Submission #351871

#	Time	Username	Problem	Language	Result	Execution time	Memory
351871		juggernaut	Parrots (IOI11_parrots)	C++14	96 / 100	10 ms	1592 KiB

encoder

#include"encoder.h"
#include"encoderlib.h"
#include<bits/stdc++.h>
using namespace std;
void encode(int n,int a[]){
    int xr=time(NULL)%256;
    if(n<=32){
        for(int i=0;i<n;i++)
            for(int j=0;j<8;j++)
            if(a[i]>>j&1)
                send((i<<3)|j);
    }else{
        for(int i=0;i<n;i++){
            a[i]^=xr;
            while(a[i]>63)send((i<<2)|3),a[i]-=64;
            while(a[i]>15)send((i<<2)|2),a[i]-=16;
            while(a[i]>3)send((i<<2)|1),a[i]-=4;
            while(a[i]>0)send((i<<2)|0),a[i]-=1;
        }
    }
}

decoder

#include"decoder.h"
#include"decoderlib.h"
#include<bits/stdc++.h>
using namespace std;
int res[64];
void decode(int n,int m,int a[]){
    int xr=time(NULL)%256;
    for(int i=0;i<n;i++)res[i]=0;
    if(n<=32){
        for(int i=0;i<m;i++)res[a[i]>>3]|=(1<<(a[i]&7));
    }else{
        for(int i=0;i<m;i++){
            int data=a[i]&3;
            if(data==0)res[a[i]>>2]+=1;
            if(data==1)res[a[i]>>2]+=4;
            if(data==2)res[a[i]>>2]+=16;
            if(data==3)res[a[i]>>2]+=64;
        }
        for(int i=0;i<n;i++)res[i]^=xr;
    }
    for(int i=0;i<n;i++)output(res[i]);
}

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