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답안 #131949

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
131949 2019-07-18T05:31:17 Z 이온조(#3189) Construction of Highway (JOI18_construction) C++14
100 / 100
 994 ms 16304 KB 
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;

struct maxseg {
	vector<int> T;
	void upd(int idx, int s, int e, int p, int v) {
		if(p < s || e < p) return;
		if(s == e) {
			T[idx] = v;
			return;
		}
		int m = s+e >> 1;
		upd(idx*2, s, m, p, v);
		upd(idx*2+1, m+1, e, p, v);
		T[idx] = max(T[idx*2], T[idx*2+1]);
	}
	int get(int idx, int s, int e, int l, int r) {
		if(r < s || e < l) return 0;
		if(l <= s && e <= r) return T[idx];
		int m = s+e >> 1;
		return max(get(idx*2, s, m, l, r), get(idx*2+1, m+1, e, l, r));
	}
	maxseg(int N) {
		T.resize(4*N);
	}
};

const int _N = 100009;
int A[_N], B[_N], C[_N], in[_N], ou[_N], t, d[_N], r[_N];
vector<int> adj[_N], CS;
long long F[_N];

void upd(int x, int y) {
	for(int i=x; i<=(int)CS.size(); i+=(i&-i)) F[i] += y;
}
long long get(int x) {
	long long ret = 0;
	for(int i=x; i>=1; i-=(i&-i)) ret += F[i];
	return ret;
}

void dfs(int x, int p, int d) {
	in[x] = ++t; ::d[x] = d;
	for(auto& it: adj[x]) dfs(it, x, d+1);
	ou[x] = t;
}

int main() {
	int N; scanf("%d",&N);
	for(int i=1; i<=N; i++) {
		scanf("%d",&C[i]);
		CS.push_back(C[i]);
	}
	sort(CS.begin(), CS.end());
	CS.resize(unique(CS.begin(), CS.end()) - CS.begin());
	for(int i=1; i<=N; i++) C[i] = lower_bound(CS.begin(), CS.end(), C[i]) - CS.begin() + 1;

	for(int i=1; i<N; i++) {
		scanf("%d%d",&A[i],&B[i]);
		adj[A[i]].push_back(B[i]);
	}
	dfs(1, 1, 1);
	maxseg seg(N);
	B[0] = 1; r[0] = 0;
	for(int i=1; i<N; i++) {
		int now = A[i], ni = seg.get(1, 1, N, in[now], ou[now]);
		vector<pii> S = {{ni, now}};
		while(1) {
			now = r[seg.get(1, 1, N, in[now], ou[now])];
			if(now == 0) break;
			ni = seg.get(1, 1, N, in[now], ou[now]);
			S.push_back({ni, now});
		}
		long long ans = 0;
		for(auto& it: S) {
			ans += 1LL * (d[it.second] - d[r[it.first]]) * get(C[B[it.first]] - 1);
			upd(C[B[it.first]], d[it.second] - d[r[it.first]]);
		}
		for(auto& it: S) {
			upd(C[B[it.first]], d[r[it.first]] - d[it.second]);
			r[it.first] = it.second;
		}
		r[i] = 0;
		seg.upd(1, 1, N, in[B[i]], i);
		printf("%lld\n", ans);
	}
	return 0;
}

Compilation message

construction.cpp: In member function 'void maxseg::upd(int, int, int, int, int)':
construction.cpp:13:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = s+e >> 1;
           ~^~
construction.cpp: In member function 'int maxseg::get(int, int, int, int, int)':
construction.cpp:21:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = s+e >> 1;
           ~^~
construction.cpp: In function 'int main()':
construction.cpp:50:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int N; scanf("%d",&N);
         ~~~~~^~~~~~~~~
construction.cpp:52:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&C[i]);
   ~~~~~^~~~~~~~~~~~
construction.cpp:60:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&A[i],&B[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 5 ms 2808 KB Output is correct
7 Correct 5 ms 2680 KB Output is correct
8 Correct 5 ms 2808 KB Output is correct
9 Correct 4 ms 2808 KB Output is correct
10 Correct 5 ms 2808 KB Output is correct
11 Correct 5 ms 2808 KB Output is correct
12 Correct 5 ms 2808 KB Output is correct
13 Correct 6 ms 2936 KB Output is correct
14 Correct 6 ms 2812 KB Output is correct
15 Correct 5 ms 2680 KB Output is correct
16 Correct 6 ms 2780 KB Output is correct
17 Correct 6 ms 2808 KB Output is correct
18 Correct 5 ms 2812 KB Output is correct
19 Correct 5 ms 2812 KB Output is correct
20 Correct 5 ms 2808 KB Output is correct
21 Correct 5 ms 2808 KB Output is correct
22 Correct 5 ms 2808 KB Output is correct
23 Correct 5 ms 2808 KB Output is correct
24 Correct 5 ms 2808 KB Output is correct
25 Correct 5 ms 2808 KB Output is correct
26 Correct 4 ms 2808 KB Output is correct
27 Correct 5 ms 2808 KB Output is correct
28 Correct 5 ms 2808 KB Output is correct
29 Correct 5 ms 2856 KB Output is correct
30 Correct 5 ms 2808 KB Output is correct
31 Correct 5 ms 2808 KB Output is correct
32 Correct 5 ms 2780 KB Output is correct
33 Correct 5 ms 2680 KB Output is correct
34 Correct 5 ms 2808 KB Output is correct
35 Correct 4 ms 2780 KB Output is correct
36 Correct 5 ms 2808 KB Output is correct
37 Correct 5 ms 2680 KB Output is correct
38 Correct 5 ms 2808 KB Output is correct
39 Correct 5 ms 2808 KB Output is correct
40 Correct 5 ms 2780 KB Output is correct
41 Correct 5 ms 2808 KB Output is correct
42 Correct 6 ms 2808 KB Output is correct
43 Correct 5 ms 2808 KB Output is correct
44 Correct 4 ms 2680 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 5 ms 2808 KB Output is correct
7 Correct 5 ms 2680 KB Output is correct
8 Correct 5 ms 2808 KB Output is correct
9 Correct 4 ms 2808 KB Output is correct
10 Correct 5 ms 2808 KB Output is correct
11 Correct 5 ms 2808 KB Output is correct
12 Correct 5 ms 2808 KB Output is correct
13 Correct 6 ms 2936 KB Output is correct
14 Correct 6 ms 2812 KB Output is correct
15 Correct 5 ms 2680 KB Output is correct
16 Correct 6 ms 2780 KB Output is correct
17 Correct 6 ms 2808 KB Output is correct
18 Correct 5 ms 2812 KB Output is correct
19 Correct 5 ms 2812 KB Output is correct
20 Correct 5 ms 2808 KB Output is correct
21 Correct 5 ms 2808 KB Output is correct
22 Correct 5 ms 2808 KB Output is correct
23 Correct 5 ms 2808 KB Output is correct
24 Correct 5 ms 2808 KB Output is correct
25 Correct 5 ms 2808 KB Output is correct
26 Correct 4 ms 2808 KB Output is correct
27 Correct 5 ms 2808 KB Output is correct
28 Correct 5 ms 2808 KB Output is correct
29 Correct 5 ms 2856 KB Output is correct
30 Correct 5 ms 2808 KB Output is correct
31 Correct 5 ms 2808 KB Output is correct
32 Correct 5 ms 2780 KB Output is correct
33 Correct 5 ms 2680 KB Output is correct
34 Correct 5 ms 2808 KB Output is correct
35 Correct 4 ms 2780 KB Output is correct
36 Correct 5 ms 2808 KB Output is correct
37 Correct 5 ms 2680 KB Output is correct
38 Correct 5 ms 2808 KB Output is correct
39 Correct 5 ms 2808 KB Output is correct
40 Correct 5 ms 2780 KB Output is correct
41 Correct 5 ms 2808 KB Output is correct
42 Correct 6 ms 2808 KB Output is correct
43 Correct 5 ms 2808 KB Output is correct
44 Correct 4 ms 2680 KB Output is correct
45 Correct 6 ms 2808 KB Output is correct
46 Correct 15 ms 3084 KB Output is correct
47 Correct 16 ms 2936 KB Output is correct
48 Correct 15 ms 2936 KB Output is correct
49 Correct 9 ms 3192 KB Output is correct
50 Correct 11 ms 3192 KB Output is correct
51 Correct 9 ms 3320 KB Output is correct
52 Correct 10 ms 3064 KB Output is correct
53 Correct 10 ms 3196 KB Output is correct
54 Correct 10 ms 3064 KB Output is correct
55 Correct 10 ms 3064 KB Output is correct
56 Correct 10 ms 3064 KB Output is correct
57 Correct 21 ms 2936 KB Output is correct
58 Correct 22 ms 3064 KB Output is correct
59 Correct 22 ms 3068 KB Output is correct
60 Correct 22 ms 3064 KB Output is correct
61 Correct 11 ms 3064 KB Output is correct
62 Correct 11 ms 3188 KB Output is correct
63 Correct 11 ms 3064 KB Output is correct
64 Correct 14 ms 2936 KB Output is correct
65 Correct 14 ms 2940 KB Output is correct
66 Correct 15 ms 2936 KB Output is correct
67 Correct 14 ms 2936 KB Output is correct
68 Correct 8 ms 3192 KB Output is correct
69 Correct 10 ms 3064 KB Output is correct
70 Correct 9 ms 3064 KB Output is correct
71 Correct 10 ms 3064 KB Output is correct
72 Correct 22 ms 3064 KB Output is correct
73 Correct 20 ms 2936 KB Output is correct
74 Correct 11 ms 3064 KB Output is correct
75 Correct 10 ms 3020 KB Output is correct
76 Correct 11 ms 3064 KB Output is correct
77 Correct 10 ms 3036 KB Output is correct
78 Correct 9 ms 2936 KB Output is correct
79 Correct 9 ms 2936 KB Output is correct
80 Correct 10 ms 3064 KB Output is correct
81 Correct 11 ms 3064 KB Output is correct
82 Correct 11 ms 3092 KB Output is correct
83 Correct 11 ms 3064 KB Output is correct
84 Correct 10 ms 3064 KB Output is correct
85 Correct 10 ms 3036 KB Output is correct
86 Correct 10 ms 3064 KB Output is correct

Subtask #3
84.0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 2680 KB Output is correct
6 Correct 5 ms 2808 KB Output is correct
7 Correct 5 ms 2680 KB Output is correct
8 Correct 5 ms 2808 KB Output is correct
9 Correct 4 ms 2808 KB Output is correct
10 Correct 5 ms 2808 KB Output is correct
11 Correct 5 ms 2808 KB Output is correct
12 Correct 5 ms 2808 KB Output is correct
13 Correct 6 ms 2936 KB Output is correct
14 Correct 6 ms 2812 KB Output is correct
15 Correct 5 ms 2680 KB Output is correct
16 Correct 6 ms 2780 KB Output is correct
17 Correct 6 ms 2808 KB Output is correct
18 Correct 5 ms 2812 KB Output is correct
19 Correct 5 ms 2812 KB Output is correct
20 Correct 5 ms 2808 KB Output is correct
21 Correct 5 ms 2808 KB Output is correct
22 Correct 5 ms 2808 KB Output is correct
23 Correct 5 ms 2808 KB Output is correct
24 Correct 5 ms 2808 KB Output is correct
25 Correct 5 ms 2808 KB Output is correct
26 Correct 4 ms 2808 KB Output is correct
27 Correct 5 ms 2808 KB Output is correct
28 Correct 5 ms 2808 KB Output is correct
29 Correct 5 ms 2856 KB Output is correct
30 Correct 5 ms 2808 KB Output is correct
31 Correct 5 ms 2808 KB Output is correct
32 Correct 5 ms 2780 KB Output is correct
33 Correct 5 ms 2680 KB Output is correct
34 Correct 5 ms 2808 KB Output is correct
35 Correct 4 ms 2780 KB Output is correct
36 Correct 5 ms 2808 KB Output is correct
37 Correct 5 ms 2680 KB Output is correct
38 Correct 5 ms 2808 KB Output is correct
39 Correct 5 ms 2808 KB Output is correct
40 Correct 5 ms 2780 KB Output is correct
41 Correct 5 ms 2808 KB Output is correct
42 Correct 6 ms 2808 KB Output is correct
43 Correct 5 ms 2808 KB Output is correct
44 Correct 4 ms 2680 KB Output is correct
45 Correct 6 ms 2808 KB Output is correct
46 Correct 15 ms 3084 KB Output is correct
47 Correct 16 ms 2936 KB Output is correct
48 Correct 15 ms 2936 KB Output is correct
49 Correct 9 ms 3192 KB Output is correct
50 Correct 11 ms 3192 KB Output is correct
51 Correct 9 ms 3320 KB Output is correct
52 Correct 10 ms 3064 KB Output is correct
53 Correct 10 ms 3196 KB Output is correct
54 Correct 10 ms 3064 KB Output is correct
55 Correct 10 ms 3064 KB Output is correct
56 Correct 10 ms 3064 KB Output is correct
57 Correct 21 ms 2936 KB Output is correct
58 Correct 22 ms 3064 KB Output is correct
59 Correct 22 ms 3068 KB Output is correct
60 Correct 22 ms 3064 KB Output is correct
61 Correct 11 ms 3064 KB Output is correct
62 Correct 11 ms 3188 KB Output is correct
63 Correct 11 ms 3064 KB Output is correct
64 Correct 14 ms 2936 KB Output is correct
65 Correct 14 ms 2940 KB Output is correct
66 Correct 15 ms 2936 KB Output is correct
67 Correct 14 ms 2936 KB Output is correct
68 Correct 8 ms 3192 KB Output is correct
69 Correct 10 ms 3064 KB Output is correct
70 Correct 9 ms 3064 KB Output is correct
71 Correct 10 ms 3064 KB Output is correct
72 Correct 22 ms 3064 KB Output is correct
73 Correct 20 ms 2936 KB Output is correct
74 Correct 11 ms 3064 KB Output is correct
75 Correct 10 ms 3020 KB Output is correct
76 Correct 11 ms 3064 KB Output is correct
77 Correct 10 ms 3036 KB Output is correct
78 Correct 9 ms 2936 KB Output is correct
79 Correct 9 ms 2936 KB Output is correct
80 Correct 10 ms 3064 KB Output is correct
81 Correct 11 ms 3064 KB Output is correct
82 Correct 11 ms 3092 KB Output is correct
83 Correct 11 ms 3064 KB Output is correct
84 Correct 10 ms 3064 KB Output is correct
85 Correct 10 ms 3036 KB Output is correct
86 Correct 10 ms 3064 KB Output is correct
87 Correct 37 ms 3448 KB Output is correct
88 Correct 126 ms 4968 KB Output is correct
89 Correct 621 ms 10020 KB Output is correct
90 Correct 548 ms 10288 KB Output is correct
91 Correct 553 ms 10224 KB Output is correct
92 Correct 173 ms 16112 KB Output is correct
93 Correct 202 ms 16304 KB Output is correct
94 Correct 174 ms 16272 KB Output is correct
95 Correct 211 ms 13104 KB Output is correct
96 Correct 236 ms 13296 KB Output is correct
97 Correct 227 ms 13040 KB Output is correct
98 Correct 231 ms 13040 KB Output is correct
99 Correct 252 ms 12524 KB Output is correct
100 Correct 983 ms 10684 KB Output is correct
101 Correct 986 ms 10604 KB Output is correct
102 Correct 990 ms 10648 KB Output is correct
103 Correct 994 ms 10636 KB Output is correct
104 Correct 256 ms 12480 KB Output is correct
105 Correct 256 ms 12400 KB Output is correct
106 Correct 249 ms 12400 KB Output is correct
107 Correct 469 ms 9324 KB Output is correct
108 Correct 516 ms 9296 KB Output is correct
109 Correct 547 ms 9584 KB Output is correct
110 Correct 153 ms 15344 KB Output is correct
111 Correct 216 ms 13052 KB Output is correct
112 Correct 195 ms 12272 KB Output is correct
113 Correct 193 ms 11632 KB Output is correct
114 Correct 949 ms 10648 KB Output is correct
115 Correct 938 ms 9852 KB Output is correct
116 Correct 237 ms 11692 KB Output is correct
117 Correct 222 ms 11120 KB Output is correct
118 Correct 215 ms 10820 KB Output is correct
119 Correct 217 ms 10692 KB Output is correct
120 Correct 212 ms 10476 KB Output is correct
121 Correct 196 ms 10076 KB Output is correct
122 Correct 190 ms 9864 KB Output is correct
123 Correct 257 ms 11256 KB Output is correct
124 Correct 254 ms 10920 KB Output is correct
125 Correct 252 ms 10552 KB Output is correct
126 Correct 238 ms 10480 KB Output is correct
127 Correct 230 ms 10208 KB Output is correct
128 Correct 240 ms 10072 KB Output is correct