oj.uz

답안 #765323

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
765323 2023-06-24T10:46:47 Z raysh07 악어의 지하 도시 (IOI11_crocodile) C++17
100 / 100
 426 ms 72864 KB 
#include "crocodile.h"
#include <bits/stdc++.h>
using namespace std;
#define INF (long long)(1e18 + 1)
#define int long long

int n, m;
const int maxn = 1e5 + 69;
vector <pair<int, int>> adj[maxn];
int dp[maxn][2];

int32_t travel_plan(int32_t N, int32_t M, int32_t R[][2], int32_t L[], int32_t K, int32_t P[])
{
	n = N, m = M;
	for (int i = 0; i < n; i++){
		dp[i][0] = dp[i][1] = INF;
	}

	for (int i = 0; i < m; i++){
		adj[R[i][0]].push_back({R[i][1], L[i]});
		adj[R[i][1]].push_back({R[i][0], L[i]});
	}

	for (int i = 0; i < K; i++){
		dp[P[i]][0] = dp[P[i]][1] = 0;
	}

	//dp[i][0] = best path, dp[i][1] = second best path, update only with help of second best path values 
	priority_queue <pair<int, int>> pq;
	for (int i = 0; i < n; i++){
		if (dp[i][1] != INF)
		pq.push({-dp[i][1], i});
	}

	while (!pq.empty()){
		auto pi = pq.top();
		pq.pop();

		int d = -pi.first;
		int u = pi.second;

		if (d != dp[u][1]) continue;

		for (pair <int, int> pi : adj[u]){
			int v = pi.first;
			int w = pi.second;
			int val = d + w;

			if (val < dp[v][0]){
				int temp = dp[v][1];
				dp[v][1] = dp[v][0];
				dp[v][0] = val;
				if (dp[v][1] != temp)
				pq.push({-dp[v][1], v});
			} else if (val < dp[v][1]) {
				dp[v][1] = val;
				pq.push({-dp[v][1], v});
			}
		}
	}

	return dp[0][1];
}

Subtask #1
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct

Subtask #2
43.0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 3028 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2752 KB Output is correct
12 Correct 4 ms 3284 KB Output is correct
13 Correct 5 ms 3284 KB Output is correct
14 Correct 1 ms 2644 KB Output is correct
15 Correct 2 ms 2772 KB Output is correct

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2772 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2772 KB Output is correct
8 Correct 2 ms 2772 KB Output is correct
9 Correct 3 ms 3028 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2752 KB Output is correct
12 Correct 4 ms 3284 KB Output is correct
13 Correct 5 ms 3284 KB Output is correct
14 Correct 1 ms 2644 KB Output is correct
15 Correct 2 ms 2772 KB Output is correct
16 Correct 329 ms 66728 KB Output is correct
17 Correct 54 ms 14276 KB Output is correct
18 Correct 96 ms 16668 KB Output is correct
19 Correct 426 ms 72864 KB Output is correct
20 Correct 237 ms 55020 KB Output is correct
21 Correct 28 ms 8228 KB Output is correct
22 Correct 241 ms 49920 KB Output is correct