oj.uz

Submission #72245

# Submission time Handle Problem Language Result Execution time Memory
72245 2018-08-26T06:19:24 Z nvmdava Dreaming (IOI13_dreaming) C++17
47 / 100
 255 ms 34040 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std;

struct Path{
	int to, cost;
	Path(int _to, int _cost){
		to = _to;
		cost = _cost;
	}
};

struct Node{
	int p[20], d;
};
map<int, int> c[100001];
vector<Path> path[100001];
bool in[100001];
Node a[100001];
int mxdist, mxid;
int lol = 0;
void build(int v, int p){
	in[v] = 1;
	for(auto x : path[v]){
		if(x.to == p) continue;
		a[x.to].d = a[v].d + 1;
		memset(a[x.to].p, -1, sizeof(a[x.to].p));
		a[x.to].p[0] = v;
		for(int i = 1; i < 20; i++){
			int t = a[x.to].p[i - 1];
			if(t == -1) break;
			a[x.to].p[i] = a[t].p[i - 1];
		}
		build(x.to, v);
	}
}

int goUp(int v, int u){
	for(int i = 0; i < 20; i++){
		if(u & (1 << i)) v = a[v].p[i];
	}
	return v;
}

int lca(int v, int u){
	int l = 0;
	int r = min(a[v].d, a[u].d) + 1;
	int m;
	while(l + 1 != r){
		m = (l + r) >> 1;
		if(goUp(v, a[v].d - m) == goUp(u, a[u].d - m)) l = m;
		else r = m;
	}
	return goUp(v, a[v].d - l);
}

void dfs(int v, int p, int d){
	if(path[v].size() == 1 && p != -1){
		if(d > mxdist){
			mxdist = d;
			mxid = v;
		}
	}
	for(auto x : path[v]){
		if(x.to == p) continue;
		dfs(x.to, v, d + x.cost);
	}
}

int go(int v){
	if(path[v].size() == 0) return 0;
	if(in[v]) return 0;
	memset(a[v].p, -1, sizeof(a[v].p));
	a[v].d = 0;
	build(v, -1);
	
	mxdist = 0;
	mxid = v;
	dfs(v, -1, 0);
	mxdist = 0;
	v = mxid;
	dfs(v, -1, 0);
	int u = mxid;
	int o = lca(v, u);
	lol = max(lol, mxdist);
	int s = (mxdist + 1) >> 1;
	int q = 0;
	while(v != o){
		q += c[v][a[v].p[0]];
		if(q >= s){
			return min(q, mxdist - q + c[v][a[v].p[0]]);
		}
		v = a[v].p[0];
	}
	q = 0;
	while(u != o){
		q += c[u][a[u].p[0]];
		if(q >= s){
//			cout<<min(q, mxdist - q + c[u][a[u].p[0]])<<"\n";
			return min(q, mxdist - q + c[u][a[u].p[0]]);
		}
		u = a[u].p[0];
	}
}

int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    
    for(int i = 0; i < M; i++){
    	path[A[i]].push_back(Path(B[i], T[i]));
    	path[B[i]].push_back(Path(A[i], T[i]));
    	c[A[i]][B[i]] = T[i];
    	c[B[i]][A[i]] = T[i];
	}
	int mx = 0;
	int mx2 = 0;
	int s;
	for(int i = 0; i < N; i++){
		s = go(i);
		if(s > mx){
			mx2 = mx;
			mx = s;
		} else if(s > mx2) mx2 = s;
	}
	return max(L + mx + mx2, lol);
}

Compilation message

dreaming.cpp: In function 'int go(int)':
dreaming.cpp:104:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 169 ms 31768 KB Output is correct
2 Correct 194 ms 31736 KB Output is correct
3 Correct 94 ms 23288 KB Output is correct
4 Correct 20 ms 11008 KB Output is correct
5 Correct 18 ms 9856 KB Output is correct
6 Correct 30 ms 12664 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 75 ms 17372 KB Output is correct
9 Correct 101 ms 20344 KB Output is correct
10 Correct 8 ms 7552 KB Output is correct
11 Correct 167 ms 25052 KB Output is correct
12 Correct 186 ms 28280 KB Output is correct
13 Correct 8 ms 7552 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 169 ms 31768 KB Output is correct
2 Correct 194 ms 31736 KB Output is correct
3 Correct 94 ms 23288 KB Output is correct
4 Correct 20 ms 11008 KB Output is correct
5 Correct 18 ms 9856 KB Output is correct
6 Correct 30 ms 12664 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 75 ms 17372 KB Output is correct
9 Correct 101 ms 20344 KB Output is correct
10 Correct 8 ms 7552 KB Output is correct
11 Correct 167 ms 25052 KB Output is correct
12 Correct 186 ms 28280 KB Output is correct
13 Correct 8 ms 7552 KB Output is correct
14 Correct 8 ms 7424 KB Output is correct
15 Correct 8 ms 7424 KB Output is correct
16 Correct 7 ms 7404 KB Output is correct
17 Correct 7 ms 7424 KB Output is correct
18 Correct 8 ms 7424 KB Output is correct
19 Correct 8 ms 7424 KB Output is correct
20 Correct 7 ms 7424 KB Output is correct
21 Correct 7 ms 7424 KB Output is correct
22 Correct 7 ms 7424 KB Output is correct
23 Correct 8 ms 7424 KB Output is correct
24 Correct 7 ms 7424 KB Output is correct
25 Correct 8 ms 7424 KB Output is correct
26 Correct 7 ms 7424 KB Output is correct
27 Correct 8 ms 7424 KB Output is correct
28 Correct 7 ms 7424 KB Output is correct
29 Correct 8 ms 7424 KB Output is correct
30 Correct 8 ms 7424 KB Output is correct
31 Correct 8 ms 7424 KB Output is correct
32 Correct 7 ms 7424 KB Output is correct
33 Correct 7 ms 7424 KB Output is correct
34 Correct 8 ms 7424 KB Output is correct
35 Correct 7 ms 7424 KB Output is correct
36 Correct 8 ms 7424 KB Output is correct
37 Correct 8 ms 7424 KB Output is correct
38 Correct 8 ms 7424 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 169 ms 31768 KB Output is correct
2 Correct 194 ms 31736 KB Output is correct
3 Correct 94 ms 23288 KB Output is correct
4 Correct 20 ms 11008 KB Output is correct
5 Correct 18 ms 9856 KB Output is correct
6 Correct 30 ms 12664 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 75 ms 17372 KB Output is correct
9 Correct 101 ms 20344 KB Output is correct
10 Correct 8 ms 7552 KB Output is correct
11 Correct 167 ms 25052 KB Output is correct
12 Correct 186 ms 28280 KB Output is correct
13 Correct 8 ms 7552 KB Output is correct
14 Correct 8 ms 7424 KB Output is correct
15 Correct 8 ms 7424 KB Output is correct
16 Correct 7 ms 7404 KB Output is correct
17 Correct 7 ms 7424 KB Output is correct
18 Correct 8 ms 7424 KB Output is correct
19 Correct 8 ms 7424 KB Output is correct
20 Correct 7 ms 7424 KB Output is correct
21 Correct 7 ms 7424 KB Output is correct
22 Correct 7 ms 7424 KB Output is correct
23 Correct 8 ms 7424 KB Output is correct
24 Correct 7 ms 7424 KB Output is correct
25 Correct 8 ms 7424 KB Output is correct
26 Correct 7 ms 7424 KB Output is correct
27 Correct 8 ms 7424 KB Output is correct
28 Correct 7 ms 7424 KB Output is correct
29 Correct 8 ms 7424 KB Output is correct
30 Correct 8 ms 7424 KB Output is correct
31 Correct 8 ms 7424 KB Output is correct
32 Correct 7 ms 7424 KB Output is correct
33 Correct 7 ms 7424 KB Output is correct
34 Correct 8 ms 7424 KB Output is correct
35 Correct 7 ms 7424 KB Output is correct
36 Correct 8 ms 7424 KB Output is correct
37 Correct 8 ms 7424 KB Output is correct
38 Correct 8 ms 7424 KB Output is correct
39 Correct 202 ms 31776 KB Output is correct
40 Correct 167 ms 31760 KB Output is correct
41 Correct 98 ms 23396 KB Output is correct
42 Correct 21 ms 10880 KB Output is correct
43 Correct 7 ms 7424 KB Output is correct
44 Correct 7 ms 7424 KB Output is correct
45 Correct 7 ms 7424 KB Output is correct
46 Correct 7 ms 7424 KB Output is correct
47 Correct 7 ms 7424 KB Output is correct
48 Correct 7 ms 7424 KB Output is correct
49 Correct 7 ms 7424 KB Output is correct
50 Correct 8 ms 7424 KB Output is correct
51 Correct 9 ms 7424 KB Output is correct
52 Correct 9 ms 7424 KB Output is correct
53 Correct 8 ms 7424 KB Output is correct
54 Correct 7 ms 7424 KB Output is correct
55 Correct 8 ms 7424 KB Output is correct
56 Correct 8 ms 7424 KB Output is correct
57 Correct 219 ms 30328 KB Output is correct
58 Correct 201 ms 30328 KB Output is correct
59 Correct 225 ms 30200 KB Output is correct
60 Correct 223 ms 30228 KB Output is correct
61 Correct 213 ms 30072 KB Output is correct
62 Correct 199 ms 30136 KB Output is correct
63 Correct 205 ms 30072 KB Output is correct
64 Correct 211 ms 30072 KB Output is correct
65 Correct 199 ms 29944 KB Output is correct
66 Correct 220 ms 30044 KB Output is correct
67 Correct 225 ms 30200 KB Output is correct
68 Correct 255 ms 30328 KB Output is correct
69 Correct 246 ms 30328 KB Output is correct
70 Correct 235 ms 30328 KB Output is correct
71 Correct 8 ms 7424 KB Output is correct
72 Correct 10 ms 8064 KB Output is correct
73 Correct 10 ms 8064 KB Output is correct
74 Correct 11 ms 8064 KB Output is correct
75 Correct 11 ms 8064 KB Output is correct
76 Correct 11 ms 8064 KB Output is correct
77 Correct 11 ms 8064 KB Output is correct
78 Correct 12 ms 8192 KB Output is correct
79 Correct 10 ms 8064 KB Output is correct
80 Correct 232 ms 30328 KB Output is correct
81 Correct 225 ms 30076 KB Output is correct
82 Correct 238 ms 30200 KB Output is correct
83 Correct 221 ms 30072 KB Output is correct
84 Correct 10 ms 7936 KB Output is correct
85 Correct 10 ms 7808 KB Output is correct
86 Correct 10 ms 7936 KB Output is correct
87 Correct 10 ms 7936 KB Output is correct
88 Correct 10 ms 8064 KB Output is correct
89 Correct 10 ms 8064 KB Output is correct
90 Correct 9 ms 8064 KB Output is correct
91 Correct 10 ms 8064 KB Output is correct
92 Correct 10 ms 8064 KB Output is correct
93 Correct 10 ms 8064 KB Output is correct
94 Correct 7 ms 7424 KB Output is correct
95 Correct 8 ms 7424 KB Output is correct
96 Correct 8 ms 7424 KB Output is correct
97 Correct 7 ms 7424 KB Output is correct
98 Correct 8 ms 7424 KB Output is correct
99 Correct 7 ms 7424 KB Output is correct
100 Correct 8 ms 7424 KB Output is correct
101 Correct 8 ms 7552 KB Output is correct
102 Correct 7 ms 7344 KB Output is correct
103 Correct 8 ms 7424 KB Output is correct
104 Correct 18 ms 9856 KB Output is correct
105 Correct 31 ms 12672 KB Output is correct
106 Correct 8 ms 7424 KB Output is correct
107 Correct 68 ms 17252 KB Output is correct
108 Correct 96 ms 20216 KB Output is correct
109 Correct 7 ms 7552 KB Output is correct
110 Correct 150 ms 25080 KB Output is correct
111 Correct 176 ms 28284 KB Output is correct
112 Correct 8 ms 7680 KB Output is correct
113 Correct 254 ms 34040 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 20472 KB Output is correct
2 Incorrect 69 ms 20524 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 169 ms 31768 KB Output is correct
2 Correct 194 ms 31736 KB Output is correct
3 Correct 94 ms 23288 KB Output is correct
4 Correct 20 ms 11008 KB Output is correct
5 Correct 18 ms 9856 KB Output is correct
6 Correct 30 ms 12664 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 75 ms 17372 KB Output is correct
9 Correct 101 ms 20344 KB Output is correct
10 Correct 8 ms 7552 KB Output is correct
11 Correct 167 ms 25052 KB Output is correct
12 Correct 186 ms 28280 KB Output is correct
13 Correct 8 ms 7552 KB Output is correct
14 Correct 8 ms 7552 KB Output is correct
15 Correct 9 ms 7808 KB Output is correct
16 Correct 10 ms 8064 KB Output is correct
17 Correct 9 ms 7652 KB Output is correct
18 Correct 9 ms 7808 KB Output is correct
19 Correct 9 ms 7936 KB Output is correct
20 Incorrect 8 ms 7552 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 169 ms 31768 KB Output is correct
2 Correct 194 ms 31736 KB Output is correct
3 Correct 94 ms 23288 KB Output is correct
4 Correct 20 ms 11008 KB Output is correct
5 Correct 18 ms 9856 KB Output is correct
6 Correct 30 ms 12664 KB Output is correct
7 Correct 8 ms 7424 KB Output is correct
8 Correct 75 ms 17372 KB Output is correct
9 Correct 101 ms 20344 KB Output is correct
10 Correct 8 ms 7552 KB Output is correct
11 Correct 167 ms 25052 KB Output is correct
12 Correct 186 ms 28280 KB Output is correct
13 Correct 8 ms 7552 KB Output is correct
14 Correct 8 ms 7424 KB Output is correct
15 Correct 8 ms 7424 KB Output is correct
16 Correct 7 ms 7404 KB Output is correct
17 Correct 7 ms 7424 KB Output is correct
18 Correct 8 ms 7424 KB Output is correct
19 Correct 8 ms 7424 KB Output is correct
20 Correct 7 ms 7424 KB Output is correct
21 Correct 7 ms 7424 KB Output is correct
22 Correct 7 ms 7424 KB Output is correct
23 Correct 8 ms 7424 KB Output is correct
24 Correct 7 ms 7424 KB Output is correct
25 Correct 8 ms 7424 KB Output is correct
26 Correct 7 ms 7424 KB Output is correct
27 Correct 8 ms 7424 KB Output is correct
28 Correct 7 ms 7424 KB Output is correct
29 Correct 8 ms 7424 KB Output is correct
30 Correct 8 ms 7424 KB Output is correct
31 Correct 8 ms 7424 KB Output is correct
32 Correct 7 ms 7424 KB Output is correct
33 Correct 7 ms 7424 KB Output is correct
34 Correct 8 ms 7424 KB Output is correct
35 Correct 7 ms 7424 KB Output is correct
36 Correct 8 ms 7424 KB Output is correct
37 Correct 8 ms 7424 KB Output is correct
38 Correct 8 ms 7424 KB Output is correct
39 Correct 202 ms 31776 KB Output is correct
40 Correct 167 ms 31760 KB Output is correct
41 Correct 98 ms 23396 KB Output is correct
42 Correct 21 ms 10880 KB Output is correct
43 Correct 7 ms 7424 KB Output is correct
44 Correct 7 ms 7424 KB Output is correct
45 Correct 7 ms 7424 KB Output is correct
46 Correct 7 ms 7424 KB Output is correct
47 Correct 7 ms 7424 KB Output is correct
48 Correct 7 ms 7424 KB Output is correct
49 Correct 7 ms 7424 KB Output is correct
50 Correct 8 ms 7424 KB Output is correct
51 Correct 9 ms 7424 KB Output is correct
52 Correct 9 ms 7424 KB Output is correct
53 Correct 8 ms 7424 KB Output is correct
54 Correct 7 ms 7424 KB Output is correct
55 Correct 8 ms 7424 KB Output is correct
56 Correct 8 ms 7424 KB Output is correct
57 Correct 219 ms 30328 KB Output is correct
58 Correct 201 ms 30328 KB Output is correct
59 Correct 225 ms 30200 KB Output is correct
60 Correct 223 ms 30228 KB Output is correct
61 Correct 213 ms 30072 KB Output is correct
62 Correct 199 ms 30136 KB Output is correct
63 Correct 205 ms 30072 KB Output is correct
64 Correct 211 ms 30072 KB Output is correct
65 Correct 199 ms 29944 KB Output is correct
66 Correct 220 ms 30044 KB Output is correct
67 Correct 225 ms 30200 KB Output is correct
68 Correct 255 ms 30328 KB Output is correct
69 Correct 246 ms 30328 KB Output is correct
70 Correct 235 ms 30328 KB Output is correct
71 Correct 8 ms 7424 KB Output is correct
72 Correct 10 ms 8064 KB Output is correct
73 Correct 10 ms 8064 KB Output is correct
74 Correct 11 ms 8064 KB Output is correct
75 Correct 11 ms 8064 KB Output is correct
76 Correct 11 ms 8064 KB Output is correct
77 Correct 11 ms 8064 KB Output is correct
78 Correct 12 ms 8192 KB Output is correct
79 Correct 10 ms 8064 KB Output is correct
80 Correct 232 ms 30328 KB Output is correct
81 Correct 225 ms 30076 KB Output is correct
82 Correct 238 ms 30200 KB Output is correct
83 Correct 221 ms 30072 KB Output is correct
84 Correct 10 ms 7936 KB Output is correct
85 Correct 10 ms 7808 KB Output is correct
86 Correct 10 ms 7936 KB Output is correct
87 Correct 10 ms 7936 KB Output is correct
88 Correct 10 ms 8064 KB Output is correct
89 Correct 10 ms 8064 KB Output is correct
90 Correct 9 ms 8064 KB Output is correct
91 Correct 10 ms 8064 KB Output is correct
92 Correct 10 ms 8064 KB Output is correct
93 Correct 10 ms 8064 KB Output is correct
94 Correct 7 ms 7424 KB Output is correct
95 Correct 8 ms 7424 KB Output is correct
96 Correct 8 ms 7424 KB Output is correct
97 Correct 7 ms 7424 KB Output is correct
98 Correct 8 ms 7424 KB Output is correct
99 Correct 7 ms 7424 KB Output is correct
100 Correct 8 ms 7424 KB Output is correct
101 Correct 8 ms 7552 KB Output is correct
102 Correct 7 ms 7344 KB Output is correct
103 Correct 8 ms 7424 KB Output is correct
104 Correct 18 ms 9856 KB Output is correct
105 Correct 31 ms 12672 KB Output is correct
106 Correct 8 ms 7424 KB Output is correct
107 Correct 68 ms 17252 KB Output is correct
108 Correct 96 ms 20216 KB Output is correct
109 Correct 7 ms 7552 KB Output is correct
110 Correct 150 ms 25080 KB Output is correct
111 Correct 176 ms 28284 KB Output is correct
112 Correct 8 ms 7680 KB Output is correct
113 Correct 254 ms 34040 KB Output is correct
114 Correct 71 ms 20472 KB Output is correct
115 Incorrect 69 ms 20524 KB Output isn't correct
116 Halted 0 ms 0 KB -