Submission #799893

#	Time	Username	Problem	Language	Result	Execution time	Memory
799893		Ronin13	도시들 (IOI15_towns)	C++17	25 / 100	29 ms	24552 KiB

towns

#include "towns.h"
#include <bits/stdc++.h>
#define ll long long 
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
#define ull unsigned ll
using namespace std;

const int nmax = 1000001;

vector <vector <int> > vec(nmax);

int hubDistance(int n, int sub) {
	int A;
	int d[n][2];
	d[0][0] = 0;
	A = 0;
	for(int i = 1; i < n; i++){
		d[i][0] = getDistance(0, i);
		if(d[i][0] > d[A][0]){
			A = i;
		}
	}
	int diam = 0;
	d[A][1] = 0;
	for(int i = 0; i < n; i++){
		if(A != i)
		d[i][1] = getDistance(A, i);
		diam = max(d[i][1], diam);
	}
	//cout << diam;
	int r = 1e9 + 1;
	for(int i = 0; i < n; i++){
		int a = d[i][1] + d[0][1] - d[i][0]; a >>= 1;
		if(a * 2 >= diam){
			//vec[a].pb(i);
		}
		
		r = min(r, max(diam - a, a));
	}
	return r;
	
}

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