제출 #246351

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
246351	2020-07-08 19:22:22	kostia244	길고양이 (JOI20_stray)	C++17	100 / 100	79 ms	22912 KiB

Anthony

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#include "Anthony.h"
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
namespace anton {
const int maxn = 1<<17;
vector<int> val, p, pidx, col,  god = {0, 0, 1, 0, 1, 1};
vector<array<int, 2>> g[maxn];
void dfs(int v) {
  for(auto &[i, idx] : g[v]) if(i != p[v]) {
    p[i] = v, pidx[i] = idx;
    col[i] = col[v]^1;
    dfs(i);
  }
  //cout << v << " // " << col[v] << '\n';
  if(!v || g[v].size() == 2) return;
  int u = p[v];
  vector<int> l {v};
  while(u && g[u].size() == 2) {
    l.pb(u);
    u = p[u];
  }
  int b = 0;
  while(god[b] != col[v] || god[(b + l.size() - 1)%6] != col[l.back()]) b++;
  //cout << v << " /// " << b << endl;
  //cout << god[b] << " vs " << col[v] << '\n';
  for(int i = 0; i < l.size(); i++) val[pidx[l[i]]] = god[(i+b)%6];
}
 
 
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Catherine

 
 
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컴파일 시 표준 에러 (stderr) 메시지

Anthony.cpp: In function 'void anton::dfs(int)':
Anthony.cpp:29:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < l.size(); i++) val[pidx[l[i]]] = god[(i+b)%6];
                 ~~^~~~~~~~~~

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