Submission #219585

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
219585	2020-04-05 16:16:56	socho	Railway (BOI17_railway)	C++14	100 / 100	237 ms	46952 KiB

railway

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#include "bits/stdc++.h"
using namespace std;
// #define int long long
 
int n, m, k;
const int MXN = 300005;
vector<int> adj[MXN];
 
int st_start[MXN];
int st_end[MXN];
int at = 0;
 
int adder[MXN];
 
void dfs_tr(int node, int last) {
  st_start[node] = at;
  at++;
  for (int i=0; i<adj[node].size(); i++) {
    int x = adj[node][i];
    if (x == last) continue;
    dfs_tr(x, node);
  }
  st_end[node] = at;
  at++;
}
 
const int MXK = 20;
int depth[MXN];
int par[MXN][MXK];
 
 
 
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Compilation message (stderr)

railway.cpp: In function 'void dfs_tr(int, int)':
railway.cpp:18:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<adj[node].size(); i++) {
                ~^~~~~~~~~~~~~~~~~
railway.cpp: In function 'void dfs_dep(int, int, int)':
railway.cpp:39:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<adj[node].size(); i++) {
                ~^~~~~~~~~~~~~~~~~
railway.cpp: In function 'int dfs_rec(int, int)':
railway.cpp:84:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<adj[node].size(); i++) {
                ~^~~~~~~~~~~~~~~~~
railway.cpp: In function 'int main()':
railway.cpp:161:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<f.size(); i++) cout << f[i] << ' ';
                ~^~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25