 ms 53392 KB Output is correct
32 Correct 9 ms 40024 KB Output is correct
33 Correct 91 ms 65108 KB Output is correct
34 Correct 86 ms 60496 KB Output is correct
35 Correct 9 ms 41820 KB Output is correct
36 Correct 69 ms 55892 KB Output is correct
37 Correct 10 ms 39772 KB Output is correct
38 Correct 11 ms 41820 KB Output is correct
39 Correct 58 ms 51092 KB Output is correct
40 Correct 10 ms 40280 KB Output is correct
41 Correct 64 ms 51664 KB Output is correct
42 Correct 79 ms 59476 KB Output is correct
43 Correct 8 ms 41560 KB Output is correct
44 Correct 83 ms 66196 KB Output is correct
45 Correct 108 ms 61264 KB Output is correct
46 Correct 11 ms 39768 KB Output is correct
47 Correct 11 ms 40036 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 50600 KB Output is correct
2 Correct 46 ms 48576 KB Output is correct
3 Correct 9 ms 41816 KB Output is correct
4 Correct 10 ms 41976 KB Output is correct
5 Correct 8 ms 41564 KB Output is correct
6 Correct 8 ms 41580 KB Output is correct
7 Correct 10 ms 39800 KB Output is correct
8 Correct 80 ms 56544 KB Output is correct
9 Correct 10 ms 41816 KB Output is correct
10 Correct 65 ms 53224 KB Output is correct
11 Correct 8 ms 41564 KB Output is correct
12 Correct 82 ms 54296 KB Output is correct
13 Correct 73 ms 53424 KB Output is correct
14 Correct 59 ms 48320 KB Output is correct
15 Correct 55 ms 50500 KB Output is correct
16 Correct 10 ms 41816 KB Output is correct
17 Correct 8 ms 41560 KB Output is correct
18 Correct 61 ms 50112 KB Output is correct
19 Correct 75 ms 55888 KB Output is correct
20 Correct 10 ms 41816 KB Output is correct
21 Correct 8 ms 41564 KB Output is correct
22 Correct 80 ms 52276 KB Output is correct
23 Correct 11 ms 41820 KB Output is correct
24 Correct 84 ms 53332 KB Output is correct
25 Correct 67 ms 55120 KB Output is correct
26 Correct 9 ms 41564 KB Output is correct
27 Correct 10 ms 41820 KB Output is correct
28 Correct 10 ms 41816 KB Output is correct
29 Correct 9 ms 39752 KB Output is correct
30 Correct 10 ms 41820 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41560 KB Output is correct
2 Correct 8 ms 41564 KB Output is correct
3 Correct 9 ms 41396 KB Output is correct
4 Correct 8 ms 41564 KB Output is correct
5 Correct 8 ms 39516 KB Output is correct
6 Correct 8 ms 39516 KB Output is correct
7 Correct 8 ms 39516 KB Output is correct
8 Correct 8 ms 39516 KB Output is correct
9 Correct 9 ms 41564 KB Output is correct
10 Correct 9 ms 41520 KB Output is correct
11 Correct 9 ms 41564 KB Output is correct
12 Correct 8 ms 41564 KB Output is correct
13 Correct 9 ms 41580 KB Output is correct
14 Correct 9 ms 41564 KB Output is correct
15 Correct 8 ms 41564 KB Output is correct
16 Correct 9 ms 41564 KB Output is correct
17 Correct 8 ms 41564 KB Output is correct
18 Correct 8 ms 39364 KB Output is correct
19 Correct 8 ms 41564 KB Output is correct
20 Correct 9 ms 41400 KB Output is correct
21 Correct 9 ms 39516 KB Output is correct
22 Correct 8 ms 39516 KB Output is correct
23 Correct 8 ms 39352 KB Output is correct
24 Correct 8 ms 41564 KB Output is correct
25 Correct 8 ms 41560 KB Output is correct
26 Correct 9 ms 41820 KB Output is correct
27 Correct 10 ms 41820 KB Output is correct
28 Correct 10 ms 42012 KB Output is correct
29 Correct 10 ms 41560 KB Output is correct
30 Correct 11 ms 42076 KB Output is correct
31 Correct 8 ms 41564 KB Output is correct
32 Correct 9 ms 42076 KB Output is correct
33 Correct 8 ms 41564 KB Output is correct
34 Correct 9 ms 39772 KB Output is correct
35 Correct 9 ms 41548 KB Output is correct
36 Correct 10 ms 41820 KB Output is correct
37 Correct 11 ms 42076 KB Output is correct
38 Correct 8 ms 41564 KB Output is correct
39 Correct 11 ms 42320 KB Output is correct
40 Correct 11 ms 39772 KB Output is correct
41 Correct 10 ms 41820 KB Output is correct
42 Correct 10 ms 41852 KB Output is correct
43 Correct 10 ms 40280 KB Output is correct
44 Correct 9 ms 41572 KB Output is correct
45 Correct 9 ms 41820 KB Output is correct
46 Correct 10 ms 41820 KB Output is correct
47 Correct 8 ms 41564 KB Output is correct
48 Correct 11 ms 41820 KB Output is correct
49 Correct 9 ms 41564 KB Output is correct
50 Correct 11 ms 41820 KB Output is correct
51 Correct 10 ms 41820 KB Output is correct
52 Correct 10 ms 39800 KB Output is correct
53 Correct 10 ms 41820 KB Output is correct
54 Correct 11 ms 40160 KB Output is correct
55 Correct 8 ms 41560 KB Output is correct
56 Correct 59 ms 50612 KB Output is correct
57 Correct 93 ms 60080 KB Output is correct
58 Correct 10 ms 41816 KB Output is correct
59 Correct 9 ms 41564 KB Output is correct
60 Correct 9 ms 41816 KB Output is correct
61 Correct 64 ms 53392 KB Output is correct
62 Correct 9 ms 40024 KB Output is correct
63 Correct 91 ms 65108 KB Output is correct
64 Correct 86 ms 60496 KB Output is correct
65 Correct 9 ms 41820 KB Output is correct
66 Correct 69 ms 55892 KB Output is correct
67 Correct 10 ms 39772 KB Output is correct
68 Correct 11 ms 41820 KB Output is correct
69 Correct 58 ms 51092 KB Output is correct
70 Correct 10 ms 40280 KB Output is correct
71 Correct 64 ms 51664 KB Output is correct
72 Correct 79 ms 59476 KB Output is correct
73 Correct 8 ms 41560 KB Output is correct
74 Correct 83 ms 66196 KB Output is correct
75 Correct 108 ms 61264 KB Output is correct
76 Correct 11 ms 39768 KB Output is correct
77 Correct 11 ms 40036 KB Output is correct
78 Correct 61 ms 50600 KB Output is correct
79 Correct 46 ms 48576 KB Output is correct
80 Correct 9 ms 41816 KB Output is correct
81 Correct 10 ms 41976 KB Output is correct
82 Correct 8 ms 41564 KB Output is correct
83 Correct 8 ms 41580 KB Output is correct
84 Correct 10 ms 39800 KB Output is correct
85 Correct 80 ms 56544 KB Output is correct
86 Correct 10 ms 41816 KB Output is correct
87 Correct 65 ms 53224 KB Output is correct
88 Correct 8 ms 41564 KB Output is correct
89 Correct 82 ms 54296 KB Output is correct
90 Correct 73 ms 53424 KB Output is correct
91 Correct 59 ms 48320 KB Output is correct
92 Correct 55 ms 50500 KB Output is correct
93 Correct 10 ms 41816 KB Output is correct
94 Correct 8 ms 41560 KB Output is correct
95 Correct 61 ms 50112 KB Output is correct
96 Correct 75 ms 55888 KB Output is correct
97 Correct 10 ms 41816 KB Output is correct
98 Correct 8 ms 41564 KB Output is correct
99 Correct 80 ms 52276 KB Output is correct
100 Correct 11 ms 41820 KB Output is correct
101 Correct 84 ms 53332 KB Output is correct
102 Correct 67 ms 55120 KB Output is correct
103 Correct 9 ms 41564 KB Output is correct
104 Correct 10 ms 41820 KB Output is correct
105 Correct 10 ms 41816 KB Output is correct
106 Correct 9 ms 39752 KB Output is correct
107 Correct 10 ms 41820 KB Output is correct
108 Correct 704 ms 105940 KB Output is correct
109 Correct 672 ms 137260 KB Output is correct
110 Correct 701 ms 159684 KB Output is correct
111 Correct 692 ms 120696 KB Output is correct
112 Correct 598 ms 106836 KB Output is correct
113 Correct 458 ms 83672 KB Output is correct
114 Correct 536 ms 103480 KB Output is correct
115 Correct 568 ms 102948 KB Output is correct
116 Correct 852 ms 181520 KB Output is correct
117 Correct 536 ms 76556 KB Output is correct
118 Correct 544 ms 103040 KB Output is correct
119 Correct 526 ms 76628 KB Output is correct
120 Correct 567 ms 108116 KB Output is correct
121 Correct 542 ms 76596 KB Output is correct
122 Correct 931 ms 194204 KB Output is correct
123 Correct 324 ms 77368 KB Output is correct
124 Correct 548 ms 73788 KB Output is correct