제출 #964509

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
964509		GrindMachine	도시들 (IOI15_towns)	C++17	25 / 100	19 ms	1032 KiB

towns

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 110 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

#include "towns.h"

int dis[N][N];

int f(int u, int v){
	if(u > v) swap(u,v);
	if(dis[u][v] != -1) return dis[u][v];
	return dis[u][v] = getDistance(u,v);
}

int hubDistance(int n, int sub) {
	memset(dis,-1,sizeof dis);

	pii mx = {-1,-1};
	rep1(i,n-1){
		pii px = {f(0,i),i};
		amax(mx,px);
	}

	int s = mx.ss;
	mx = {-1,-1};

	rep(i,n){
		if(i == s) conts;
		pii px = {f(s,i),i};
		amax(mx,px);
	}

	auto [diam,t] = mx;
	int ans = inf1;

	rep(i,n){
		if(i == s or i == t) conts;
		int d1 = f(s,i), d2 = f(t,i);
		int d = d1+d2;
		assert(d >= diam);
		int x = (d-diam)/2;
		d1 -= x, d2 -= x;
		amin(ans,max(d1,d2));
	}

	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:70:28: warning: unused parameter 'sub' [-Wunused-parameter]
   70 | 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