Submission #778412

#	Time	Username	Problem	Language	Result	Execution time	Memory
778412		danikoynov	Towns (IOI15_towns)	C++14	25 / 100	16 ms	900 KiB

towns

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

using namespace std;
const int maxn = 120;
int dist[maxn];
int hubDistance(int N, int sub)
{
    int v = 0, u = -1, best = 0;
    for (int i = 1; i < N; i ++)
    {
        int d = getDistance(i, 0);
        if (u == -1 || d > best)
        {
            best = d;
            u = i;
        }
    }
    dist[0] = best;
    for (int i = 1; i < N; i ++)
    {
        if (i != u)
        {
            int d = getDistance(i, u);
            dist[i] = d;
            if (d > best)
            {
                best = d;
                v = i;
            }
        }
    }

    int ans = 1e9;
    for (int i = 0; i < N; i ++)
    {
        if (i == v || i == u)
            continue;
        int df = getDistance(v, i), tf = dist[i];
        int diff = abs(df - tf);
        ans = min(ans, (best - diff) / 2 + diff);
    }

    return ans;
}

Compilation message (stderr)

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:7:28: warning: unused parameter 'sub' [-Wunused-parameter]
    7 | 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