제출 #476560

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
476560		AdamGS	저장 (Saveit) (IOI10_saveit)	C++14	50 / 100	263 ms	13360 KiB

encoder

#include "grader.h"
#include "encoder.h"
#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=1e3+7, INF=1e9+7;
vector<ll>V[LIM], P;
ll oc[LIM], odw[LIM], odl[LIM];
void DFS(int x) {
	P.pb(x);
	odw[x]=1;
	sort(all(V[x]));
	for(auto i : V[x]) if(!odw[i]) {
		oc[i]=x;
		DFS(i);
	}
}
void encode(int n, int h, int m, int *a, int *b) {
	rep(i, m) {
		V[a[i]].pb(b[i]);
		V[b[i]].pb(a[i]);
	}
	DFS(0);
	rep(i, n-1) rep(j, 10) encode_bit((oc[i+1]&(1<<j))>0);
	rep(i, h) {
		rep(j, n) odl[j]=INF;
		queue<int>q;
		q.push(i);
		odl[i]=0;
		while(!q.empty()) {
			int p=q.front(); q.pop();
			for(auto j : V[p]) if(odl[j]>odl[p]+1) {
				odl[j]=odl[p]+1;
				q.push(j);
			}
		}
		rep(j, 10) encode_bit((odl[0]&(1<<j))>0);
		rep(j, P.size()-1) {
			int x=odl[P[j+1]]-odl[oc[P[j+1]]]+1;
			rep(l, 2) encode_bit((x&(1<<l))>0);
		}
	}
}

decoder

#include "grader.h"
#include "decoder.h"
#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=1e3+7;
vector<int>V[LIM], P;
int odw[LIM], oc[LIM], odl[LIM];
void DFS(int x) {
	P.pb(x);
	odw[x]=1;
	sort(all(V[x]));
	for(auto i : V[x]) if(!odw[i]) DFS(i);
}
void decode(int n, int h) {
	rep(i, n-1) {
		int x=0;
		rep(j, 10) x+=decode_bit()*(1<<j);
		oc[i+1]=x;
		V[i+1].pb(x);
		V[x].pb(i+1);
	}
	DFS(0);
	rep(i, h) {
		rep(j, n) odl[j]=0;
		rep(j, 10) odl[0]+=decode_bit()*(1<<j);
		rep(j, P.size()-1) {
			int x=0;
			rep(l, 2) x+=decode_bit()*(1<<l);
			--x;
			odl[P[j+1]]=odl[oc[P[j+1]]]+x;
		}
		rep(j, n) hops(i, j, odl[j]);
	}
}

컴파일 시 표준 에러 (stderr) 메시지

encoder.cpp: In function 'void encode(int, int, int, int*, int*)':
encoder.cpp:7:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
encoder.cpp:44:3: note: in expansion of macro 'rep'
   44 |   rep(j, P.size()-1) {
      |   ^~~

decoder.cpp: In function 'void decode(int, int)':
decoder.cpp:6:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 | #define rep(a, b) for(int a = 0; a < (b); ++a)
      |                                    ^
decoder.cpp:32:3: note: in expansion of macro 'rep'
   32 |   rep(j, P.size()-1) {
      |   ^~~

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25