Submission #573445

#	Time	Username	Problem	Language	Result	Execution time	Memory
573445		Vanilla	Parrots (IOI11_parrots)	C++17	17 / 100	2 ms	648 KiB

encoder

#include <bits/stdc++.h>
#include "encoder.h"
#include "encoderlib.h"
using namespace std;

const int maxn = 64;
const int bits = 8;
const int sg = 7;
const int maxval = 256;

vector <int> mp[maxval];

void encode(int n, int m[]) {
    int ct = 0;
    for (int i1 = 0; i1 <= 3 && ct < maxval; i1++)
        for (int i2 = i1; i2 <= 3 && ct < maxval; i2++)
            for (int i3 = i2; i3 <= 3 && ct < maxval; i3++)
                for (int i4 = i3; i4 <= 3 && ct < maxval; i4++)
                    for (int i5 = i4; i5 <= 3 && ct < maxval; i5++)
                        for (int i6 = i5; i6 <= 3 && ct < maxval; i6++)
                            for (int i7 = i6; i7 <= 3 && ct < maxval; i7++){
                                vector <int> v = {i1, i2, i3, i4, i5, i6, i7};
                                mp[ct++] = v;
                            }

    
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < 7; j++){
            int v = i << 2;
            v+=mp[m[i]][j];
            send(v);
        }
    }
}

decoder

#include <bits/stdc++.h>
#include "decoder.h"
#include "decoderlib.h"
using namespace std;

const int maxn = 64;
const int bits = 8;
const int sg = 7;
const int maxval = 256;
vector <int> v[maxn + 1];
map <vector <int>, int> revmp;

void decode(int n, int l, int x[]) {
    int ct = 0;
    for (int i1 = 0; i1 <= 3 && ct < maxval; i1++)
		for (int i2 = i1; i2 <= 3 && ct < maxval; i2++)
			for (int i3 = i2; i3 <= 3 && ct < maxval; i3++)
				for (int i4 = i3; i4 <= 3 && ct < maxval; i4++)
					for (int i5 = i4; i5 <= 3 && ct < maxval; i5++)
						for (int i6 = i5; i6 <= 3 && ct < maxval; i6++)
							for (int i7 = i6; i7 <= 3 && ct < maxval; i7++){
								vector <int> x = {i1, i2, i3, i4, i5, i6, i7};
								revmp[x] = ct++;
							}	
	
	for (int i = 0; i < n; i++){
		v[i].clear();
	}
	for (int i = 0; i < l; i++){
		int idx = 0;
		for (int j = 2; j < 8; j++){
			idx+=(1 << (j - 2)) * !!(x[i] & (1 << j));
		}
		v[idx].push_back(x[i] & 3);
	}
	for (int i = 0; i < n; i++){
		sort(v[i].begin(), v[i].end());
		output(revmp[v[i]]);
	}
}

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