Submission #197160

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
197160	2020-01-19 11:42:38	dndhk	Railway (BOI17_railway)	C++14	100 / 100	174 ms	24976 KiB

railway

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#include <bits/stdc++.h>
#define pb push_back
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const ll INF = 1000000000;
const int MAX_N = 100000;
const int MAX_K = 20;
int N, M, K;
vector<int> gp[MAX_N+1];
int lv[MAX_N+1], up[MAX_N+1][MAX_K+1], p[MAX_N+1];
int in[MAX_N+1], out[MAX_N+1], cnt;
int dp[MAX_N+1];
vector<pii> edge;
void dfs(int x){
  in[x] = ++cnt;
  up[x][0] = p[x];
  for(int i=1; i<MAX_K; i++){
    up[x][i] = up[up[x][i-1]][i-1];
  }
  for(int i : gp[x]){
    if(i==p[x]) continue;
    lv[i] = lv[x]+1;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

railway.cpp: In function 'int main()':
railway.cpp:88:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0; i<v.size()-1; i++){
                ~^~~~~~~~~~~
railway.cpp:105:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<edge.size(); i++){
               ~^~~~~~~~~~~~
railway.cpp:113:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<ans.size(); i++){
               ~^~~~~~~~~~~
railway.cpp:71:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &N, &M, &K);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
railway.cpp:74:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~
railway.cpp:80:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int sz; scanf("%d", &sz);
           ~~~~~^~~~~~~~~~~
railway.cpp:83:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int x; scanf("%d", &x);
           ~~~~~^~~~~~~~~~

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