Submission #97180

#	Time	Username	Problem	Language	Result	Execution time	Memory
97180		maruii	Snowy Roads (JOI16_snowy)	C++14	0 / 100	18 ms	1324 KiB

Anya

#include "Anyalib.h"
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
static vector<int> edge[500];
static int A[500], B[500], prt[500], dth[500], c[500], N, piv;
static void dfs(int x){
	for(auto &i: edge[x]){
		if(prt[x]==i) continue;
		prt[i] = x;
		dth[i] = dth[x]+1;
		dfs(i);
	}
}
static int dfs2(int x){
	int ret = 0;
	for(auto &i: edge[x]){
		if(prt[x]==i) continue;
		c[i] += c[x];
		ret = max(ret, dfs2(i)%12+1);
	}
	if(ret%12 == 0) for(int i=0; i<9; ++i) Save(piv++, (c[x]>>i) & 1);
}
void InitAnya(int N_ , int AA[] , int BB[]) {
	N = N_;
	for(int i=0; i<N; ++i) edge[i].clear();
	for(int i=0; i<N-1; ++i){
		A[i] = AA[i], B[i] = BB[i];
		edge[A[i]].push_back(B[i]);
		edge[B[i]].push_back(A[i]);
	}
	for(int i=0; i<N; ++i) sort(edge[i].begin(), edge[i].end());
	dfs(0);
}
void Anya(int C[]) {
	for(int i=0; i<N-1; ++i) Save(prt[A[i]]==B[i]?A[i]:B[i], C[i]), c[prt[A[i]]==B[i]?A[i]:B[i]] = C[i];
	piv = N;
	dfs2(0);
}

Boris

#include "Borislib.h"
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
static vector<int> edge[500];
static int A[500], B[500], prt[500], dth[500], piv, pivs[500];
static int dfs(int x){
	int ret = 0;
	for(auto &i: edge[x]){
		if(prt[x]==i) continue;
		prt[i] = x;
		dth[i] = dth[x]+1;
		ret = max(ret, dfs(i)%12+1);
	}
	if(ret%12 == 0) pivs[x] = piv, piv += 9;
	return ret;
}
void InitBoris(int N, int AA[], int BB[]) {
	for(int i=0; i<N; ++i) edge[i].clear();
	for(int i=0; i<N-1; ++i){
		A[i] = AA[i], B[i] = BB[i];
		edge[A[i]].push_back(B[i]);
		edge[B[i]].push_back(A[i]);
	}
	for(int i=0; i<N; ++i) sort(edge[i].begin(), edge[i].end());
	piv = N;
	dfs(0);
}

int Boris(int city) {
	int ret = 0;
	while(dth[city]%12) ret += Ask(city), city = prt[city];
	for(int i=0; i<9; ++i) ret += Ask(pivs[city]+i)<<i; 
	return ret;
}

Compilation message (stderr)

Anya.cpp: In function 'int dfs2(int)':
Anya.cpp:24:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^

• Subtask 1: 0 / 15
• Subtask 2: 0 / 5
• Subtask 3: 0 / 35
• Subtask 4: 0 / 45