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Submission #465267

# Submission time Handle Problem Language Result Execution time Memory
465267 2021-08-15T12:43:20 Z MohamedFaresNebili Crocodile's Underground City (IOI11_crocodile) C++14
0 / 100
 2 ms 2636 KB 
#include <bits/stdc++.h>
#include "crocodile.h"

using namespace std;

int n, m, k; vector<pair<int, long long>>adj[100000];
vector<int>ex; vector<bool>e; long long memo[1024][1024];
long long dfs(int v, int p)
{
    if(e[v]) return 0;
	if(memo[v][p]!=-1) return memo[v][p];
    long long best=1e9, ans=1e9; int node=-1;
    for(auto u:adj[v]) {
        int to=u.first; long long w=u.second;
        if(to==p) continue;
		long long cnt=w+dfs(to, v);
        if(cnt<best) node=to, best=cnt;
    }
    for(auto u:adj[v]) {
        int to=u.first; long long w=u.second;
        if(to==p||to==node) continue;
        ans=min(ans, w+dfs(to, v));
    }
    return memo[v][p]=ans;
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    n=N, m=M, k=K; e.assign(n, false);
	for(int l=0;l<n;l++) {
		for(int i=0;i<n;i++)
			memo[l][i]=-1;
	}
    for(int l=0;l<m;l++) {
        int a=R[l][0], b=R[l][1]; long long w=L[l];
        adj[a].push_back({b, w}); adj[b].push_back({a, w});
    }
    for(int l=0;l<k;l++) {
        int i=P[l]; e[i]=true; ex.push_back(i);
    }
    N=dfs(0, -1);
    return N;
}

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:11:14: warning: array subscript -1 is below array bounds of 'long long int [1024]' [-Warray-bounds]
   11 |  if(memo[v][p]!=-1) return memo[v][p];
      |     ~~~~~~~~~^

Subtask #1
0 / 46.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 43.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2636 KB Output isn't correct
2 Halted 0 ms 0 KB -