Submission #1082740

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082740		vjudge1	Towns (IOI15_towns)	C++17	25 / 100	12 ms	2136 KiB

towns

#include "towns.h"
#include <bits/stdc++.h>

using namespace std;

const int N = 500;

int memo[N][N];

int dist(int u,int v){
	if(u == v)return 0;
	if(u > v)swap(u, v);
	if(memo[u][v] != -1)return memo[u][v];
	return memo[u][v] = getDistance(u, v);
}

int hubDistance(int n, int sub) {
	memset(memo, -1, sizeof memo);
	int u = 0;
	for(int i = 1;i < n;i++){
		if(dist(i, 0) > dist(u, 0))u = i;
	}
	int v = 0;
	for(int i = 1;i < n;i++){
		if(dist(i, u) > dist(v, u))v = i;
	}
	int ans = 1e9;;
	for(int i = 0;i  <n;i++){
		int d = ( dist(i, u) + dist(i, v) - dist(u, v)) / 2;
		ans = min(ans, max(dist(i, u) - d, dist(i, v) - d));
	}
	return ans;
}

Compilation message (stderr)

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:17:28: warning: unused parameter 'sub' [-Wunused-parameter]
   17 | int hubDistance(int n, int sub) {
      |                        ~~~~^~~

• Subtask 1: 13 / 13
• Subtask 2: 12 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 13
• Subtask 6: 0 / 39