oj.uz

답안 #140345

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
140345 2019-08-02T15:06:37 Z nhc7502 날다람쥐 (JOI14_ho_t4) C++14
25 / 100
 954 ms 8836 KB 
///EVERYONE BELIEVE IN GODTAEGYU
#include<bits/stdc++.h>
using namespace std;
const long long MOD = 1e9 + 7;
int n, m, i, j, k;
int x, h[100141];
vector<pair<int,int>>graph[100141];
unordered_map<long long, int>dist;
priority_queue<pair<int,pair<int,int>>>pq;

inline pair<int,int> lltop(long long x)
{
	return {x/MOD, x%MOD};
}

inline long long ptoll(pair<int,int> x)
{
	return x.first * MOD + x.second;
}

void f(int tree, int godo, int thist)
{
	if(dist.find(ptoll({tree, godo})) == dist.end())
	{
		dist[ptoll({tree, godo})] = thist;
		pq.push({thist, {tree, godo}});
	}
	else if(dist[ptoll({tree, godo})] > thist)
	{
		dist[ptoll({tree, godo})] = thist;
		pq.push({thist, {tree, godo}});
	}
}

int main(){
	iostream::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	for(cin>>n>>m>>x; i<n;)
	{
		cin>>h[++i];
	}
	for(;m--;)
	{
		cin>>i>>j>>k;
		if(h[i] >= k)
			graph[i].push_back({j, k});
		if(h[j] >= k)
			graph[j].push_back({i, k});
	}
	dist[ptoll({1, x})] = 0;
	pq.push({0,{1,x}});
	while(!pq.empty())
	{
		x = pq.top().first;
		tie(m, i) = pq.top().second;
		pq.pop();
		if(dist[ptoll({m, i})] != x)
			continue;
		for(auto next : graph[m])
		{	//m = 현재 나무, i = 현재 높이, j = 다음 나무, k = 다음 나무 거리
			tie(j, k) = next;
			if(i < k){
				if(h[m] >= k)
					f(j, 0, x + k - i + k);
			}
			else if(i - k > h[j]) f(j, h[j], x + i - h[j]);
			else f(j, i - k, x + k);
		}
		if(m == n)
			f(n, h[n], x + h[n] - i);
	}
	if(dist.find(ptoll({n, h[n]})) == dist.end())
		cout<<-1;
	else cout<<dist[ptoll({n,h[n]})];
	return 0;
}

Subtask #1
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 50 ms 2808 KB Output is correct
3 Correct 43 ms 2936 KB Output is correct
4 Correct 9 ms 2808 KB Output is correct
5 Correct 20 ms 2808 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 5 ms 2808 KB Output is correct
8 Correct 51 ms 2808 KB Output is correct
9 Correct 28 ms 2808 KB Output is correct
10 Correct 38 ms 2908 KB Output is correct
11 Correct 3 ms 2680 KB Output is correct
12 Correct 56 ms 2808 KB Output is correct
13 Correct 51 ms 2808 KB Output is correct
14 Correct 13 ms 2680 KB Output is correct
15 Correct 52 ms 2808 KB Output is correct
16 Correct 5 ms 2680 KB Output is correct
17 Correct 4 ms 2680 KB Output is correct
18 Correct 5 ms 2680 KB Output is correct
19 Correct 5 ms 2808 KB Output is correct
20 Correct 5 ms 2812 KB Output is correct

Subtask #2
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 954 ms 8836 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 50 ms 2808 KB Output is correct
3 Correct 43 ms 2936 KB Output is correct
4 Correct 9 ms 2808 KB Output is correct
5 Correct 20 ms 2808 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 5 ms 2808 KB Output is correct
8 Correct 51 ms 2808 KB Output is correct
9 Correct 28 ms 2808 KB Output is correct
10 Correct 38 ms 2908 KB Output is correct
11 Correct 3 ms 2680 KB Output is correct
12 Correct 56 ms 2808 KB Output is correct
13 Correct 51 ms 2808 KB Output is correct
14 Correct 13 ms 2680 KB Output is correct
15 Correct 52 ms 2808 KB Output is correct
16 Correct 5 ms 2680 KB Output is correct
17 Correct 4 ms 2680 KB Output is correct
18 Correct 5 ms 2680 KB Output is correct
19 Correct 5 ms 2808 KB Output is correct
20 Correct 5 ms 2812 KB Output is correct
21 Incorrect 954 ms 8836 KB Output isn't correct
22 Halted 0 ms 0 KB -