Submission #573200

#	Time	Username	Problem	Language	Result	Execution time	Memory
573200		TimDee	Parrots (IOI11_parrots)	C++14	52 / 100	3 ms	1048 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
#define forn(i,n) for (int i=0; i<n; i++)

void encode(int n, int message[]) {
    forn(i,n) {
        int x=message[i];
        int a=x%4;
        send(a+i*16);
        x/=4;
        a=x%4;
        send(a+i*16+4);
        x/=4;
        a=x%4;
        send(a+i*16+8);
        x/=4;
        a=x%4;
        send(a+i*16+12);
    }
}

decoder

#include "decoder.h"
#include "decoderlib.h"

#define forn(i,n) for (int i=0; i<n; i++)

void decode(int N, int L, int message[]) {
    int a[N];
    forn(i,N) a[i]=0;
    forn(i,L) {
        int x=message[i];
        int j=x/16;
        int k=(x/4)%4;
        int v=x%4;
        if (k==0) {
            a[j]+=v;
        } else if (k==1) {
            a[j]+=v*4;
        } else if (k==2) {
            a[j]+=v*16;
        } else {
            a[j]+=v*64;
        }
    }
    forn(i,N) output(a[i]);
}

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