Submission #259702

#	Time	Username	Problem	Language	Result	Execution time	Memory
259702		arnold518	Snowy Roads (JOI16_snowy)	C++14	35 / 100	19 ms	2076 KiB

Anya

#include "Anyalib.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

static const int MAXN = 500;

static int N;
static vector<pii> adj[MAXN+10];
static pii E[MAXN+10];
static int C[MAXN+10], A[MAXN+10];

void dfs(int now, int bef, int d)
{
	A[now]=d;
	for(auto nxt : adj[now])
	{
		if(nxt.first==bef) continue;
		dfs(nxt.first, now, d+C[nxt.second]);
	}
}

void InitAnya(int _N, int A[], int B[])
{
	N=_N;
	for(int i=1; i<N; i++)
	{
		int u=A[i-1]+1, v=B[i-1]+1;
		adj[u].push_back({v, i});
		adj[v].push_back({u, i});
		E[i]={u, v};
	}
}

void Anya(int _C[])
{
	for(int i=2; i<=N; i++) C[i]=_C[i-2];
	for(int i=1; i<=500; i++)
	{
		A[i]=A[i-1]+C[i];
		if(i%10==0)
		{
			for(int j=0; j<9; j++)
			{
				int t=i/10-1;
				if(A[i]&(1<<j)) Save(t*9+j, 1);
			}
		}
	}
	for(int i=1; i<500; i++) if(C[i]) Save(i+449, 1);
}

Boris

#include "Borislib.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

static const int MAXN = 500;

static int N;
static vector<int> adj[MAXN+10];
static pii E[MAXN+10];
static int C[MAXN+10];

void InitBoris(int _N, int A[], int B[])
{
	N=_N;
	for(int i=1; i<N; i++)
	{
		int u=A[i-1]+1, v=B[i-1]+1;
		adj[u].push_back(v);
		adj[v].push_back(u);
		E[i]={u, v};
	}
}

int Boris(int city)
{
	int ret=0; city++;
	int t=city/10-1;
	if(t>=0) for(int i=0; i<9; i++) ret+=(Ask(i+t*9)<<i);
	for(int i=city/10*10+1; i<=city; i++) ret+=Ask(i+449);
	return ret;
}

Compilation message (stderr)

Boris.cpp:14:12: warning: 'C' defined but not used [-Wunused-variable]
 static int C[MAXN+10];
            ^

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