Submission #218096

#	Time	Username	Problem	Language	Result	Execution time	Memory
218096		patrikpavic2	City (JOI17_city)	C++17	22 / 100	702 ms	108504 KiB

Encoder

#include "Encoder.h"
#include <vector>
#include <cstdio>
#include <set>

#define PB push_back
#define X first
#define Y second

using namespace std;

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

const int N = 5e5 + 500;

vector < int > v[N];
int d0[N], d1[N], sub[N], dulj[N], nw = 0, n;
ll tko[N], jos[N];
set < pii > S;

void dfs_triv(int x,int lst){
	sub[x] = 1;
	for(int y : v[x]){
		if(y != lst){
			dfs_triv(y, x); 
			sub[x] += sub[y];
		}
	}
}

void glupi(int x){
	if(x < n) return;
	tko[d0[x]] = tko[x];
	dulj[d0[x]] = dulj[x] + 1;
	tko[d1[x]] = tko[x] + (1LL << dulj[x]); 
	dulj[d1[x]] = dulj[x] + 1;
	glupi(d0[x]); glupi(d1[x]);
}


void dfs(int x, int lst){
	for(int y : v[x]){
		if(y == lst) continue;
		S.insert({sub[y], y});
	}
	if((int)S.size() >= 2){
		for(;S.size() > 1;){
			d0[nw] = S.begin() -> Y; S.erase(S.begin()); 
			d1[nw] = S.begin() -> Y; S.erase(S.begin()); 
			sub[nw] = sub[d0[nw]] + sub[d1[nw]]; 
			//printf("nw %d -> %d i %d\n", nw, d0[nw], d1[nw]);
			S.insert({sub[nw], nw}); nw++;
		}
		if(!S.empty()){
			int root = S.begin() -> Y;
			tko[root] = tko[x]; dulj[root] = dulj[x];
			glupi(root);
		}
	}
	else{
		for(int y : v[x]){
			if(y == lst) continue;
			tko[y] = tko[x]; dulj[y] = dulj[x] + 1;
		}
	}
	S.clear();
	for(int y : v[x])
		if(y != lst) dfs(y, x);
	//printf("x = %d tko = %lld dulj = %d\n", x, tko[x] + (1 << dulj[x]), dulj[x]);
	Code(x, tko[x] + (1LL << dulj[x]));
}

void Encode(int nn, int u1[], int u2[]){
	n = nn;
	for(int i = 0;i + 1 < n;i++)
		v[u1[i]].PB(u2[i]),
		v[u2[i]].PB(u1[i]);
	nw = n;
	dfs_triv(0, 0);
	dfs(0, 0);
}

Device

#include "Device.h"
#include <cstdio>

typedef long long ll;

void InitDevice(){
	return;
}

bool dijete(ll A, ll B){
	int dulj_A = 0, dulj_B = 0;
	for(;(1LL << dulj_A) <= A;dulj_A++);
	for(;(1LL << dulj_B) <= B;dulj_B++);
	if(dulj_A >= dulj_B) return 0;
	//printf("dulj_A = %d dulj_B = %d\n", dulj_A, dulj_B);
	//printf("Je li B %lld dijete od A %lld\n", B, A);
	for(int i = 0;i + 1 < dulj_A;i++){
		if((A & (1LL << i)) != (B & (1LL << i)))
			return 0;
	}
	//printf("DA\n");
	return 1;
}

int Answer(ll A, ll B)
{
	if(dijete(B, A)) 
		return 0;
	if(dijete(A, B)) 
		return 1;
	return 2;
}

• Subtask 1: 8 / 8
• Subtask 2: 14 / 92