제출 #922346

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
922346		dozer	사이버랜드 (APIO23_cyberland)	C++17	44 / 100	3040 ms	527808 KiB

cyberland

#include "cyberland.h"
#include <bits/stdc++.h>
using namespace std;
#define sp " "
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define fileio() freopen("curling.in", "r", stdin), freopen("curling.out", "w", stdout)

const long double INF = 2e18 + 7;


double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) {
	int lim = min(K, 100);
	vector<vector<long double>> dist(lim + 5, vector<long double>(N, INF));
	vector<pii> adj[N + 5];
	for (int i = 0; i < M; i++){
		adj[x[i]].pb({y[i], c[i]});
		adj[y[i]].pb({x[i], c[i]});
	}
	vector<int> mark(N + 5, 0);
	queue<int> q;
	q.push(0);
	mark[0] = 1;
	while(!q.empty()){
		int top = q.front();
		q.pop();
		for (auto i : adj[top]){
			if (mark[i.st] == 0){
				mark[i.st] = 1;
				if (i.st != H) q.push(i.st);
			}
		}
	}

	long double mini = INF;
	dist[0][0] = 0;
	for (int j = 0; j < N; j++){
		if (mark[j] && arr[j] == 0) dist[0][j] = 0;
	}

	for (int i = 0; i < lim; i++){
		priority_queue<pair<long double, int>> q;
		for (int j = 0; j < N; j++){
			if (mark[j] && j != H) q.push({-dist[i][j], j});
		}
		
		while(!q.empty()){
			int top = q.top().nd;
			q.pop();
			int curr = i;
			for (auto j : adj[top]){
				int v = j.st, w = j.nd;
				long double upd = dist[i][top] + (long double)w / (1LL<<i);
				if (dist[i][v] > upd){
					dist[i][v] = upd;
					if (v != H) q.push({-upd, v});
				}
			}
			if (arr[top] == 2 && i < lim - 1){
				for (auto j : adj[top]){
					int v = j.st, w = j.nd;
					long double upd = dist[i][top] + (long double)w / (1LL<<(i + 1));
					if (dist[i + 1][v] > upd){
						dist[i + 1][v] = upd;
					}
				}	
			}
		}
		mini = min(mini, dist[i][H]);
	}
	if (mini > 1e18) return -1;
	return mini;
}

컴파일 시 표준 에러 (stderr) 메시지

cyberland.cpp: In function 'double solve(int, int, int, int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:52:8: warning: unused variable 'curr' [-Wunused-variable]
   52 |    int curr = i;
      |        ^~~~

• Subtask 1: 0 / 5
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 0 / 19
• Subtask 5: 7 / 7
• Subtask 6: 16 / 16
• Subtask 7: 0 / 29
• Subtask 8: 0 / 3