Submission #463933

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
463933	2021-08-12 04:21:39	bonopo	Railway (BOI17_railway)	C++14	100 / 100	111 ms	23824 KiB

railway

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define pb push_back
#define rc (i<<1)|1
#define lc (i<<1)
#define el "\n"
#define f first
#define s second
typedef long long ll;
const int MM=1e5+5, MOD=1e9+7, LOG=19;
int N, M, K, psa[MM], dep[MM], son[MM], top[MM], fa[MM], sz[MM], in[MM], ot[MM], cnt;
vector<pair<int,int>> adj[MM];
vector<int> vdj[MM], ans;
void df1(int u, int pa=0) {
    dep[u]=dep[pa]+1; fa[u]=pa; sz[u]=1; in[u]=++cnt;
    for(auto &e:adj[u]) if(e.f!=pa) {
        int v=e.f;
        df1(v, u); sz[u]+=sz[v];
        if(sz[v]>sz[son[u]]) son[u]=v; }
    ot[u]=++cnt;
}
void df2(int u, int pa=0) {
    if(son[u]) {
        top[son[u]]=top[u]; df2(son[u], u); }
    for(auto &e:adj[u]) if(e.f!=pa&&e.f!=son[u]) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

railway.cpp: In function 'int buildvrt(std::vector<int>&, int)':
railway.cpp:56:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     for(int i=1; i<vrt.size(); ++i) {
      |                  ~^~~~~~~~~~~
railway.cpp: In function 'int32_t main()':
railway.cpp:95:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |     for(int i=0; i<ans.size(); ++i) cout<<ans[i]<<" \n"[i==ans.size()-1];
      |                  ~^~~~~~~~~~~
railway.cpp:95:58: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |     for(int i=0; i<ans.size(); ++i) cout<<ans[i]<<" \n"[i==ans.size()-1];
      |                                                         ~^~~~~~~~~~~~~~

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