제출 #596406

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
596406	2022-07-14 17:17:07	penguinhacker	수도 (JOI20_capital_city)	C++17	100 / 100	355 ms	68896 KiB

capital_city

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#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ar array
 
const int mxN=2e5;
int n, k, c[mxN], d[mxN], anc[mxN][18], tin[mxN], t, who[mxN], cnt[mxN];
vector<int> oc[mxN], adj1[mxN], adj2[mxN], adj3[mxN], st;
bool vis[mxN], out[mxN];
 
void dfs1(int u=0) {
  tin[u]=t++;
  for (int i=1; i<18; ++i)
    anc[u][i]=anc[anc[u][i-1]][i-1];
  for (int v : adj1[u])
    if (v!=anc[u][0]) {
      d[v]=d[u]+1, anc[v][0]=u;
      dfs1(v);
    }
}
 
int lca(int u, int v) {
  if (d[u]>d[v])
    swap(u, v);
  for (int i=17; ~i; --i)
    if (d[v]-(1<<i)>=d[u])
      v=anc[v][i];
  if (u==v)
    return u;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

capital_city.cpp: In function 'int main()':
capital_city.cpp:75:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |   for (int j=1; j<oc[i].size(); ++j)
      |                 ~^~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 10 / 10
• Subtask 3: 30 / 30
• Subtask 4: 59 / 59