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답안 #256408

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
256408 2020-08-02T16:16:44 Z IvanC Construction of Highway (JOI18_construction) C++17
16 / 100
 2000 ms 83576 KB 
#include <bits/stdc++.h>
using namespace std;

typedef tuple<int,int,int> trinca;
typedef pair<int,int> ii;

const int MAXN = 1e5 + 10;

vector<int> grafo[MAXN];
vector<ii> quantities;
deque<trinca> componente[MAXN];
int pai[MAXN], szTree[MAXN], color[MAXN], aresta1[MAXN], aresta2[MAXN], N;
int chainId[MAXN], posChain[MAXN], headChain[MAXN], chainPtr, lastChain;

void dfs1(int v, int p){

	szTree[v] = 1;
	pai[v] = p;

	for(int u: grafo[v]){
		if(u == p) continue;
		dfs1(u, v);
		szTree[v] += szTree[u];
	}

}

void dfs2(int v, int p){

	int mx = -1, big = -1;
	if(chainId[v] == 0){
		chainId[v] = ++lastChain;
		headChain[chainId[v]] = v;
		posChain[v] = ++chainPtr;
	}

	componente[chainId[v]].push_back(make_tuple(color[v], posChain[v], posChain[v]));

	for(int u: grafo[v]){
		if(u == p) continue;
		if(szTree[u] > mx){
			mx = szTree[u];
			big = u;
		}
	}

	if(big != -1){
		chainId[big] = chainId[v];
		posChain[big] = ++chainPtr;
		dfs2(big, v);
	}

	for(int u: grafo[v]){
		if(u == p || u == big) continue;
		dfs2(u, v);
	}

}

long long query_up(int v){

	//printf("#######\nQuery %d\n", v);
	vector<ii> pares;
	int new_color = color[v];
	v = pai[v];
	long long ans = 0;

	while(v != -1){

		int thisChain = chainId[v];
		int thisHead = headChain[thisChain];
		int lo = posChain[thisHead];
		int hi = posChain[v];

		//printf("V %d tC %d tH %d (%d, %d)\n", v, thisChain, thisHead, lo, hi);

		while(!componente[thisChain].empty()){
			//printf("Loop\n");
			trinca davez = componente[thisChain].front();
			if(get<1>(davez) > hi){
				break;
			}
			else if(get<2>(davez) <= hi){
				int whichColor = get<0>(davez);
				int whichSize = get<2>(davez) - get<1>(davez) + 1;
				componente[thisChain].pop_front();
				quantities.push_back(ii(whichColor, whichSize));
			}
			else{
				int whichColor = get<0>(davez);
				int oldBegin = get<1>(davez);
				int oldEnd = get<2>(davez);
				componente[thisChain].pop_front();
				componente[thisChain].push_front(make_tuple(whichColor, hi + 1, oldEnd));
				int whichSize = hi - oldBegin + 1;
				quantities.push_back(ii(whichColor, whichSize));
			}
		}

		while(!quantities.empty()){
			if(!pares.empty() && pares.back().first == quantities.back().first){
				pares.back().second += quantities.back().second;
			}
			else{
				pares.push_back(quantities.back());
			}
			quantities.pop_back();
		}

		componente[thisChain].push_front(make_tuple(new_color, lo, hi));

		v = pai[thisHead];

	} 

	reverse(pares.begin(), pares.end());
	/*
	for(int i = 0; i < pares.size(); i++){
		printf("(%d, %d)", pares[i].first, pares[i].second);
	}
	printf("\n");
	printf("#######\n");*/

	for(int i = 0; i < pares.size(); i++){
		for(int j = i+1; j < pares.size(); j++){
			if(pares[i].first > pares[j].first){
				ans += 1LL*pares[i].second*pares[j].second;
			}
		}
	}

	return ans;

}

int main(){

	scanf("%d", &N);

	for(int i = 1; i <= N; i++){
		scanf("%d", &color[i]);
	}

	for(int i = 1; i < N; i++){
		scanf("%d %d", &aresta1[i], &aresta2[i]);
		grafo[aresta1[i]].push_back(aresta2[i]);
	}

	dfs1(1, -1);
	dfs2(1, -1);

	for(int i = 1; i < N; i++){

		int v = aresta2[i];
		long long ans = query_up(v);
		printf("%lld\n", ans);

	}

	return 0;

}

Compilation message

construction.cpp: In function 'long long int query_up(int)':
construction.cpp:124:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < pares.size(); i++){
                 ~~^~~~~~~~~~~~~~
construction.cpp:125:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = i+1; j < pares.size(); j++){
                    ~~^~~~~~~~~~~~~~
construction.cpp: In function 'int main()':
construction.cpp:138:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
construction.cpp:141:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &color[i]);
   ~~~~~^~~~~~~~~~~~~~~~~
construction.cpp:145:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &aresta1[i], &aresta2[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 47 ms 68472 KB Output is correct
2 Correct 49 ms 68472 KB Output is correct
3 Correct 47 ms 68472 KB Output is correct
4 Correct 48 ms 68472 KB Output is correct
5 Correct 49 ms 68472 KB Output is correct
6 Correct 48 ms 68472 KB Output is correct
7 Correct 49 ms 68476 KB Output is correct
8 Correct 48 ms 68480 KB Output is correct
9 Correct 50 ms 68472 KB Output is correct
10 Correct 50 ms 68472 KB Output is correct
11 Correct 49 ms 68472 KB Output is correct
12 Correct 48 ms 68472 KB Output is correct
13 Correct 49 ms 68472 KB Output is correct
14 Correct 48 ms 68472 KB Output is correct
15 Correct 48 ms 68600 KB Output is correct
16 Correct 48 ms 68480 KB Output is correct
17 Correct 49 ms 68472 KB Output is correct
18 Correct 48 ms 68532 KB Output is correct
19 Correct 48 ms 68472 KB Output is correct
20 Correct 48 ms 68480 KB Output is correct
21 Correct 49 ms 68472 KB Output is correct
22 Correct 50 ms 68480 KB Output is correct
23 Correct 50 ms 68472 KB Output is correct
24 Correct 49 ms 68472 KB Output is correct
25 Correct 50 ms 68472 KB Output is correct
26 Correct 49 ms 68608 KB Output is correct
27 Correct 50 ms 68472 KB Output is correct
28 Correct 48 ms 68472 KB Output is correct
29 Correct 48 ms 68472 KB Output is correct
30 Correct 50 ms 68480 KB Output is correct
31 Correct 49 ms 68472 KB Output is correct
32 Correct 49 ms 68476 KB Output is correct
33 Correct 52 ms 68472 KB Output is correct
34 Correct 50 ms 68472 KB Output is correct
35 Correct 49 ms 68472 KB Output is correct
36 Correct 51 ms 68484 KB Output is correct
37 Correct 49 ms 68472 KB Output is correct
38 Correct 62 ms 68472 KB Output is correct
39 Correct 49 ms 68472 KB Output is correct
40 Correct 60 ms 68472 KB Output is correct
41 Correct 56 ms 68472 KB Output is correct
42 Correct 50 ms 68472 KB Output is correct
43 Correct 55 ms 68472 KB Output is correct
44 Correct 52 ms 68472 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 47 ms 68472 KB Output is correct
2 Correct 49 ms 68472 KB Output is correct
3 Correct 47 ms 68472 KB Output is correct
4 Correct 48 ms 68472 KB Output is correct
5 Correct 49 ms 68472 KB Output is correct
6 Correct 48 ms 68472 KB Output is correct
7 Correct 49 ms 68476 KB Output is correct
8 Correct 48 ms 68480 KB Output is correct
9 Correct 50 ms 68472 KB Output is correct
10 Correct 50 ms 68472 KB Output is correct
11 Correct 49 ms 68472 KB Output is correct
12 Correct 48 ms 68472 KB Output is correct
13 Correct 49 ms 68472 KB Output is correct
14 Correct 48 ms 68472 KB Output is correct
15 Correct 48 ms 68600 KB Output is correct
16 Correct 48 ms 68480 KB Output is correct
17 Correct 49 ms 68472 KB Output is correct
18 Correct 48 ms 68532 KB Output is correct
19 Correct 48 ms 68472 KB Output is correct
20 Correct 48 ms 68480 KB Output is correct
21 Correct 49 ms 68472 KB Output is correct
22 Correct 50 ms 68480 KB Output is correct
23 Correct 50 ms 68472 KB Output is correct
24 Correct 49 ms 68472 KB Output is correct
25 Correct 50 ms 68472 KB Output is correct
26 Correct 49 ms 68608 KB Output is correct
27 Correct 50 ms 68472 KB Output is correct
28 Correct 48 ms 68472 KB Output is correct
29 Correct 48 ms 68472 KB Output is correct
30 Correct 50 ms 68480 KB Output is correct
31 Correct 49 ms 68472 KB Output is correct
32 Correct 49 ms 68476 KB Output is correct
33 Correct 52 ms 68472 KB Output is correct
34 Correct 50 ms 68472 KB Output is correct
35 Correct 49 ms 68472 KB Output is correct
36 Correct 51 ms 68484 KB Output is correct
37 Correct 49 ms 68472 KB Output is correct
38 Correct 62 ms 68472 KB Output is correct
39 Correct 49 ms 68472 KB Output is correct
40 Correct 60 ms 68472 KB Output is correct
41 Correct 56 ms 68472 KB Output is correct
42 Correct 50 ms 68472 KB Output is correct
43 Correct 55 ms 68472 KB Output is correct
44 Correct 52 ms 68472 KB Output is correct
45 Correct 54 ms 68480 KB Output is correct
46 Correct 68 ms 68600 KB Output is correct
47 Correct 62 ms 68636 KB Output is correct
48 Correct 55 ms 68600 KB Output is correct
49 Correct 54 ms 69112 KB Output is correct
50 Correct 57 ms 68984 KB Output is correct
51 Correct 53 ms 68984 KB Output is correct
52 Correct 58 ms 68932 KB Output is correct
53 Correct 63 ms 68924 KB Output is correct
54 Correct 64 ms 68984 KB Output is correct
55 Correct 67 ms 68856 KB Output is correct
56 Correct 55 ms 68856 KB Output is correct
57 Correct 61 ms 68584 KB Output is correct
58 Correct 59 ms 68728 KB Output is correct
59 Correct 60 ms 68608 KB Output is correct
60 Correct 59 ms 68604 KB Output is correct
61 Correct 54 ms 68864 KB Output is correct
62 Correct 55 ms 68856 KB Output is correct
63 Correct 55 ms 68876 KB Output is correct
64 Correct 57 ms 68592 KB Output is correct
65 Correct 56 ms 68688 KB Output is correct
66 Correct 57 ms 68600 KB Output is correct
67 Correct 57 ms 68608 KB Output is correct
68 Correct 57 ms 69040 KB Output is correct
69 Correct 60 ms 68856 KB Output is correct
70 Correct 65 ms 68856 KB Output is correct
71 Correct 52 ms 68856 KB Output is correct
72 Correct 61 ms 68620 KB Output is correct
73 Correct 64 ms 68600 KB Output is correct
74 Correct 60 ms 68812 KB Output is correct
75 Correct 54 ms 68728 KB Output is correct
76 Correct 56 ms 68704 KB Output is correct
77 Correct 56 ms 68728 KB Output is correct
78 Correct 55 ms 68728 KB Output is correct
79 Correct 58 ms 68704 KB Output is correct
80 Correct 56 ms 68728 KB Output is correct
81 Correct 55 ms 68728 KB Output is correct
82 Correct 69 ms 68732 KB Output is correct
83 Correct 54 ms 68728 KB Output is correct
84 Correct 54 ms 68796 KB Output is correct
85 Correct 55 ms 68728 KB Output is correct
86 Correct 70 ms 68728 KB Output is correct

Subtask #3
0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 47 ms 68472 KB Output is correct
2 Correct 49 ms 68472 KB Output is correct
3 Correct 47 ms 68472 KB Output is correct
4 Correct 48 ms 68472 KB Output is correct
5 Correct 49 ms 68472 KB Output is correct
6 Correct 48 ms 68472 KB Output is correct
7 Correct 49 ms 68476 KB Output is correct
8 Correct 48 ms 68480 KB Output is correct
9 Correct 50 ms 68472 KB Output is correct
10 Correct 50 ms 68472 KB Output is correct
11 Correct 49 ms 68472 KB Output is correct
12 Correct 48 ms 68472 KB Output is correct
13 Correct 49 ms 68472 KB Output is correct
14 Correct 48 ms 68472 KB Output is correct
15 Correct 48 ms 68600 KB Output is correct
16 Correct 48 ms 68480 KB Output is correct
17 Correct 49 ms 68472 KB Output is correct
18 Correct 48 ms 68532 KB Output is correct
19 Correct 48 ms 68472 KB Output is correct
20 Correct 48 ms 68480 KB Output is correct
21 Correct 49 ms 68472 KB Output is correct
22 Correct 50 ms 68480 KB Output is correct
23 Correct 50 ms 68472 KB Output is correct
24 Correct 49 ms 68472 KB Output is correct
25 Correct 50 ms 68472 KB Output is correct
26 Correct 49 ms 68608 KB Output is correct
27 Correct 50 ms 68472 KB Output is correct
28 Correct 48 ms 68472 KB Output is correct
29 Correct 48 ms 68472 KB Output is correct
30 Correct 50 ms 68480 KB Output is correct
31 Correct 49 ms 68472 KB Output is correct
32 Correct 49 ms 68476 KB Output is correct
33 Correct 52 ms 68472 KB Output is correct
34 Correct 50 ms 68472 KB Output is correct
35 Correct 49 ms 68472 KB Output is correct
36 Correct 51 ms 68484 KB Output is correct
37 Correct 49 ms 68472 KB Output is correct
38 Correct 62 ms 68472 KB Output is correct
39 Correct 49 ms 68472 KB Output is correct
40 Correct 60 ms 68472 KB Output is correct
41 Correct 56 ms 68472 KB Output is correct
42 Correct 50 ms 68472 KB Output is correct
43 Correct 55 ms 68472 KB Output is correct
44 Correct 52 ms 68472 KB Output is correct
45 Correct 54 ms 68480 KB Output is correct
46 Correct 68 ms 68600 KB Output is correct
47 Correct 62 ms 68636 KB Output is correct
48 Correct 55 ms 68600 KB Output is correct
49 Correct 54 ms 69112 KB Output is correct
50 Correct 57 ms 68984 KB Output is correct
51 Correct 53 ms 68984 KB Output is correct
52 Correct 58 ms 68932 KB Output is correct
53 Correct 63 ms 68924 KB Output is correct
54 Correct 64 ms 68984 KB Output is correct
55 Correct 67 ms 68856 KB Output is correct
56 Correct 55 ms 68856 KB Output is correct
57 Correct 61 ms 68584 KB Output is correct
58 Correct 59 ms 68728 KB Output is correct
59 Correct 60 ms 68608 KB Output is correct
60 Correct 59 ms 68604 KB Output is correct
61 Correct 54 ms 68864 KB Output is correct
62 Correct 55 ms 68856 KB Output is correct
63 Correct 55 ms 68876 KB Output is correct
64 Correct 57 ms 68592 KB Output is correct
65 Correct 56 ms 68688 KB Output is correct
66 Correct 57 ms 68600 KB Output is correct
67 Correct 57 ms 68608 KB Output is correct
68 Correct 57 ms 69040 KB Output is correct
69 Correct 60 ms 68856 KB Output is correct
70 Correct 65 ms 68856 KB Output is correct
71 Correct 52 ms 68856 KB Output is correct
72 Correct 61 ms 68620 KB Output is correct
73 Correct 64 ms 68600 KB Output is correct
74 Correct 60 ms 68812 KB Output is correct
75 Correct 54 ms 68728 KB Output is correct
76 Correct 56 ms 68704 KB Output is correct
77 Correct 56 ms 68728 KB Output is correct
78 Correct 55 ms 68728 KB Output is correct
79 Correct 58 ms 68704 KB Output is correct
80 Correct 56 ms 68728 KB Output is correct
81 Correct 55 ms 68728 KB Output is correct
82 Correct 69 ms 68732 KB Output is correct
83 Correct 54 ms 68728 KB Output is correct
84 Correct 54 ms 68796 KB Output is correct
85 Correct 55 ms 68728 KB Output is correct
86 Correct 70 ms 68728 KB Output is correct
87 Correct 69 ms 68984 KB Output is correct
88 Correct 96 ms 69940 KB Output is correct
89 Correct 254 ms 73308 KB Output is correct
90 Correct 240 ms 73208 KB Output is correct
91 Correct 253 ms 73288 KB Output is correct
92 Correct 180 ms 83576 KB Output is correct
93 Correct 173 ms 83576 KB Output is correct
94 Correct 167 ms 83544 KB Output is correct
95 Correct 1458 ms 78620 KB Output is correct
96 Execution timed out 2080 ms 78580 KB Time limit exceeded
97 Halted 0 ms 0 KB -