제출 #173479

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
173479	2020-01-04 08:48:32	jhwest2	우호 조약 체결 (JOI14_friends)	C++14	100 / 100	296 ms	11384 KiB

friends

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#include <bits/stdc++.h>
#define va first
#define vb second
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
int N, M;
int par[100010], size[100010];
vector<int> E[100010];
int Find(int a) {
  if (par[a] == a) return a;
  return par[a] = Find(par[a]);
}
void Union(int a, int b) {
  if (Find(a) == Find(b)) return;
  size[Find(a)] += size[Find(b)];
  par[Find(b)] = Find(a);
}
void dfs(int key, int cur) {
  Union(key, cur);
  for (int nxt : E[cur]) {
    if (Find(nxt) == Find(cur)) continue;
    dfs(key, nxt);
  }
}
int main() {
  cin.tie(0); ios_base::sync_with_stdio(0);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

friends.cpp: In function 'int main()':
friends.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j=1; j<E[i].size(); j++) {
                  ~^~~~~~~~~~~~

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