oj.uz

Submission #615530

# Submission time Handle Problem Language Result Execution time Memory
615530 2022-07-31T10:19:35 Z Apiram Towns (IOI15_towns) C++14
25 / 100
 15 ms 852 KB 
#include "towns.h"
#include <bits/stdc++.h>
using namespace std;
int hubDistance(int N, int sub) {
	int root = 0;
	vector<int>dist(N);
	for (int i = 0;i<N;++i){
		if (i == root)dist[i] = 0;
		else dist[i] = getDistance(i,root);
	}
	for (int i = 0;i<N;++i){
		if (dist[i] > dist[root]){
			root = i;
		}
	}
	for (int i = 0;i<N;++i){
		if (i == root)dist[i] = 0;
		else dist[i] = getDistance(i,root);
	}
	int root2 = root;
	for (int i = 0;i<N;++i){
		if (dist[i] > dist[root2])root2 = i;
	}
	int answer = dist[root2];
	vector<int>dist2(N);
	for (int i = 0;i<N;++i){
		if (i == root2){
			dist2[i] = 0;
		}
		else{
			dist2[i] = getDistance(root2,i);
		}
	}
	for (int i = 0;i<N;++i){
		int x = (dist[i] + dist2[i] - dist[root2])/2;
		answer = min(answer,max(dist[i] - x,dist2[i] - x)); 
	}
	return answer;
}

Compilation message

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:4:28: warning: unused parameter 'sub' [-Wunused-parameter]
    4 | int hubDistance(int N, int sub) {
      |                        ~~~~^~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 340 KB Output is correct
2 Correct 15 ms 704 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 14 ms 824 KB Output is correct
5 Correct 12 ms 852 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 344 KB Output is correct
2 Correct 10 ms 724 KB Output is correct
3 Correct 13 ms 852 KB Output is correct
4 Correct 13 ms 840 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 352 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 39.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -