oj.uz

Submission #222907

# Submission time Handle Problem Language Result Execution time Memory
222907 2020-04-14T10:38:20 Z MODDI Crocodile's Underground City (IOI11_crocodile) C++14
100 / 100
 754 ms 72352 KB 
#include "crocodile.h"
#include <bits/stdc++.h>
using namespace std;
int n, m, k;
vector<pair<int,int> > G[100010];
vector<int> exits;
int dijkstra()
{
	int vis[n];
	memset(vis,0,sizeof(vis));
	priority_queue<pair<int,int> > pq;
	for(int i=0;i<exits.size();i++)
	{
		int exit = exits[i];
		pq.push(make_pair(0,exit));
		vis[exit] = 1;
	}
	while(!pq.empty())
	{
		pair<int,int> state = pq.top(); pq.pop();
		int path = -state.first;
		int city = state.second;
		//cout<<"at city "<<city<<" with path "<<path<<endl;
		if(vis[city] == 0){
			vis[city] = 1;
			continue;
		}
		if(vis[city] == 2)
			continue;
			
		if(city == 0)
			return path;
			
		vis[city] = 2;
		vector<pair<int,int> > can_go = G[city];
		for(int i=0;i<can_go.size();i++)
		{
			int next = can_go[i].first;
			int len = can_go[i].second;
			len += path;
			pq.push(make_pair(-len,next));
		}
		
	}
}
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
	n = N;
	m = M;
	k = K;
	for(int i = 0; i < m; i++){
		int a, b, c;
		a = R[i][0], b = R[i][1], c = L[i];
		G[a].push_back(make_pair(b,c));
		G[b].push_back(make_pair(a,c));
	}
	for(int i = 0; i < k; i++){
		int exit = P[i];
		exits.push_back(exit);
	}
	return dijkstra();
}
/*int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	cin>>n>>m>>k;
	for(int i =0;i<m;i++)
	{
		int a, b, c;
		cin>>a>>b>>c;
		G[a].push_back(make_pair(b,c));
		G[b].push_back(make_pair(a,c));
	}
	for(int i =0;i<k;i++)
	{
		int exit;
		cin>>exit;
		exits.push_back(exit);
	}
	cout<<dijkstra()<<endl;
	return 0;
} */

Compilation message

crocodile.cpp: In function 'int dijkstra()':
crocodile.cpp:12:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<exits.size();i++)
              ~^~~~~~~~~~~~~
crocodile.cpp:36:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<can_go.size();i++)
               ~^~~~~~~~~~~~~~
crocodile.cpp:45:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Correct 6 ms 2688 KB Output is correct
3 Correct 7 ms 2688 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2688 KB Output is correct
6 Correct 7 ms 2732 KB Output is correct
7 Correct 7 ms 2816 KB Output is correct
8 Correct 7 ms 2816 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Correct 6 ms 2688 KB Output is correct
3 Correct 7 ms 2688 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2688 KB Output is correct
6 Correct 7 ms 2732 KB Output is correct
7 Correct 7 ms 2816 KB Output is correct
8 Correct 7 ms 2816 KB Output is correct
9 Correct 8 ms 3072 KB Output is correct
10 Correct 8 ms 2688 KB Output is correct
11 Correct 8 ms 2816 KB Output is correct
12 Correct 12 ms 3488 KB Output is correct
13 Correct 11 ms 3584 KB Output is correct
14 Correct 8 ms 2688 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Correct 6 ms 2688 KB Output is correct
3 Correct 7 ms 2688 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2688 KB Output is correct
6 Correct 7 ms 2732 KB Output is correct
7 Correct 7 ms 2816 KB Output is correct
8 Correct 7 ms 2816 KB Output is correct
9 Correct 8 ms 3072 KB Output is correct
10 Correct 8 ms 2688 KB Output is correct
11 Correct 8 ms 2816 KB Output is correct
12 Correct 12 ms 3488 KB Output is correct
13 Correct 11 ms 3584 KB Output is correct
14 Correct 8 ms 2688 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 732 ms 72352 KB Output is correct
17 Correct 123 ms 13304 KB Output is correct
18 Correct 135 ms 14840 KB Output is correct
19 Correct 754 ms 66912 KB Output is correct
20 Correct 436 ms 66104 KB Output is correct
21 Correct 64 ms 7544 KB Output is correct
22 Correct 682 ms 46460 KB Output is correct