oj.uz

Submission #287873

# Submission time Handle Problem Language Result Execution time Memory
287873 2020-09-01T05:43:12 Z Bill_00 Traffic (IOI10_traffic) C++14
0 / 100
 63 ms 63864 KB 
#include <traffic.h>
#include <bits/stdc++.h>
using namespace std;
vector<long long>adj[1000001];
vector<long long>leaf;
long long p[1000001];
long long sum[1000001];
long long dp[1000001],vis[1000001];
int b[1000001];
void dfs(int j){
	if(adj[j].size()==1 && p[j]==adj[j][0]){
		leaf.push_back(j);
		return;
	}
	for(int i=0;i<adj[j].size();i++){
		if(adj[j][i]!=p[j]){
			p[adj[j][i]]=j;
			dfs(adj[j][i]);
		}
	}
}
long long calc(int j){
	sum[j]=(long long)b[j];
	for(int i=0;i<adj[j].size();i++){
		if(adj[j][i]!=p[j]){
			sum[j]+=calc(adj[j][i]);
		}
	}
	return sum[j];
}
void check(int j){
	for(int i=0;i<adj[j].size();i++){
		if(vis[adj[j][i]]==0 && adj[j][i]!=p[j]){
			dp[adj[j][i]]=dp[j]-(2*sum[adj[j][i]])+sum[0];
			vis[adj[j][i]]=1;
			check(adj[j][i]);
		}
	}
	if(j!=0){
		dp[p[j]]=dp[j]+2*sum[j]-sum[0];
		check(p[j]);
	}
}
int LocateCentre(int n,int a[],int s[],int d[]){
	for(int i=0;i<n;i++){
		b[i]=a[i];
	}
	memset(vis,0,sizeof(vis));
	for(int i=0;i<n-1;i++){
		adj[s[i]].push_back(d[i]);
		adj[d[i]].push_back(s[i]);
	}
	p[0]=-1;
	dfs(0);
	calc(0);
	dp[leaf[0]]=0;
	vis[leaf[0]]=1;
	long long ans=2e9,id;
	check(leaf[0]);
	for(int i=0;i<n;i++){
		//cout << dp[i] << endl;
		if(dp[i]<ans){
			id=i;
			ans=dp[i];
		}	
	}
	return id;
}

Compilation message

traffic.cpp: In function 'void dfs(int)':
traffic.cpp:15:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int i=0;i<adj[j].size();i++){
      |              ~^~~~~~~~~~~~~~
traffic.cpp: In function 'long long int calc(int)':
traffic.cpp:24:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for(int i=0;i<adj[j].size();i++){
      |              ~^~~~~~~~~~~~~~
traffic.cpp: In function 'void check(int)':
traffic.cpp:32:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |  for(int i=0;i<adj[j].size();i++){
      |              ~^~~~~~~~~~~~~~
traffic.cpp: In function 'int LocateCentre(int, int*, int*, int*)':
traffic.cpp:67:9: warning: 'id' may be used uninitialized in this function [-Wmaybe-uninitialized]
   67 |  return id;
      |         ^~

Subtask #1
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31744 KB Output is correct
3 Correct 19 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 19 ms 31616 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 20 ms 31616 KB Output is correct
9 Correct 19 ms 31744 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 19 ms 31608 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 21 ms 31736 KB Output is correct
14 Correct 19 ms 31616 KB Output is correct
15 Correct 19 ms 31616 KB Output is correct
16 Correct 20 ms 31744 KB Output is correct
17 Correct 20 ms 31616 KB Output is correct
18 Correct 19 ms 31616 KB Output is correct
19 Correct 20 ms 31616 KB Output is correct
20 Correct 20 ms 31616 KB Output is correct
21 Correct 20 ms 31616 KB Output is correct
22 Correct 20 ms 31616 KB Output is correct
23 Correct 21 ms 31616 KB Output is correct
24 Correct 21 ms 31744 KB Output is correct
25 Correct 20 ms 31872 KB Output is correct
26 Correct 20 ms 31744 KB Output is correct
27 Correct 20 ms 31744 KB Output is correct
28 Correct 20 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 21 ms 31744 KB Output is correct
31 Correct 20 ms 31744 KB Output is correct
32 Correct 21 ms 31744 KB Output is correct
33 Correct 21 ms 31736 KB Output is correct
34 Correct 21 ms 31616 KB Output is correct
35 Correct 21 ms 31744 KB Output is correct
36 Correct 21 ms 31992 KB Output is correct
37 Correct 21 ms 31744 KB Output is correct
38 Correct 22 ms 31872 KB Output is correct
39 Correct 21 ms 31744 KB Output is correct
40 Correct 22 ms 31744 KB Output is correct
41 Correct 22 ms 31860 KB Output is correct
42 Correct 22 ms 31744 KB Output is correct
43 Runtime error 63 ms 63864 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31744 KB Output is correct
3 Correct 19 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 19 ms 31616 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 20 ms 31616 KB Output is correct
9 Correct 19 ms 31744 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 19 ms 31608 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 21 ms 31736 KB Output is correct
14 Correct 19 ms 31616 KB Output is correct
15 Correct 19 ms 31616 KB Output is correct
16 Correct 20 ms 31744 KB Output is correct
17 Correct 20 ms 31616 KB Output is correct
18 Correct 19 ms 31616 KB Output is correct
19 Correct 20 ms 31616 KB Output is correct
20 Correct 20 ms 31616 KB Output is correct
21 Correct 20 ms 31616 KB Output is correct
22 Correct 20 ms 31616 KB Output is correct
23 Correct 21 ms 31616 KB Output is correct
24 Correct 21 ms 31744 KB Output is correct
25 Correct 20 ms 31872 KB Output is correct
26 Correct 20 ms 31744 KB Output is correct
27 Correct 20 ms 31744 KB Output is correct
28 Correct 20 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 21 ms 31744 KB Output is correct
31 Correct 20 ms 31744 KB Output is correct
32 Correct 21 ms 31744 KB Output is correct
33 Correct 21 ms 31736 KB Output is correct
34 Correct 21 ms 31616 KB Output is correct
35 Correct 21 ms 31744 KB Output is correct
36 Correct 21 ms 31992 KB Output is correct
37 Correct 21 ms 31744 KB Output is correct
38 Correct 22 ms 31872 KB Output is correct
39 Correct 21 ms 31744 KB Output is correct
40 Correct 22 ms 31744 KB Output is correct
41 Correct 22 ms 31860 KB Output is correct
42 Correct 22 ms 31744 KB Output is correct
43 Runtime error 63 ms 63864 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31744 KB Output is correct
3 Correct 19 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 19 ms 31616 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 20 ms 31616 KB Output is correct
9 Correct 19 ms 31744 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 19 ms 31608 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 21 ms 31736 KB Output is correct
14 Correct 19 ms 31616 KB Output is correct
15 Correct 19 ms 31616 KB Output is correct
16 Correct 20 ms 31744 KB Output is correct
17 Correct 20 ms 31616 KB Output is correct
18 Correct 19 ms 31616 KB Output is correct
19 Correct 20 ms 31616 KB Output is correct
20 Correct 20 ms 31616 KB Output is correct
21 Correct 20 ms 31616 KB Output is correct
22 Correct 20 ms 31616 KB Output is correct
23 Correct 21 ms 31616 KB Output is correct
24 Correct 21 ms 31744 KB Output is correct
25 Correct 20 ms 31872 KB Output is correct
26 Correct 20 ms 31744 KB Output is correct
27 Correct 20 ms 31744 KB Output is correct
28 Correct 20 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 21 ms 31744 KB Output is correct
31 Correct 20 ms 31744 KB Output is correct
32 Correct 21 ms 31744 KB Output is correct
33 Correct 21 ms 31736 KB Output is correct
34 Correct 21 ms 31616 KB Output is correct
35 Correct 21 ms 31744 KB Output is correct
36 Correct 21 ms 31992 KB Output is correct
37 Correct 21 ms 31744 KB Output is correct
38 Correct 22 ms 31872 KB Output is correct
39 Correct 21 ms 31744 KB Output is correct
40 Correct 22 ms 31744 KB Output is correct
41 Correct 22 ms 31860 KB Output is correct
42 Correct 22 ms 31744 KB Output is correct
43 Runtime error 63 ms 63864 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31744 KB Output is correct
3 Correct 19 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 19 ms 31616 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 20 ms 31616 KB Output is correct
9 Correct 19 ms 31744 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 19 ms 31608 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 21 ms 31736 KB Output is correct
14 Correct 19 ms 31616 KB Output is correct
15 Correct 19 ms 31616 KB Output is correct
16 Correct 20 ms 31744 KB Output is correct
17 Correct 20 ms 31616 KB Output is correct
18 Correct 19 ms 31616 KB Output is correct
19 Correct 20 ms 31616 KB Output is correct
20 Correct 20 ms 31616 KB Output is correct
21 Correct 20 ms 31616 KB Output is correct
22 Correct 20 ms 31616 KB Output is correct
23 Correct 21 ms 31616 KB Output is correct
24 Correct 21 ms 31744 KB Output is correct
25 Correct 20 ms 31872 KB Output is correct
26 Correct 20 ms 31744 KB Output is correct
27 Correct 20 ms 31744 KB Output is correct
28 Correct 20 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 21 ms 31744 KB Output is correct
31 Correct 20 ms 31744 KB Output is correct
32 Correct 21 ms 31744 KB Output is correct
33 Correct 21 ms 31736 KB Output is correct
34 Correct 21 ms 31616 KB Output is correct
35 Correct 21 ms 31744 KB Output is correct
36 Correct 21 ms 31992 KB Output is correct
37 Correct 21 ms 31744 KB Output is correct
38 Correct 22 ms 31872 KB Output is correct
39 Correct 21 ms 31744 KB Output is correct
40 Correct 22 ms 31744 KB Output is correct
41 Correct 22 ms 31860 KB Output is correct
42 Correct 22 ms 31744 KB Output is correct
43 Runtime error 63 ms 63864 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -