oj.uz

Submission #678853

# Submission time Handle Problem Language Result Execution time Memory
678853 2023-01-06T17:33:24 Z rainboy Construction of Highway (JOI18_construction) C
100 / 100
 258 ms 5708 KB 
#include <stdio.h>

#define N	100100

unsigned int X = 12345;

int rand_() {
	return (X *= 3) >> 1;
}

int aa[N], n;

void sort(int *ii, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, i_ = ii[l + rand_() % (r - l)], tmp;

		while (j < k)
			if (aa[ii[j]] == aa[i_])
				j++;
			else if (aa[ii[j]] < aa[i_]) {
				tmp = ii[i], ii[i] = ii[j], ii[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = ii[j], ii[j] = ii[k], ii[k] = tmp;
			}
		sort(ii, l, i);
		l = k;
	}
}

int ft[N];

void update(int i, int x) {
	while (i <= n) {
		ft[i] += x;
		i |= i + 1;
	}
}

int query(int i) {
	int x = 0;

	while (i >= 0) {
		x += ft[i];
		i &= i + 1, i--;
	}
	return x;
}

int pp[N], tt[N][2], sz[N];

int dir(int u) {
	return tt[pp[u]][0] == u ? 0 : 1;
}

int isroot(int u) {
	return tt[pp[u]][dir(u)] != u;
}

void pul(int u) {
	sz[u] = sz[tt[u][0]] + sz[tt[u][1]] + 1;
}

void attach(int p, int u, int d) {
	pp[u] = p;
	if (p)
		tt[p][d] = u, pul(p);
}

void rotate(int u) {
	int v = pp[u], w = pp[v], du = dir(u), dv = dir(v), is = isroot(v);

	attach(v, tt[u][du ^ 1], du), attach(u, v, du ^ 1);
	if (is)
		pp[u] = w;
	else
		attach(w, u, dv);
}

void splay(int u) {
	while (!isroot(u)) {
		int v = pp[u];

		if (isroot(v))
			rotate(u);
		else
			rotate(dir(u) == dir(v) ? v : u), rotate(u);
	}
}

int root(int u) {
	return isroot(u) ? u : root(pp[u]);
}

int aa_[N], kk_[N], n_;

void expose(int u) {
	int v, w;

	n_ = 0;
	for (v = u, w = 0; v; w = v, v = pp[v]) {
		int a, k;

		a = aa[root(v)];
		splay(v);
		k = sz[tt[v][0]] + 1;
		aa_[n_] = a, kk_[n_] = k, n_++;
		aa[tt[v][1]] = a;
		attach(v, w, 1);
	}
	splay(u);
}

long long solve() {
	int i;
	long long ans;

	ans = 0;
	for (i = 0; i < n_; i++) {
		ans += (long long) query(aa_[i] - 1) * kk_[i];
		update(aa_[i], kk_[i]);
	}
	for (i = 0; i < n_; i++)
		update(aa_[i], -kk_[i]);
	return ans;
}

int main() {
	static int ii[N];
	int h, i, j, a;

	scanf("%d", &n);
	for (i = 1; i <= n; i++)
		scanf("%d", &aa[i]);
	for (i = 0; i <= n; i++)
		ii[i] = i;
	sort(ii, 0, n + 1);
	for (i = 0, a = 0; i <= n; i++)
		aa[ii[i]] = i == n || aa[ii[i + 1]] != aa[ii[i]] ? a++ : a;
	sz[1] = 1;
	for (h = 0; h < n - 1; h++) {
		scanf("%d%d", &i, &j);
		expose(i);
		attach(j, i, 0);
		printf("%lld\n", solve());
	}
	return 0;
}

Compilation message

construction.c: In function 'main':
construction.c:133:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  133 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
construction.c:135:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  135 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~
construction.c:143:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  143 |   scanf("%d%d", &i, &j);
      |   ^~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 308 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 288 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 304 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 300 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 304 KB Output is correct
42 Correct 1 ms 300 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 308 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 288 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 304 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 300 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 304 KB Output is correct
42 Correct 1 ms 300 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 5 ms 520 KB Output is correct
47 Correct 5 ms 468 KB Output is correct
48 Correct 4 ms 468 KB Output is correct
49 Correct 3 ms 432 KB Output is correct
50 Correct 4 ms 468 KB Output is correct
51 Correct 4 ms 468 KB Output is correct
52 Correct 3 ms 484 KB Output is correct
53 Correct 3 ms 468 KB Output is correct
54 Correct 3 ms 432 KB Output is correct
55 Correct 3 ms 480 KB Output is correct
56 Correct 3 ms 468 KB Output is correct
57 Correct 6 ms 468 KB Output is correct
58 Correct 6 ms 468 KB Output is correct
59 Correct 6 ms 524 KB Output is correct
60 Correct 7 ms 468 KB Output is correct
61 Correct 3 ms 468 KB Output is correct
62 Correct 4 ms 432 KB Output is correct
63 Correct 4 ms 468 KB Output is correct
64 Correct 4 ms 468 KB Output is correct
65 Correct 4 ms 480 KB Output is correct
66 Correct 4 ms 468 KB Output is correct
67 Correct 4 ms 492 KB Output is correct
68 Correct 2 ms 440 KB Output is correct
69 Correct 3 ms 492 KB Output is correct
70 Correct 2 ms 468 KB Output is correct
71 Correct 2 ms 468 KB Output is correct
72 Correct 6 ms 468 KB Output is correct
73 Correct 6 ms 480 KB Output is correct
74 Correct 3 ms 468 KB Output is correct
75 Correct 3 ms 468 KB Output is correct
76 Correct 3 ms 468 KB Output is correct
77 Correct 3 ms 468 KB Output is correct
78 Correct 3 ms 468 KB Output is correct
79 Correct 4 ms 432 KB Output is correct
80 Correct 3 ms 436 KB Output is correct
81 Correct 5 ms 468 KB Output is correct
82 Correct 4 ms 468 KB Output is correct
83 Correct 4 ms 468 KB Output is correct
84 Correct 3 ms 468 KB Output is correct
85 Correct 4 ms 436 KB Output is correct
86 Correct 3 ms 480 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 308 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 288 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 304 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 300 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 304 KB Output is correct
42 Correct 1 ms 300 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 5 ms 520 KB Output is correct
47 Correct 5 ms 468 KB Output is correct
48 Correct 4 ms 468 KB Output is correct
49 Correct 3 ms 432 KB Output is correct
50 Correct 4 ms 468 KB Output is correct
51 Correct 4 ms 468 KB Output is correct
52 Correct 3 ms 484 KB Output is correct
53 Correct 3 ms 468 KB Output is correct
54 Correct 3 ms 432 KB Output is correct
55 Correct 3 ms 480 KB Output is correct
56 Correct 3 ms 468 KB Output is correct
57 Correct 6 ms 468 KB Output is correct
58 Correct 6 ms 468 KB Output is correct
59 Correct 6 ms 524 KB Output is correct
60 Correct 7 ms 468 KB Output is correct
61 Correct 3 ms 468 KB Output is correct
62 Correct 4 ms 432 KB Output is correct
63 Correct 4 ms 468 KB Output is correct
64 Correct 4 ms 468 KB Output is correct
65 Correct 4 ms 480 KB Output is correct
66 Correct 4 ms 468 KB Output is correct
67 Correct 4 ms 492 KB Output is correct
68 Correct 2 ms 440 KB Output is correct
69 Correct 3 ms 492 KB Output is correct
70 Correct 2 ms 468 KB Output is correct
71 Correct 2 ms 468 KB Output is correct
72 Correct 6 ms 468 KB Output is correct
73 Correct 6 ms 480 KB Output is correct
74 Correct 3 ms 468 KB Output is correct
75 Correct 3 ms 468 KB Output is correct
76 Correct 3 ms 468 KB Output is correct
77 Correct 3 ms 468 KB Output is correct
78 Correct 3 ms 468 KB Output is correct
79 Correct 4 ms 432 KB Output is correct
80 Correct 3 ms 436 KB Output is correct
81 Correct 5 ms 468 KB Output is correct
82 Correct 4 ms 468 KB Output is correct
83 Correct 4 ms 468 KB Output is correct
84 Correct 3 ms 468 KB Output is correct
85 Correct 4 ms 436 KB Output is correct
86 Correct 3 ms 480 KB Output is correct
87 Correct 11 ms 800 KB Output is correct
88 Correct 37 ms 1792 KB Output is correct
89 Correct 141 ms 5376 KB Output is correct
90 Correct 145 ms 5396 KB Output is correct
91 Correct 143 ms 5324 KB Output is correct
92 Correct 64 ms 5372 KB Output is correct
93 Correct 65 ms 5372 KB Output is correct
94 Correct 61 ms 5212 KB Output is correct
95 Correct 66 ms 5212 KB Output is correct
96 Correct 69 ms 5636 KB Output is correct
97 Correct 85 ms 5664 KB Output is correct
98 Correct 70 ms 5708 KB Output is correct
99 Correct 80 ms 5452 KB Output is correct
100 Correct 221 ms 5084 KB Output is correct
101 Correct 258 ms 5456 KB Output is correct
102 Correct 249 ms 5320 KB Output is correct
103 Correct 255 ms 5420 KB Output is correct
104 Correct 117 ms 5420 KB Output is correct
105 Correct 108 ms 5348 KB Output is correct
106 Correct 108 ms 5376 KB Output is correct
107 Correct 128 ms 4144 KB Output is correct
108 Correct 132 ms 4356 KB Output is correct
109 Correct 143 ms 4816 KB Output is correct
110 Correct 61 ms 4244 KB Output is correct
111 Correct 89 ms 5248 KB Output is correct
112 Correct 60 ms 4832 KB Output is correct
113 Correct 62 ms 4428 KB Output is correct
114 Correct 220 ms 5012 KB Output is correct
115 Correct 225 ms 4396 KB Output is correct
116 Correct 96 ms 4432 KB Output is correct
117 Correct 77 ms 5216 KB Output is correct
118 Correct 78 ms 5072 KB Output is correct
119 Correct 76 ms 5068 KB Output is correct
120 Correct 65 ms 4332 KB Output is correct
121 Correct 65 ms 4376 KB Output is correct
122 Correct 84 ms 4428 KB Output is correct
123 Correct 107 ms 5148 KB Output is correct
124 Correct 106 ms 5076 KB Output is correct
125 Correct 128 ms 5180 KB Output is correct
126 Correct 108 ms 4512 KB Output is correct
127 Correct 94 ms 4440 KB Output is correct
128 Correct 94 ms 4444 KB Output is correct