Submission #553694

#	Time	Username	Problem	Language	Result	Execution time	Memory
553694		keta_tsimakuridze	Towns (IOI15_towns)	C++17	25 / 100	15 ms	492 KiB

towns

#include "towns.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 505;
ll d[2][N];
int hubDistance(int n, int sub) {
	int U = 0, V = 0;
	for(int i = 0; i < n; i++) {
		d[0][i] = getDistance(0, i); 
		if(d[0][i] >= d[0][U]) U = i;
	}
	for(int i = 0; i < n; i++) {
		d[1][i] = getDistance(U, i);
		
		if(d[1][i] >= d[1][V]) V = i;
	}
	vector<ll> v;
	ll Distance = 0;
	for(int i = 0; i < n; i++) {
		ll D = (d[1][i] + d[0][i] - d[0][U]) / 2;
		D = d[1][i] - D;
		v.push_back(D);
		if(i == V) Distance = D;
	}
	sort(v.begin(), v.end());
	v.erase(unique(v.begin(), v.end()), v.end());
	ll R = 1e18;
	for(int i = 0; i < v.size(); i++) {
		if(v[i] > Distance) break;
		ll x = (d[1][V] + d[0][V] - d[0][U]) / 2 + Distance - v[i];
		R = min(R, max(v[i], x));
	}
	return R;
}

Compilation message (stderr)

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(int i = 0; i < v.size(); i++) {
      |                 ~~^~~~~~~~~~
towns.cpp:34:9: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   34 |  return R;
      |         ^
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