oj.uz

Submission #382197

# Submission time Handle Problem Language Result Execution time Memory
382197 2021-03-26T16:55:40 Z Return_0 Capital City (JOI20_capital_city) C++17
100 / 100
 581 ms 40260 KB 
    #pragma GCC optimize("Ofast,unroll-loops")
    #pragma comment(linker, "/stack:200000000")
    #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")
     
    #include <bits/stdc++.h>
    #include <ext/pb_ds/assoc_container.hpp>
    #include <ext/pb_ds/tree_policy.hpp>
     
    using namespace std;
    using namespace __gnu_pbds;
     
    typedef int ll;
    typedef long double ld;
    typedef pair <ll, ll> pll;
     
    #ifdef SINA
    #define dbg(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <typename Arg1> void __f(const char* name, Arg1&& arg1) { cout << name << " : " << arg1 << std::endl; }
    template <typename Arg1, typename... Args> void __f (const char* names, Arg1&& arg1, Args&&... args) {
    	const char* comma = strchr(names + 1, ',');cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...); }
    #define dbg2(x, j, n) cout<< #x << " : "; output((j), (n), x, 1); cout.flush();
    #else
    #define dbg(...) 0
    #define dbg2(x, j, n) 0
    #endif
    #define SZ(x) ((ll)((x).size()))
    #define File(s, t) freopen(s ".txt", "r", stdin); freopen(t ".txt", "w", stdout);
    #define input(j, n, a) for (int _i = (j); _i < (n)+(j); _i++) cin>> a[_i];
    #define output(j, n, a, t) for (int _i = (j); _i < (n)+(j); _i++) cout<< a[_i] << (((t) && _i != (n)+(j)-1)? ' ' : '\n');
    #define kill(x) return cout<< (x) << endl, 0
    #define cl const ll
    #define fr first
    #define sc second
    #define lc (v << 1)
    #define rc (lc | 1)
    #define mid ((l + r) >> 1)
    #define All(x) (x).begin(), (x).end()
     
    cl inf = sizeof(ll) == 4 ? (1e9 + 10) : (3e18), mod = 1e9 + 7, MOD = 998244353;
     
    template <class A,class B> ostream& operator << (ostream& out,const pair<A,B>&a){return out<<'('<<a.first<<", "<<a.second<<')';}
    template <class A> ostream& operator << (ostream& out, const vector<A> &a) {
    	out<< '['; for (int i = -1; ++i < int(a.size());) out<< a[i] << (i + 1 < int(a.size()) ? ", " : ""); return out<<']'; }
    template <class T, typename _t = less <T> > using Tree = tree <T, null_type, _t, rb_tree_tag, tree_order_statistics_node_update>;
     
    cl N = 2e5 + 7;
     
    ll C [N], sz [N], mark [N], q [N], par [N], iter [N], R, n, k, sum, ans, tar;
    bool hide [N], hide_color [N];
    vector <ll> adj [N], col [N];
     
    ll plant (cl &v, cl &pr = 0) {
    	sz[v] = 1;
    	for (auto &u : adj[v]) if (!hide[u] && u != pr) sz[v] += plant(u, v);
    	return sz[v];
    }
     
    inline ll find_centroid (ll v, cl &S, ll pr = 0) {
    	for (ll i = 0; i < SZ(adj[v]); i++) {
    		ll &u = adj[v][i];
    		if (sz[u] << 1 > S && !hide[u] && u != pr) pr = v, v = u, i = -1;
    	}
    	return v;
    }
     
    void dfs (cl &v, cl &pr = 0) {
    	par[v] = pr;
    	iter[v] = tar;
    	for (auto &u : adj[v]) if (!hide_color[C[u]] && u != pr) dfs(u, v);
    }
     
    void centroid_decomposition (ll v = 1) {
    	v = find_centroid(v, plant(v));
    	if (!hide_color[C[v]]) {
    		tar = C[v]; sum = -1;
    		dfs(v);
    		R = 1; q[0] = C[v]; mark[0] = mark[C[v]] = tar;
    		for (ll l = 0; l < R; l++) {
    			sum++;
    			for (auto &u : col[q[l]]) {
    				if (iter[u] != tar) goto Hell;
    				if (mark[C[par[u]]] != tar) q[R++] = C[par[u]], mark[C[par[u]]] = tar;
    			}
    		}
    		ans = min(ans, sum);
    	}
    	Hell:
    	hide_color[C[v]] = hide[v] = true;
    	for (auto &u : adj[v]) if (!hide[u]) centroid_decomposition(u);
    }
     
    int main ()
    {
    	ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
     
    	cin>> n >> k;
    	for (ll i = 1, v, u; i < n; i++) {
    		cin>> v >> u;
    		adj[v].push_back(u);
    		adj[u].push_back(v);
    	}
    	for (ll i = 1; i <= n; i++) {
    		cin>> C[i];
    		col[C[i]].push_back(i);
    	}
     
    	ans = n;
    	centroid_decomposition();
     
    	cout<< ans << endl;
     
    	cerr<< "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
     
    	return 0;
    }
    /*
     
    */

Compilation message

capital_city.cpp:2: warning: ignoring #pragma comment  [-Wunknown-pragmas]
    2 |     #pragma comment(linker, "/stack:200000000")
      |

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 9836 KB Output is correct
2 Correct 8 ms 9836 KB Output is correct
3 Correct 8 ms 9836 KB Output is correct
4 Correct 8 ms 9836 KB Output is correct
5 Correct 8 ms 9836 KB Output is correct
6 Correct 8 ms 9836 KB Output is correct
7 Correct 8 ms 9836 KB Output is correct
8 Correct 8 ms 9836 KB Output is correct
9 Correct 8 ms 9836 KB Output is correct
10 Correct 8 ms 9836 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 9836 KB Output is correct
2 Correct 8 ms 9836 KB Output is correct
3 Correct 8 ms 9836 KB Output is correct
4 Correct 8 ms 9836 KB Output is correct
5 Correct 8 ms 9836 KB Output is correct
6 Correct 8 ms 9836 KB Output is correct
7 Correct 8 ms 9836 KB Output is correct
8 Correct 8 ms 9836 KB Output is correct
9 Correct 8 ms 9836 KB Output is correct
10 Correct 8 ms 9836 KB Output is correct
11 Correct 9 ms 9964 KB Output is correct
12 Correct 9 ms 9964 KB Output is correct
13 Correct 9 ms 9964 KB Output is correct
14 Correct 10 ms 9964 KB Output is correct
15 Correct 9 ms 10092 KB Output is correct
16 Correct 11 ms 9964 KB Output is correct
17 Correct 9 ms 9964 KB Output is correct
18 Correct 9 ms 9964 KB Output is correct
19 Correct 9 ms 9964 KB Output is correct
20 Correct 9 ms 9964 KB Output is correct
21 Correct 9 ms 9964 KB Output is correct
22 Correct 9 ms 10092 KB Output is correct
23 Correct 9 ms 9964 KB Output is correct
24 Correct 9 ms 9964 KB Output is correct
25 Correct 9 ms 10092 KB Output is correct
26 Correct 10 ms 10092 KB Output is correct
27 Correct 10 ms 10112 KB Output is correct
28 Correct 9 ms 9964 KB Output is correct
29 Correct 9 ms 10052 KB Output is correct
30 Correct 10 ms 9964 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 524 ms 40260 KB Output is correct
2 Correct 200 ms 38764 KB Output is correct
3 Correct 525 ms 37868 KB Output is correct
4 Correct 205 ms 38764 KB Output is correct
5 Correct 516 ms 34796 KB Output is correct
6 Correct 201 ms 38636 KB Output is correct
7 Correct 537 ms 35180 KB Output is correct
8 Correct 198 ms 38248 KB Output is correct
9 Correct 525 ms 33516 KB Output is correct
10 Correct 483 ms 30700 KB Output is correct
11 Correct 494 ms 33900 KB Output is correct
12 Correct 508 ms 36460 KB Output is correct
13 Correct 501 ms 30316 KB Output is correct
14 Correct 504 ms 36716 KB Output is correct
15 Correct 524 ms 36460 KB Output is correct
16 Correct 506 ms 31468 KB Output is correct
17 Correct 493 ms 31980 KB Output is correct
18 Correct 494 ms 32264 KB Output is correct
19 Correct 506 ms 35420 KB Output is correct
20 Correct 520 ms 37612 KB Output is correct
21 Correct 8 ms 9836 KB Output is correct

Subtask #4
59.0 / 59.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 9836 KB Output is correct
2 Correct 8 ms 9836 KB Output is correct
3 Correct 8 ms 9836 KB Output is correct
4 Correct 8 ms 9836 KB Output is correct
5 Correct 8 ms 9836 KB Output is correct
6 Correct 8 ms 9836 KB Output is correct
7 Correct 8 ms 9836 KB Output is correct
8 Correct 8 ms 9836 KB Output is correct
9 Correct 8 ms 9836 KB Output is correct
10 Correct 8 ms 9836 KB Output is correct
11 Correct 9 ms 9964 KB Output is correct
12 Correct 9 ms 9964 KB Output is correct
13 Correct 9 ms 9964 KB Output is correct
14 Correct 10 ms 9964 KB Output is correct
15 Correct 9 ms 10092 KB Output is correct
16 Correct 11 ms 9964 KB Output is correct
17 Correct 9 ms 9964 KB Output is correct
18 Correct 9 ms 9964 KB Output is correct
19 Correct 9 ms 9964 KB Output is correct
20 Correct 9 ms 9964 KB Output is correct
21 Correct 9 ms 9964 KB Output is correct
22 Correct 9 ms 10092 KB Output is correct
23 Correct 9 ms 9964 KB Output is correct
24 Correct 9 ms 9964 KB Output is correct
25 Correct 9 ms 10092 KB Output is correct
26 Correct 10 ms 10092 KB Output is correct
27 Correct 10 ms 10112 KB Output is correct
28 Correct 9 ms 9964 KB Output is correct
29 Correct 9 ms 10052 KB Output is correct
30 Correct 10 ms 9964 KB Output is correct
31 Correct 524 ms 40260 KB Output is correct
32 Correct 200 ms 38764 KB Output is correct
33 Correct 525 ms 37868 KB Output is correct
34 Correct 205 ms 38764 KB Output is correct
35 Correct 516 ms 34796 KB Output is correct
36 Correct 201 ms 38636 KB Output is correct
37 Correct 537 ms 35180 KB Output is correct
38 Correct 198 ms 38248 KB Output is correct
39 Correct 525 ms 33516 KB Output is correct
40 Correct 483 ms 30700 KB Output is correct
41 Correct 494 ms 33900 KB Output is correct
42 Correct 508 ms 36460 KB Output is correct
43 Correct 501 ms 30316 KB Output is correct
44 Correct 504 ms 36716 KB Output is correct
45 Correct 524 ms 36460 KB Output is correct
46 Correct 506 ms 31468 KB Output is correct
47 Correct 493 ms 31980 KB Output is correct
48 Correct 494 ms 32264 KB Output is correct
49 Correct 506 ms 35420 KB Output is correct
50 Correct 520 ms 37612 KB Output is correct
51 Correct 8 ms 9836 KB Output is correct
52 Correct 353 ms 21420 KB Output is correct
53 Correct 403 ms 21484 KB Output is correct
54 Correct 410 ms 21228 KB Output is correct
55 Correct 404 ms 21356 KB Output is correct
56 Correct 391 ms 21396 KB Output is correct
57 Correct 381 ms 21484 KB Output is correct
58 Correct 460 ms 25068 KB Output is correct
59 Correct 446 ms 25452 KB Output is correct
60 Correct 542 ms 24700 KB Output is correct
61 Correct 547 ms 24428 KB Output is correct
62 Correct 203 ms 38664 KB Output is correct
63 Correct 210 ms 38636 KB Output is correct
64 Correct 197 ms 38508 KB Output is correct
65 Correct 207 ms 38636 KB Output is correct
66 Correct 309 ms 29796 KB Output is correct
67 Correct 296 ms 29796 KB Output is correct
68 Correct 295 ms 30052 KB Output is correct
69 Correct 302 ms 29924 KB Output is correct
70 Correct 324 ms 29796 KB Output is correct
71 Correct 289 ms 29796 KB Output is correct
72 Correct 288 ms 29928 KB Output is correct
73 Correct 299 ms 28900 KB Output is correct
74 Correct 301 ms 29796 KB Output is correct
75 Correct 297 ms 29796 KB Output is correct
76 Correct 581 ms 28780 KB Output is correct
77 Correct 581 ms 27116 KB Output is correct
78 Correct 517 ms 31852 KB Output is correct
79 Correct 520 ms 29824 KB Output is correct
80 Correct 505 ms 37100 KB Output is correct
81 Correct 535 ms 33516 KB Output is correct
82 Correct 506 ms 33472 KB Output is correct
83 Correct 540 ms 30316 KB Output is correct
84 Correct 538 ms 36204 KB Output is correct
85 Correct 529 ms 34540 KB Output is correct
86 Correct 525 ms 29752 KB Output is correct
87 Correct 533 ms 31596 KB Output is correct
88 Correct 443 ms 32620 KB Output is correct
89 Correct 428 ms 28588 KB Output is correct
90 Correct 449 ms 28396 KB Output is correct
91 Correct 436 ms 30956 KB Output is correct
92 Correct 467 ms 29676 KB Output is correct
93 Correct 441 ms 29292 KB Output is correct
94 Correct 451 ms 28780 KB Output is correct
95 Correct 442 ms 29932 KB Output is correct
96 Correct 474 ms 28820 KB Output is correct
97 Correct 450 ms 30956 KB Output is correct