Submission #43272

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
43272	2018-03-12 13:00:05	ffresh	우호 조약 체결 (JOI14_friends)	C++14	35 / 100	127 ms	8156 KiB

friends

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#include <bits/stdc++.h>
using namespace std;
const int N = 1e5+15;
int par[N],sz[N],esz[N];
vector<int> adj[N];
int f(int a){
  if(a==par[a])return a;
  return par[a]= f(par[a]);
}
void merge(int a,int b){
  a= f(a),b= f(b);
  if(a!=b){
    par[b]= a;
    sz[a]+=sz[b];
    esz[a]+=esz[b];
  }
  ++esz[a];
}
bool vis[N];
void dfs(int root){
  vis[root]= 1;
  for(int i=0;i<adj[root].size();++i){
    int u = adj[root][i];
    if(!vis[u]){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

friends.cpp: In function 'void dfs(int)':
friends.cpp:28:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<adj[root].size();++i){
               ^
friends.cpp: In function 'int main()':
friends.cpp:52:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j=0;j<adj[i].size();++j){
                 ^
friends.cpp:41:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
friends.cpp:44:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&a,&b);
                      ^

• Subtask 1: 5 / 5
• Subtask 2: 30 / 30
• Subtask 3: 0 / 65