Submission #881639

#	Time	Username	Problem	Language	Result	Execution time	Memory
881639		karrigan	Parrots (IOI11_parrots)	C++14	0 / 100	1 ms	1316 KiB

encoder

#include<bits/stdc++.h>
#include "encoder.h"
#include "encoderlib.h"
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
//chia thanh 4 bit danh so vi tri 2 bit de danh so nhom 2 bit danh so value
int a[8];
int mul[4]={(1<<6),(1<<4),(1<<2),(1<<0)};
void encode(int n,int M[]){
for1(i,0,n-1){
int value=M[i];
int pos=(i)*(1<<4);
for1(j,0,7){
a[j]=(value>>j&1);
}
//0 1 to group 3, 2 3 to group 2, 4 5 to group 1, 6 7 to group 0
reverse(a,a+8);
int cnt=0;
for(int j=0;j<=7;j+=2){
int nval=a[j]*2+a[j+1];
int last4bit=(cnt*(1<<2)+nval);
send(pos+last4bit);
cnt++;
}
}
}
/*signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen("temp.OUT","w",stdout);
    encode(3,{10,30,20});
}*/

decoder

#include<bits/stdc++.h>
#include "decoder.h"
#include "decoderlib.h"
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
//chia thanh 4 bit danh so vi tri 2 bit de danh so nhom 2 bit danh so value
int mul[4]={(1<<6),(1<<4),(1<<2),(1<<0)};
int b[16];
void decode(int n,int l,int x[]){
for1(i,0,l-1){
int vl=x[i];
int pos=(vl>>4);
int last4bit=vl%(1<<4);
int group=(last4bit>>2);
int valuegr=(last4bit%(1<<2));
b[pos]+=valuegr*mul[group];
}
for1(i,0,n-1)output(b[i]);
}
/*signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    //freopen("temp.INP","r",stdin);
    //freopen("temp.OUT","w",stdout);
    encode(3,{10,30,20});
}*/

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