제출 #71508

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
71508		FLDutchman	앵무새 (IOI11_parrots)	C++14	96 / 100	23 ms	2728 KiB

encoder

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

typedef int INT;

#define FOR(i,l,r) for(int i = (l); i < (r); i++)
#define snd second
#define fst first
#define V vector
#define pb push_back

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;

int seed = 100;

void encode(int N, int M[]){
	if(N <= 32) FOR(i, 0, N) FOR(j, 0, 8) {if(M[i]&(1<<j)) send( (i<<3)+j);} 
	else {
		srand(seed);
		int cnt = 0;
		FOR(i, 0, N) {
			int r = (rand() % 256);
			FOR(j, 0, 4){
				int m = M[i] ^ r;
				int k = (m>>(2*j))& 3 ;
				//cerr << cnt << endl;
				FOR(_,0,k) {send( (i<<2)+j); cnt++;}
			}
		}
	}
}

decoder

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

typedef int INT;

#define FOR(i,l,r) for(int i = (l); i < (r); i++)
#define snd second
#define fst first
#define V vector
#define pb push_back

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;

int Seed = 100;

void decode(int N, int L, int X[]) {
	if(N <= 32){
		vi msg(N, 0) ;
		FOR(i, 0, L) msg[ (X[i]) >>3] |= 1<<(X[i]&7);
		FOR(i, 0, N) output(msg[i]);
	} else {
		srand(Seed);	
		//cerr << "{ ";
		//FOR(i, 0, 64) cerr << rand() % 256 << ", ";
		//cerr << "}"<<endl;
		vi msg(4*N, 0);
		FOR(i, 0, L) msg[X[i]]++;
		//for(int k : msg) cout << k << " ";
		//cout<<endl;
		FOR(i, 0, N) {
			int c = 0;
			FOR(k, 0, 4) c |= msg[4*i+k] << (2*k);
			c ^= (rand() % 256);
			//cerr<<c<<endl;
			output(c);
		}
	}
}

• Subtask 1: 17 / 17
• Subtask 2: 17 / 17
• Subtask 3: 18 / 18
• Subtask 4: 29 / 29
• Subtask 5: 15 / 19