Submission #43352

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
43352	2018-03-14 04:54:51	ffresh	전압 (JOI14_voltage)	C++14	100 / 100	174 ms	54596 KiB

voltage

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#include <bits/stdc++.h>
using namespace std;
const int N = 1e5+15,M = 2e5+15;
vector<int> adj[N];
int dp2[N],dp[N],depth[N];
bool vis[N];
stack<int> st;
int parent[N];
int a[M],b[M];
bool used[M];
void dfs(int root){
  vis[root]= 1;
  st.push(root);
  for(int i=0;i<adj[root].size();++i){
    int id = adj[root][i];
    int u = a[id]^b[id]^root;
    if(!vis[u]){
      used[id]= 1;
      parent[u] = root;
      depth[u] = depth[root]+1;
      dfs(u);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

voltage.cpp: In function 'void dfs(int)':
voltage.cpp:23:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<adj[root].size();++i){
               ^
voltage.cpp: In function 'int main()':
voltage.cpp:42:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&a[i],&b[i]);
                            ^

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 35 / 35
• Subtask 4: 45 / 45