Submission #567795

#	Time	Username	Problem	Language	Result	Execution time	Memory
567795		hhhhaura	Fun Tour (APIO20_fun)	C++14	26 / 100	119 ms	17256 KiB

fun

#include "fun.h"
#define wiwihorz
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("sse")
#pragma loop-opt(on)
#define rep(i, a, b) for(int i = a; i <= b; i ++)
#define rrep(i, a, b) for(int i = b; i >= a; i --)
#define all(x) x.begin(), x.end()
#define ceil(a, b) ((a + b - 1) / (b))
#define ll long long int
#define lld long double
#define pii pair<int, int>
#define random mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count())
#define INF 2000000000
#define MOD 1000000007
#define eps (1e-9)
using namespace std;
#ifdef wiwihorz
#define print(a...)cerr<<"Line "<<__LINE__<<":",kout("["+string(#a)+"] = ", a)
void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L) == R], ++L; }
void kout() { cerr << endl; }
template<class T1,class ... T2>void kout(T1 a,T2 ... e){cerr<<a<<" ",kout(e...);}
#else
#define print(...) 0
#define vprint(...) 0
#endif
int n;
vector<int> vis;
vector<vector<int>> mp;
int find_farthest(int x) {
	vector<int> dis(n, INF);
	queue<int> q;
	q.push(x);
	dis[x] = 0;
	while(q.size()) {
		int cur = q.front();
		q.pop();
		for(auto i : mp[cur]) {
			if(dis[i] != INF) continue;
			dis[i] = dis[cur] + 1;
			q.push(i);
		}
	}
	int best = 0, id = -1;
	rep(i, 0, n - 1) if(!vis[i]) {
		if(dis[i] > best) {
			best = dis[i];
			id = i;
		}
	}
	return id;
}
vector<int> createFunTour(int N, int Q) {
	n = N;
	vector<int> ans;
	mp.assign(N, vector<int>());
	vis.assign(N, 0);
	rep(i, 0, N - 1) rep(j, 0, i - 1) {
		if(hoursRequired(i, j) == 1) {
			mp[i].push_back(j);
			mp[j].push_back(i);
		}
	}
	int st = find_farthest(0);
	st = find_farthest(st);
	vis[st] = 1;
	ans.push_back(st);
	rep(i, 1, N - 1) {
		st = find_farthest(st);
		vis[st] = 1;
		ans.push_back(st);
	} 
	return ans;
}

Compilation message (stderr)

fun.cpp:6: warning: ignoring '#pragma loop ' [-Wunknown-pragmas]
    6 | #pragma loop-opt(on)
      | 
fun.cpp:21:13: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   21 | void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L) == R], ++L; }
      |             ^~~~
fun.cpp:21:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   21 | void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L) == R], ++L; }
      |                    ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 16 / 16
• Subtask 3: 0 / 21
• Subtask 4: 0 / 19
• Subtask 5: 0 / 34