제출 #260646

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
260646		Saboon	길고양이 (JOI20_stray)	C++14	100 / 100	73 ms	17284 KiB

Anthony

#include "Anthony.h"
#include <bits/stdc++.h>

using namespace std;

const int maxn = 20'000 + 10;

int h[maxn], c[maxn];
vector<int> g[maxn];
int Q[maxn], tail, head;

int seq[] = {1, 1, 0, 0, 1, 0};
int col[maxn];

void dfs(int v, int idx = 0, int par = -1){
	for (int i = 0; i < g[v].size(); i++){
		if (g[v][i] == par){
			g[v].erase(g[v].begin()+i);
			break;
		}
	}
	if (g[v].empty())
		return;
	if (g[v].size() == 1){
		col[g[v][0]] = seq[idx];
		dfs(g[v][0], (idx+1)%6, v);
		return;
	}
	for (auto u : g[v]){
		col[u] = 1-col[v];
		dfs(u, 0, v);
	}
}

void bfs(int v){
	memset(h, -1, sizeof h);
	Q[head++] = v;
	h[v] = 0;
	while (tail < head){
		v = Q[tail++];
		for (auto u : g[v])
			if (h[u] == -1)
				h[u] = h[v]+1, Q[head++] = u;
	}
}

vector<int> Mark(int n, int m, int A, int B, vector<int> U, vector<int> V) {
	vector<int> X(m);
	for (int i = 0; i < m; i++){
		g[U[i]].push_back(V[i]);
		g[V[i]].push_back(U[i]);
	}
	bfs(0);
	if (A >= 3){
		for (int i = 0; i < m; i++){
			int v = V[i], u = U[i];
			if (h[v] == h[u])
				X[i] = h[v]%3;
			else
				X[i] = (max(h[v],h[u])+2)%3;
		}
		return X;
	}
	dfs(0);
	for (int i = 0; i < m; i++){
		int v = V[i], u = U[i];
		if (h[v] > h[u])
			X[i] = col[v];
		else
			X[i] = col[u];
	}
	return X;
}

Catherine

#include "Catherine.h"
#include <bits/stdc++.h>

using namespace std;

int A, B, last = -1, sure = 0;
string s[] = {"111100", "021001", "110010", "200101", "111011", "110110"};
string now;
bool first;

void Init(int a, int b) {
	A = a, B = b;
	last = -1, sure = 0;
	now.clear();
	first = true;
}


int Move(vector<int> y){
	if (A >= 3){
		int a = -1, b = -1;
		for (int j = 0; j < A; ++j) {
			if (y[j] != 0){
				if (a == -1)
					a = j;
				else
					b = j;
			}
		}
		if (b == -1)
			return a;
		if (a+1 == b)
			return a;
		return b;
	}
	int deg = y[0] + y[1] + (last != -1);
	if (deg == 1){ // we are in a leaf
		sure = true;
		if (last != -1)
			return -1;
		assert(y[y[1]==1] > 0);
		return last = (y[1] == 1);
	}
	if (deg > 2){
		sure = true;
		int nex = ((y[1] + (last==1)) == 1);
		if (last == nex)
			return -1;
		assert(y[nex] > 0);
		return last = nex;
	}
	if (sure){
		assert(y[y[1]==1] > 0);
		return last = (y[1] == 1);
	}
	if (first){
		now += (char)(y[0]+'0');
		now += (char)(y[1]+'0');
		now += (char)((y[1]>0)+'0');
		first = false;
		assert(y[y[1]>0] > 0);
		return last = (y[1] > 0);
	}
	now += (char)((y[1]==1)+'0');
	if (now.size() == 6){
		bool found = 0;
		for (int j = 0; j < 6; j++)
			if (now == s[j])
				found = 1;
		if (now.substr(2, 4) == "1100")
			found = 1;
		sure = 1;
		if (found)
			return -1;
		assert(y[y[1]==1] > 0);
		return last = (y[1] == 1);
	}
	assert(y[y[1]==1] > 0);
	return last = (y[1] == 1);
}

컴파일 시 표준 에러 (stderr) 메시지

Anthony.cpp: In function 'void dfs(int, int, int)':
Anthony.cpp:16:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < g[v].size(); i++){
                  ~~^~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 2 / 2
• Subtask 3: 2 / 2
• Subtask 4: 9 / 9
• Subtask 5: 5 / 5
• Subtask 6: 71 / 71
• Subtask 7: 9 / 9