Submission #680435

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
680435	2023-01-10 20:53:59	qwerasdfzxcl	Wells (CEOI21_wells)	C++17	0 / 100	65 ms	72556 KiB

wells

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#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
int dist[10010][10010], vcnt, n, k;
vector<int> adj[1501500], G[1501500], st;
vector<vector<int>> path;
void dfs(int s, int pa = -1){
    st.push_back(s);
    if ((int)st.size()==k) path.push_back(st);
    dist[st[0]][s] = (int)st.size() - 1;
    for (auto &v:adj[s]) if (v!=pa){
        dfs(v, s);
    }
    st.pop_back();
}
int col[1501500];
bool simulate(int s){
    vector<int> q = {s};
    fill(col+1, col+n+1, 0);
    col[s] = 1;
    while(!q.empty()){
        int v = q.back(); q.pop_back();
        for (int i=1;i<=n;i++) if (dist[v][i]==k && !col[i]){
            col[i] = 1;
 
 
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Compilation message (stderr)

wells.cpp: In function 'int main()':
wells.cpp:44:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |     scanf("%d %d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~
wells.cpp:47:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 30