oj.uz

Submission #219770

# Submission time Handle Problem Language Result Execution time Memory
219770 2020-04-06T10:15:37 Z patrikpavic2 Construction of Highway (JOI18_construction) C++17
100 / 100
 826 ms 24176 KB 
#include <cstdio>
#include <vector>
#include <algorithm>

#define X first
#define Y second
#define PB push_back

using namespace std;

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

const int N = 1e5 + 500;
const int LOG = 17;
const int OFF = (1 << LOG);

ll inv, ans[N];
vector < int > saz, v[N];
int loga[N], siz = 0, koga[N], C[N], n, cur;
int A[N], B[N], L[N], R[N];
int vrh[N], dep[N], dno[N], par[N][LOG], lan[N];

void add(int x, int y){
	siz += y;
	for(; x < N ; x += x & -x)
		loga[x] += y;
}

int query(int x){
	int ret = 0;
	for(; x ; x -= x & -x)
		ret += loga[x];
	return ret;
}


void dfs(int x,int lst){
	par[x][0] = lst; dep[x] = dep[lst] + 1;
	L[x] = cur++;
	for(int y : v[x])
		dfs(y, x);
	R[x] = cur - 1;
}

void precompute(){
	for(int j = 1;j < LOG;j++)
		for(int i = 1;i <= n;i++)
			par[i][j] = par[par[i][j - 1]][j - 1];
}

int digni(int x,int k){
	for(int i = LOG - 1;i >= 0;i--)
		if(k & (1 << i)) x = par[x][i];
	return x;
}

int tour[2 * OFF];

void update(int i,int x){
	tour[i + OFF] = x;
	for(i = (i + OFF) / 2; i ; i /= 2)
		tour[i] = max(tour[2 * i], tour[2 * i + 1]);
}

int query(int i,int a,int b,int lo,int hi){
	if(lo <= a && b <= hi) return tour[i];
	if(a > hi || b < lo) return 0;
	return max(query(2 * i, a, (a + b) / 2, lo, hi), query(2 * i + 1, (a + b) / 2 + 1, b, lo, hi));
}

int gdje(int i){
	return query(1, 0, OFF - 1, L[i], R[i]);
}

ll odradi(int st){
	int x = gdje(st);
	ll inv = 0;
	vector < pii > brisi;
	for(;;){
		inv += (ll)query(C[dno[x]] - 1) * (dep[st] - dep[vrh[x]] + 1);
		add(C[dno[x]], dep[st] - dep[vrh[x]] + 1);
		brisi.PB({C[dno[x]], dep[st] - dep[vrh[x]] + 1});
		int ol_vrh = vrh[x];
		if(st != dno[x]){
			vrh[x] = digni(dno[x], dep[dno[x]] - dep[st] - 1);
		}
		if(!(ol_vrh - 1)) break;
		st = par[ol_vrh][0];
		x = gdje(st);
	}
	for(pii tmp : brisi)
		add(tmp.X, -tmp.Y);
	return inv;
}

int main(){
	scanf("%d", &n);
	for(int i = 1;i <= n;i++){
		scanf("%d", C + i), saz.PB(C[i]);
	}
	sort(saz.begin(), saz.end());
	for(int i = 1;i <= n;i++)
		C[i] = lower_bound(saz.begin(), saz.end(), C[i]) - saz.begin() + 1;
	for(int i = 1;i < n;i++){
		scanf("%d%d", A + i, B + i);
		v[A[i]].PB(B[i]);
	}
	dfs(1, 1); precompute();
	vrh[0] = 1, dno[0] = 1;
	for(int i = 1;i < n;i++){
		printf("%lld\n", odradi(A[i]));
		dno[i] = B[i], vrh[i] = 1;
		update(L[B[i]], i);
	}
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:98:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
construction.cpp:100:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", C + i), saz.PB(C[i]);
   ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
construction.cpp:106:8: 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

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2816 KB Output is correct
2 Correct 6 ms 2816 KB Output is correct
3 Correct 6 ms 2816 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2944 KB Output is correct
6 Correct 7 ms 2944 KB Output is correct
7 Correct 7 ms 2816 KB Output is correct
8 Correct 6 ms 2944 KB Output is correct
9 Correct 7 ms 2944 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 6 ms 2816 KB Output is correct
12 Correct 6 ms 2816 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 7 ms 2944 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 7 ms 2944 KB Output is correct
17 Correct 7 ms 2816 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 7 ms 2816 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 7 ms 2816 KB Output is correct
22 Correct 7 ms 2816 KB Output is correct
23 Correct 7 ms 2816 KB Output is correct
24 Correct 7 ms 2816 KB Output is correct
25 Correct 7 ms 2816 KB Output is correct
26 Correct 6 ms 2816 KB Output is correct
27 Correct 6 ms 2816 KB Output is correct
28 Correct 7 ms 2944 KB Output is correct
29 Correct 6 ms 2816 KB Output is correct
30 Correct 9 ms 2944 KB Output is correct
31 Correct 7 ms 2944 KB Output is correct
32 Correct 6 ms 2816 KB Output is correct
33 Correct 6 ms 2816 KB Output is correct
34 Correct 6 ms 2816 KB Output is correct
35 Correct 6 ms 2816 KB Output is correct
36 Correct 6 ms 2816 KB Output is correct
37 Correct 6 ms 2816 KB Output is correct
38 Correct 6 ms 2816 KB Output is correct
39 Correct 6 ms 2816 KB Output is correct
40 Correct 7 ms 2816 KB Output is correct
41 Correct 7 ms 2816 KB Output is correct
42 Correct 6 ms 2816 KB Output is correct
43 Correct 7 ms 2816 KB Output is correct
44 Correct 7 ms 2816 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2816 KB Output is correct
2 Correct 6 ms 2816 KB Output is correct
3 Correct 6 ms 2816 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2944 KB Output is correct
6 Correct 7 ms 2944 KB Output is correct
7 Correct 7 ms 2816 KB Output is correct
8 Correct 6 ms 2944 KB Output is correct
9 Correct 7 ms 2944 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 6 ms 2816 KB Output is correct
12 Correct 6 ms 2816 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 7 ms 2944 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 7 ms 2944 KB Output is correct
17 Correct 7 ms 2816 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 7 ms 2816 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 7 ms 2816 KB Output is correct
22 Correct 7 ms 2816 KB Output is correct
23 Correct 7 ms 2816 KB Output is correct
24 Correct 7 ms 2816 KB Output is correct
25 Correct 7 ms 2816 KB Output is correct
26 Correct 6 ms 2816 KB Output is correct
27 Correct 6 ms 2816 KB Output is correct
28 Correct 7 ms 2944 KB Output is correct
29 Correct 6 ms 2816 KB Output is correct
30 Correct 9 ms 2944 KB Output is correct
31 Correct 7 ms 2944 KB Output is correct
32 Correct 6 ms 2816 KB Output is correct
33 Correct 6 ms 2816 KB Output is correct
34 Correct 6 ms 2816 KB Output is correct
35 Correct 6 ms 2816 KB Output is correct
36 Correct 6 ms 2816 KB Output is correct
37 Correct 6 ms 2816 KB Output is correct
38 Correct 6 ms 2816 KB Output is correct
39 Correct 6 ms 2816 KB Output is correct
40 Correct 7 ms 2816 KB Output is correct
41 Correct 7 ms 2816 KB Output is correct
42 Correct 6 ms 2816 KB Output is correct
43 Correct 7 ms 2816 KB Output is correct
44 Correct 7 ms 2816 KB Output is correct
45 Correct 8 ms 2944 KB Output is correct
46 Correct 16 ms 3456 KB Output is correct
47 Correct 16 ms 3328 KB Output is correct
48 Correct 16 ms 3328 KB Output is correct
49 Correct 11 ms 3584 KB Output is correct
50 Correct 11 ms 3584 KB Output is correct
51 Correct 11 ms 3584 KB Output is correct
52 Correct 11 ms 3456 KB Output is correct
53 Correct 14 ms 3668 KB Output is correct
54 Correct 11 ms 3456 KB Output is correct
55 Correct 11 ms 3456 KB Output is correct
56 Correct 12 ms 3584 KB Output is correct
57 Correct 23 ms 3328 KB Output is correct
58 Correct 24 ms 3328 KB Output is correct
59 Correct 23 ms 3320 KB Output is correct
60 Correct 23 ms 3328 KB Output is correct
61 Correct 12 ms 3456 KB Output is correct
62 Correct 12 ms 3456 KB Output is correct
63 Correct 13 ms 3668 KB Output is correct
64 Correct 14 ms 3328 KB Output is correct
65 Correct 15 ms 3376 KB Output is correct
66 Correct 16 ms 3328 KB Output is correct
67 Correct 16 ms 3328 KB Output is correct
68 Correct 10 ms 3584 KB Output is correct
69 Correct 12 ms 3456 KB Output is correct
70 Correct 11 ms 3456 KB Output is correct
71 Correct 11 ms 3456 KB Output is correct
72 Correct 23 ms 3328 KB Output is correct
73 Correct 23 ms 3328 KB Output is correct
74 Correct 12 ms 3456 KB Output is correct
75 Correct 12 ms 3456 KB Output is correct
76 Correct 12 ms 3456 KB Output is correct
77 Correct 11 ms 3328 KB Output is correct
78 Correct 11 ms 3328 KB Output is correct
79 Correct 11 ms 3328 KB Output is correct
80 Correct 11 ms 3328 KB Output is correct
81 Correct 12 ms 3456 KB Output is correct
82 Correct 14 ms 3328 KB Output is correct
83 Correct 12 ms 3328 KB Output is correct
84 Correct 12 ms 3456 KB Output is correct
85 Correct 12 ms 3328 KB Output is correct
86 Correct 12 ms 3456 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2816 KB Output is correct
2 Correct 6 ms 2816 KB Output is correct
3 Correct 6 ms 2816 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2944 KB Output is correct
6 Correct 7 ms 2944 KB Output is correct
7 Correct 7 ms 2816 KB Output is correct
8 Correct 6 ms 2944 KB Output is correct
9 Correct 7 ms 2944 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 6 ms 2816 KB Output is correct
12 Correct 6 ms 2816 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 7 ms 2944 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 7 ms 2944 KB Output is correct
17 Correct 7 ms 2816 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 7 ms 2816 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 7 ms 2816 KB Output is correct
22 Correct 7 ms 2816 KB Output is correct
23 Correct 7 ms 2816 KB Output is correct
24 Correct 7 ms 2816 KB Output is correct
25 Correct 7 ms 2816 KB Output is correct
26 Correct 6 ms 2816 KB Output is correct
27 Correct 6 ms 2816 KB Output is correct
28 Correct 7 ms 2944 KB Output is correct
29 Correct 6 ms 2816 KB Output is correct
30 Correct 9 ms 2944 KB Output is correct
31 Correct 7 ms 2944 KB Output is correct
32 Correct 6 ms 2816 KB Output is correct
33 Correct 6 ms 2816 KB Output is correct
34 Correct 6 ms 2816 KB Output is correct
35 Correct 6 ms 2816 KB Output is correct
36 Correct 6 ms 2816 KB Output is correct
37 Correct 6 ms 2816 KB Output is correct
38 Correct 6 ms 2816 KB Output is correct
39 Correct 6 ms 2816 KB Output is correct
40 Correct 7 ms 2816 KB Output is correct
41 Correct 7 ms 2816 KB Output is correct
42 Correct 6 ms 2816 KB Output is correct
43 Correct 7 ms 2816 KB Output is correct
44 Correct 7 ms 2816 KB Output is correct
45 Correct 8 ms 2944 KB Output is correct
46 Correct 16 ms 3456 KB Output is correct
47 Correct 16 ms 3328 KB Output is correct
48 Correct 16 ms 3328 KB Output is correct
49 Correct 11 ms 3584 KB Output is correct
50 Correct 11 ms 3584 KB Output is correct
51 Correct 11 ms 3584 KB Output is correct
52 Correct 11 ms 3456 KB Output is correct
53 Correct 14 ms 3668 KB Output is correct
54 Correct 11 ms 3456 KB Output is correct
55 Correct 11 ms 3456 KB Output is correct
56 Correct 12 ms 3584 KB Output is correct
57 Correct 23 ms 3328 KB Output is correct
58 Correct 24 ms 3328 KB Output is correct
59 Correct 23 ms 3320 KB Output is correct
60 Correct 23 ms 3328 KB Output is correct
61 Correct 12 ms 3456 KB Output is correct
62 Correct 12 ms 3456 KB Output is correct
63 Correct 13 ms 3668 KB Output is correct
64 Correct 14 ms 3328 KB Output is correct
65 Correct 15 ms 3376 KB Output is correct
66 Correct 16 ms 3328 KB Output is correct
67 Correct 16 ms 3328 KB Output is correct
68 Correct 10 ms 3584 KB Output is correct
69 Correct 12 ms 3456 KB Output is correct
70 Correct 11 ms 3456 KB Output is correct
71 Correct 11 ms 3456 KB Output is correct
72 Correct 23 ms 3328 KB Output is correct
73 Correct 23 ms 3328 KB Output is correct
74 Correct 12 ms 3456 KB Output is correct
75 Correct 12 ms 3456 KB Output is correct
76 Correct 12 ms 3456 KB Output is correct
77 Correct 11 ms 3328 KB Output is correct
78 Correct 11 ms 3328 KB Output is correct
79 Correct 11 ms 3328 KB Output is correct
80 Correct 11 ms 3328 KB Output is correct
81 Correct 12 ms 3456 KB Output is correct
82 Correct 14 ms 3328 KB Output is correct
83 Correct 12 ms 3328 KB Output is correct
84 Correct 12 ms 3456 KB Output is correct
85 Correct 12 ms 3328 KB Output is correct
86 Correct 12 ms 3456 KB Output is correct
87 Correct 33 ms 4344 KB Output is correct
88 Correct 102 ms 7416 KB Output is correct
89 Correct 416 ms 18288 KB Output is correct
90 Correct 431 ms 18160 KB Output is correct
91 Correct 416 ms 18160 KB Output is correct
92 Correct 163 ms 24176 KB Output is correct
93 Correct 173 ms 24176 KB Output is correct
94 Correct 163 ms 24176 KB Output is correct
95 Correct 184 ms 20720 KB Output is correct
96 Correct 216 ms 21228 KB Output is correct
97 Correct 192 ms 21104 KB Output is correct
98 Correct 197 ms 21104 KB Output is correct
99 Correct 201 ms 20720 KB Output is correct
100 Correct 822 ms 18416 KB Output is correct
101 Correct 826 ms 18672 KB Output is correct
102 Correct 822 ms 18544 KB Output is correct
103 Correct 807 ms 18544 KB Output is correct
104 Correct 239 ms 20464 KB Output is correct
105 Correct 228 ms 20464 KB Output is correct
106 Correct 253 ms 20592 KB Output is correct
107 Correct 398 ms 17008 KB Output is correct
108 Correct 416 ms 17680 KB Output is correct
109 Correct 427 ms 17644 KB Output is correct
110 Correct 159 ms 23660 KB Output is correct
111 Correct 188 ms 20716 KB Output is correct
112 Correct 183 ms 20464 KB Output is correct
113 Correct 180 ms 19824 KB Output is correct
114 Correct 792 ms 18288 KB Output is correct
115 Correct 806 ms 18140 KB Output is correct
116 Correct 229 ms 19952 KB Output is correct
117 Correct 194 ms 18924 KB Output is correct
118 Correct 180 ms 18548 KB Output is correct
119 Correct 183 ms 18552 KB Output is correct
120 Correct 174 ms 18540 KB Output is correct
121 Correct 176 ms 18288 KB Output is correct
122 Correct 186 ms 17992 KB Output is correct
123 Correct 240 ms 19056 KB Output is correct
124 Correct 244 ms 18672 KB Output is correct
125 Correct 254 ms 18640 KB Output is correct
126 Correct 226 ms 18672 KB Output is correct
127 Correct 231 ms 18284 KB Output is correct
128 Correct 234 ms 18156 KB Output is correct