Submission #23624

#	Time	Username	Problem	Language	Result	Execution time	Memory
23624		Hiasat	Parrots (IOI11_parrots)	C++14	52 / 100	16 ms	2432 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
 
#include <bits/stdc++.h>
 
 
using namespace std;
 
 
void encode(int N, int M[])
{
	for (int i = 0; i < N; i++) {
		for (int bit = 0; bit <= 7 ; bit++) {
			int cur = 0;
			int rem = i * 8 + (7-bit);
			for (int j = 6 ; j >= 0 ; j--) {
				if (rem >= (1 << j)) {
					cur = cur | ( 1 << j);
					rem -= (1 << j);
				}
			}
			cur = cur | ((M[i] & (1 << bit)) ? (1 << 7) : 0);
			send(cur);
		}
	}
}

decoder

#include "decoder.h"
#include "decoderlib.h"
 
#include <bits/stdc++.h>
 
 
 
using namespace std;
 
 
 
int ans[310];
 
void decode(int N, int L, int X[])
{	
  int i, b;
  for(i=0; i<L; i++) {
  	bool bit = (X[i] & (1 << 7));
  	int nw = X[i] - (1 << 7)*bit;
  	ans[nw] = bit;
  }
  for (int i = 0; i < N; ++i){
  	int cur = 0;
  	for(int j = 0 ; j <= 7 ; j++){
  		cur += ans[i*8+j] * (1 << (7-j));
  	}
  	output(cur);
  }
}

Compilation message (stderr)

decoder.cpp: In function 'void decode(int, int, int*)':
decoder.cpp:16:10: warning: unused variable 'b' [-Wunused-variable]
   int i, b;
          ^

• Subtask 1: 17 / 17
• Subtask 2: 17 / 17
• Subtask 3: 18 / 18
• Subtask 4: 0 / 29
• Subtask 5: 0 / 19