답안 #293138

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
293138	2020-09-07T16:45:27 Z	amoo_safar	Simurgh (IOI17_simurgh)	C++17	51 / 100	220 ms	4584 KB

simurgh

#include "simurgh.h"

#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second
#define all(x) x.begin(), x.end()

using namespace std;

typedef pair<int, int> pii;
typedef long long ll;

const int N = 500 + 10;

vector<pii> G[N], H[N];
int mk[N], E[N], par[N], dep[N];

vector<int> R;

void DFS1(int u, int d = 0){
	mk[u] = 1;
	dep[u] = d;
	for(auto [adj, id] : G[u]){
		if(!mk[adj]){
			R.pb(id);
			par[adj] = u;
			DFS1(adj, d + 1);
			E[adj] = id;
			//cerr << "^ " << u << ' ' << adj << '\n';
		}
	}
}
ll f;
int mp[N * N];

int Ask(int rm, int is){
	if(mp[rm] != -1) return mp[rm];
	vector<int> R2 = R;
	for(auto &x : R2) if(x == rm) x = is;
	mp[rm] = count_common_roads(R2);
	//cerr << "Ask " << rm << ' ' << is << ' ' << mp[{rm, is}] << '\n';
	return mp[rm];
}

int sta[N * N];

vector<int> find_roads(int n, vector<int> u, vector<int> v) {
	vector<int> r(n - 1);
	int m = u.size();
	for(int i = 0; i < m; i++){
		G[u[i]].pb({v[i], i});
		G[v[i]].pb({u[i], i});
	}
	DFS1(0, 0);
	f = count_common_roads(R);
	E[0] = -1;
	par[0] = -1;
	//cerr << "F : " << f << '\n';

	memset(mp, -1, sizeof mp);
	vector<int> X;
	for(int i = 0; i < m; i++){
		if(dep[u[i]] > dep[v[i]]) swap(u[i], v[i]);
		if(E[v[i]] == i) continue;
		//memset(mp, -1, sizeof mp);
		
		X.clear();
		int nw = v[i];
		////cerr << '\n';
		while(nw != u[i]){
			////cerr << "# " << nw << '\n';
			assert(nw != 0);
			X.pb(E[nw]);
			nw = par[nw];
		}
		//cerr << "& " << u[i] << ' ' << v[i] << '\n';
		//cerr << "!! ";
			//cerr << x << ' ';
		//cerr << '\n';

		int mn = f;
		bool flg = false;
		int res;
		//cerr << "MTF : " << f << '\n';
		for(auto x : X){
			if(sta[x] && flg){
				if(sta[x] == 2){
					mn = min(mn, res);
					mp[x] = res;
				} else {
					mp[x] = res + 1;
					mn = min(mn, res + 1);
				}
				continue;
			}
			if(sta[x] == 1){
				mn = min(mn, Ask(x, i));
				res = Ask(x, i) - 1;
				flg = true;
			} else if(sta[x] == 2){
				mn = min(mn, Ask(x, i));
				res = Ask(x, i);
				flg = true;
			} else {
				mn = min(mn, Ask(x, i));
			}
		}
		
		//cerr << "mn : " << mn << '\n';

		bool f2 = (f != mn);
		for(auto x : X) if(mn != Ask(x, i)) f2 = true;
		if(f2){
			if(f == mn) sta[i] = 2;
			else sta[i] = 1;
			for(auto x : X){
				if(sta[x] == 0){
					if(Ask(x, i) == mn) sta[x] = 2;
					else sta[x] = 1;
				}
			}
		} else {
			sta[i] = 1;
			for(auto x : X) sta[x] = 1;
		}

		//for(int j = 0; j < m; j++) //cerr << sta[j];
		//cerr << '\n';
		for(auto x : X) mp[x] = -1;
	}
	vector<int> res;
	for(int i = 0; i < m; i++) if(sta[i] != 1) res.pb(i);
	//for(auto x : res)
		//cerr << "% " << x << '\n';

	assert(((int) res.size()) == n - 1);
	return res;
}

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1408 KB	correct
2	Correct	1 ms	1408 KB	correct
3	Correct	1 ms	1408 KB	correct
4	Correct	1 ms	1408 KB	correct
5	Correct	1 ms	1384 KB	correct
6	Correct	1 ms	1408 KB	correct
7	Correct	1 ms	1408 KB	correct
8	Correct	1 ms	1408 KB	correct
9	Correct	1 ms	1408 KB	correct
10	Correct	1 ms	1408 KB	correct
11	Correct	1 ms	1408 KB	correct
12	Correct	1 ms	1408 KB	correct
13	Correct	1 ms	1408 KB	correct

Subtask #2
17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1408 KB	correct
2	Correct	1 ms	1408 KB	correct
3	Correct	1 ms	1408 KB	correct
4	Correct	1 ms	1408 KB	correct
5	Correct	1 ms	1384 KB	correct
6	Correct	1 ms	1408 KB	correct
7	Correct	1 ms	1408 KB	correct
8	Correct	1 ms	1408 KB	correct
9	Correct	1 ms	1408 KB	correct
10	Correct	1 ms	1408 KB	correct
11	Correct	1 ms	1408 KB	correct
12	Correct	1 ms	1408 KB	correct
13	Correct	1 ms	1408 KB	correct
14	Correct	4 ms	1408 KB	correct
15	Correct	4 ms	1408 KB	correct
16	Correct	4 ms	1408 KB	correct
17	Correct	3 ms	1408 KB	correct
18	Correct	2 ms	1408 KB	correct
19	Correct	3 ms	1408 KB	correct
20	Correct	3 ms	1408 KB	correct
21	Correct	3 ms	1408 KB	correct
22	Correct	2 ms	1408 KB	correct
23	Correct	2 ms	1408 KB	correct
24	Correct	2 ms	1408 KB	correct
25	Correct	1 ms	1432 KB	correct
26	Correct	2 ms	1408 KB	correct
27	Correct	3 ms	1408 KB	correct
28	Correct	2 ms	1408 KB	correct
29	Correct	1 ms	1408 KB	correct
30	Correct	2 ms	1408 KB	correct
31	Correct	2 ms	1408 KB	correct
32	Correct	2 ms	1408 KB	correct
33	Correct	2 ms	1408 KB	correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1408 KB	correct
2	Correct	1 ms	1408 KB	correct
3	Correct	1 ms	1408 KB	correct
4	Correct	1 ms	1408 KB	correct
5	Correct	1 ms	1384 KB	correct
6	Correct	1 ms	1408 KB	correct
7	Correct	1 ms	1408 KB	correct
8	Correct	1 ms	1408 KB	correct
9	Correct	1 ms	1408 KB	correct
10	Correct	1 ms	1408 KB	correct
11	Correct	1 ms	1408 KB	correct
12	Correct	1 ms	1408 KB	correct
13	Correct	1 ms	1408 KB	correct
14	Correct	4 ms	1408 KB	correct
15	Correct	4 ms	1408 KB	correct
16	Correct	4 ms	1408 KB	correct
17	Correct	3 ms	1408 KB	correct
18	Correct	2 ms	1408 KB	correct
19	Correct	3 ms	1408 KB	correct
20	Correct	3 ms	1408 KB	correct
21	Correct	3 ms	1408 KB	correct
22	Correct	2 ms	1408 KB	correct
23	Correct	2 ms	1408 KB	correct
24	Correct	2 ms	1408 KB	correct
25	Correct	1 ms	1432 KB	correct
26	Correct	2 ms	1408 KB	correct
27	Correct	3 ms	1408 KB	correct
28	Correct	2 ms	1408 KB	correct
29	Correct	1 ms	1408 KB	correct
30	Correct	2 ms	1408 KB	correct
31	Correct	2 ms	1408 KB	correct
32	Correct	2 ms	1408 KB	correct
33	Correct	2 ms	1408 KB	correct
34	Correct	220 ms	2812 KB	correct
35	Correct	207 ms	2680 KB	correct
36	Correct	139 ms	2432 KB	correct
37	Correct	10 ms	1408 KB	correct
38	Correct	217 ms	2676 KB	correct
39	Correct	179 ms	2680 KB	correct
40	Correct	142 ms	2432 KB	correct
41	Correct	213 ms	2696 KB	correct
42	Correct	208 ms	2684 KB	correct
43	Correct	112 ms	2176 KB	correct
44	Correct	85 ms	1920 KB	correct
45	Correct	95 ms	2048 KB	correct
46	Correct	76 ms	1920 KB	correct
47	Correct	32 ms	1664 KB	correct
48	Correct	3 ms	1408 KB	correct
49	Correct	10 ms	1408 KB	correct
50	Correct	31 ms	1664 KB	correct
51	Correct	97 ms	2040 KB	correct
52	Correct	81 ms	1920 KB	correct
53	Correct	72 ms	2040 KB	correct
54	Correct	102 ms	2248 KB	correct
55	Correct	114 ms	2048 KB	correct
56	Correct	110 ms	2048 KB	correct
57	Correct	108 ms	2084 KB	correct

Subtask #4
0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1408 KB	correct
2	Correct	1 ms	1408 KB	correct
3	Incorrect	168 ms	4584 KB	WA in grader: NO
4	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	1408 KB	correct
2	Correct	1 ms	1408 KB	correct
3	Correct	1 ms	1408 KB	correct
4	Correct	1 ms	1408 KB	correct
5	Correct	1 ms	1384 KB	correct
6	Correct	1 ms	1408 KB	correct
7	Correct	1 ms	1408 KB	correct
8	Correct	1 ms	1408 KB	correct
9	Correct	1 ms	1408 KB	correct
10	Correct	1 ms	1408 KB	correct
11	Correct	1 ms	1408 KB	correct
12	Correct	1 ms	1408 KB	correct
13	Correct	1 ms	1408 KB	correct
14	Correct	4 ms	1408 KB	correct
15	Correct	4 ms	1408 KB	correct
16	Correct	4 ms	1408 KB	correct
17	Correct	3 ms	1408 KB	correct
18	Correct	2 ms	1408 KB	correct
19	Correct	3 ms	1408 KB	correct
20	Correct	3 ms	1408 KB	correct
21	Correct	3 ms	1408 KB	correct
22	Correct	2 ms	1408 KB	correct
23	Correct	2 ms	1408 KB	correct
24	Correct	2 ms	1408 KB	correct
25	Correct	1 ms	1432 KB	correct
26	Correct	2 ms	1408 KB	correct
27	Correct	3 ms	1408 KB	correct
28	Correct	2 ms	1408 KB	correct
29	Correct	1 ms	1408 KB	correct
30	Correct	2 ms	1408 KB	correct
31	Correct	2 ms	1408 KB	correct
32	Correct	2 ms	1408 KB	correct
33	Correct	2 ms	1408 KB	correct
34	Correct	220 ms	2812 KB	correct
35	Correct	207 ms	2680 KB	correct
36	Correct	139 ms	2432 KB	correct
37	Correct	10 ms	1408 KB	correct
38	Correct	217 ms	2676 KB	correct
39	Correct	179 ms	2680 KB	correct
40	Correct	142 ms	2432 KB	correct
41	Correct	213 ms	2696 KB	correct
42	Correct	208 ms	2684 KB	correct
43	Correct	112 ms	2176 KB	correct
44	Correct	85 ms	1920 KB	correct
45	Correct	95 ms	2048 KB	correct
46	Correct	76 ms	1920 KB	correct
47	Correct	32 ms	1664 KB	correct
48	Correct	3 ms	1408 KB	correct
49	Correct	10 ms	1408 KB	correct
50	Correct	31 ms	1664 KB	correct
51	Correct	97 ms	2040 KB	correct
52	Correct	81 ms	1920 KB	correct
53	Correct	72 ms	2040 KB	correct
54	Correct	102 ms	2248 KB	correct
55	Correct	114 ms	2048 KB	correct
56	Correct	110 ms	2048 KB	correct
57	Correct	108 ms	2084 KB	correct
58	Correct	1 ms	1408 KB	correct
59	Correct	1 ms	1408 KB	correct
60	Incorrect	168 ms	4584 KB	WA in grader: NO
61	Halted	0 ms	0 KB	-

답안 #293138

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 17.0 / 17.0

Subtask #3 21.0 / 21.0

Subtask #4 0 / 19.0

Subtask #5 0 / 30.0

Subtask #1
13.0 / 13.0

Subtask #2
17.0 / 17.0

Subtask #3
21.0 / 21.0

Subtask #4
0 / 19.0

Subtask #5
0 / 30.0