제출 #790241

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
790241		NothingXD	도시들 (IOI15_towns)	C++17	25 / 100	18 ms	356 KiB

towns

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

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef complex<ld> point;

void debug_out(){cerr << endl;}

template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cerr << H << " ";
	debug_out(T...);
}

#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

const int maxn = 200 + 10;

int n, dis[2][maxn];

int hubDistance(int N, int sub) {
	memset(dis, 0, sizeof dis);
	n = N;
	for (int i = 1; i < n; i++){
		dis[0][i] = getDistance(0, i);
	}
	int r1 = max_element(dis[0], dis[0] + n) - dis[0];
	dis[1][0] = dis[0][r1];
	for (int i = 1; i < n; i++){
		if (i == r1) continue;
		dis[1][i] = getDistance(r1, i);
	}
	int r2 = max_element(dis[1], dis[1] + n) - dis[1];
	int lca = (dis[0][r1] + dis[0][r2] - dis[1][r2]) / 2;
	int ans = dis[1][r2];
	vector<int> cent = {dis[0][r1]};
	for (int i = 0; i < n; i++){
		int tmp = (dis[0][i] + dis[0][r1] - dis[1][i]) / 2;
		if (tmp < lca) continue;
		int res = max(dis[0][r1] - tmp, dis[1][r2] - dis[0][r1] + tmp);
		if (res < ans){
			cent.clear();
			cent.push_back(res);
			ans = res;
		}
		if (res == ans){
			cent.push_back(res);
		}
	}
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:37:43: warning: conversion from 'long int' to 'int' may change value [-Wconversion]
   37 |  int r1 = max_element(dis[0], dis[0] + n) - dis[0];
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
towns.cpp:43:43: warning: conversion from 'long int' to 'int' may change value [-Wconversion]
   43 |  int r2 = max_element(dis[1], dis[1] + n) - dis[1];
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
towns.cpp:31:28: warning: unused parameter 'sub' [-Wunused-parameter]
   31 | 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