Submission #58300

#	Time	Username	Problem	Language	Result	Execution time	Memory
58300		E869120	Towns (IOI15_towns)	C++14	35 / 100	23 ms	688 KiB

towns

#include "towns.h"
#include <iostream>
#include <cmath>
#include <vector>
#include <algorithm>
using namespace std;

int Weight[111][111], Dist[111][111], NN, TT, SB, cu[111], cv[111];

//int getDistance(int p1, int p2) { return Weight[p1][p2]; }

int getDist(int p1, int p2) {
	if (p1 > p2) swap(p1, p2);
	if (Dist[p1][p2] == 0) {
		Dist[p1][p2] = getDistance(p1, p2) + 1;
	}
	return Dist[p1][p2] - 1;
}

int hubDistance(int N, int sub) {
	for (int i = 0; i < N; i++) { for (int j = 0; j < N; j++) Dist[i][j] = 0; }

	int maxn1 = 0, u = 0;
	for (int i = 0; i < N; i++) { int V = getDist(0, i); if (V > maxn1) { maxn1 = V; u = i; } }
	int maxn2 = 0, v = 0;
	for (int i = 0; i < N; i++) { int V = getDist(u, i); if (V > maxn2) { maxn2 = V; v = i; } cu[i] = V; }

	for (int i = 0; i < N; i++) cv[i] = getDist(v, i);

	int ret = (1 << 30), maxid = 0;
	for (int i = 0; i < N; i++) { if (abs(cu[i] - cv[i]) < ret) { ret = abs(cu[i] - cv[i]); maxid = i; } }

	int p[3] = { 0,0,0 }, R = cu[maxid] - cv[maxid], S = (maxn2 + ret) / 2; vector<int>vec;
	for (int i = 0; i < N; i++) {
		if (cu[i] - cv[i] < R) p[0]++;
		if (cu[i] - cv[i] == R) { p[1]++; vec.push_back(i); }
		if (cu[i] - cv[i] > R) p[2]++;
	}
	if (sub == 1 || sub == 2 || sub == 4) {
		if (p[0] > (N / 2) || p[1] > (N / 2) || p[2] > (N / 2)) return -S;
		return S;
	}
	if (sub == 3) {
		if (p[0] > (N / 2) || p[2] > (N / 2)) return -S;
		if (p[1] <= (N / 2)) return -S;

	}
	return 0;
}

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