Submission #1018740

#	Time	Username	Problem	Language	Result	Execution time	Memory
1018740		AmirAli_H1	Towns (IOI15_towns)	C++17	25 / 100	16 ms	976 KiB

towns

// In the name of Allah

#include <bits/stdc++.h>
#include "towns.h"
using namespace std;

typedef		long long int			ll;
typedef		long double				ld;
typedef		pair<int, int>			pii;
typedef		pair<ll, ll>			pll;
typedef		complex<ld>				cld;

#define		all(x)					(x).begin(),(x).end()
#define		len(x)					((ll) (x).size())
#define		F						first
#define		S						second
#define		pb						push_back
#define		sep						' '
#define		endl					'\n'
#define		Mp						make_pair
#define		kill(x)					cout << x << '\n', exit(0)
#define		set_dec(x)				cout << fixed << setprecision(x);
#define		file_io(x,y)			freopen(x, "r", stdin); freopen(y, "w", stdout);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n;
const int maxn = 110 + 4;
ll D1[maxn], D2[maxn];

int hubDistance(int N, int sub) {
	n = N;
	
	ll mx = 0; int u1 = 0;
	for (int i = 0; i < n; i++) {
		if (i == 0) continue;
		ll d = getDistance(0, i);
		if (d >= mx) {
			mx = d; u1 = i;
		}
	}
	
	mx = 0; int u2 = u1;
	for (int i = 0; i < n; i++) {
		if (i == u1) {
			D1[i] = 0;
			continue;
		}
		D1[i] = getDistance(u1, i);
		if (D1[i] >= mx) {
			mx = D1[i]; u2 = i;
		}
	}
	
	for (int i = 0; i < n; i++) {
		if (i == u2) {
			D2[i] = 0;
			continue;
		}
		D2[i] = getDistance(u2, i);
	}
	
	ll dx = D1[u2], R = dx;
	for (int i = 0; i < n; i++) {
		ll x = (D1[i] + D2[i] - dx) / 2;
		R = min(R, max(D1[i] - x, D2[i] - x));
	}
	return R;
}

Compilation message (stderr)

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:67:9: warning: conversion from 'll' {aka 'long long int'} to 'int' may change value [-Wconversion]
   67 |  return R;
      |         ^
towns.cpp:30:28: warning: unused parameter 'sub' [-Wunused-parameter]
   30 | 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