Submission #1263206

#	Time	Username	Problem	Language	Result	Execution time	Memory
1263206		lambd47	Parrots (IOI11_parrots)	C++20	17 / 100	2 ms	840 KiB

encoder

#include <bits/stdc++.h>
using namespace std;
#include "encoder.h"
#include "encoderlib.h"
#define L(i,j,k) for(int i=(j);i<=(k);i++)
#define all(v) (v).begin(),(v).end()
#define sz(v) ((int)v.size())

void encode(int n, int vec[])
{
    vector<array<int,7>> code(256);
    map<array<int,7>,int> decode;
    int nat=0;
    array<int,7> at;
    auto brute=[&](auto&&self,int id, int dat)->void{
        if(nat>255)return;
        if(id==7){
            code[nat]=at;
            decode[at]=nat;
            nat++;
            return;
        }
        while(dat<=3){
            at[id]=dat;
            self(self,id+1,dat);
            dat++;
        }
    };
    brute(brute,0,0);

    int dat=0;
    vector<int> resp;
    L(i,0,n-1){
        L(j,0,6)resp.push_back(dat+code[vec[i]][j]);
        dat=resp.back();
    }
    L(i,0,sz(resp)-1)send(resp[i]);
    return;
}

decoder

#include <bits/stdc++.h>
#include "decoder.h"
#include "decoderlib.h"
using namespace std;
#define L(i,j,k) for(int i=(j);i<=(k);i++)
#define all(v) (v).begin(),(v).end()
#define sz(v) ((int)v.size())



void decode(int n, int l, int vec[])
{
    vector<array<int,7>> code(256);
    map<array<int,7>,int> decode;
    int nat=0;
    array<int,7> at;
    auto brute=[&](auto&&self,int id, int dat)->void{
        if(nat>255)return;
        if(id==7){
            code[nat]=at;
            decode[at]=nat;
            nat++;
            return;
        }
        while(dat<=3){
            at[id]=dat;
            self(self,id+1,dat);
            dat++;
        }
    };
    brute(brute,0,0);
    sort(vec,vec+l);

    int dat=0;
    array<int,7> vecat;
    for(int i=0;i<l;i+=7){
        L(j,0,6)vecat[j]=vec[i+j]-dat;
        dat=vec[i+6];
//        cout<<decode[vecat]<<" ";
        output(decode[vecat]);
    }

}

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