Submission #796027

#	Time	Username	Problem	Language	Result	Execution time	Memory
796027		khshg	Parrots (IOI11_parrots)	C++14	98 / 100	7 ms	1356 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
#include <bits/stdc++.h>
using namespace std;
 
void encode(int N, int M[]) {
	vector<array<int, 4>> H;
	for(int Os = 0; Os <= 7; ++Os) {
		for(int Is = 0; Is + Os <= 7; ++Is) {
			for(int Zs = 0; Zs + Is + Os <= 7; ++Zs) {
				for(int Es = 0; Es + Zs + Is + Os <= 7; ++Es) {
					H.push_back({Os, Is, Zs, Es});
				}
			}
		}
	}
	sort(begin(H), end(H));
	for(int i = 0; i < N; ++i) {
		array<int, 4> k = H[M[i]];
		for(int x : {0, 1, 2, 3}) while(k[x]--) send(((i << 2) ^ x));
	}
}

decoder

#include "decoder.h"
#include "decoderlib.h"
#include <bits/stdc++.h>
using namespace std;
 
void decode(int N, int L, int X[]) {
	int H[8][8][8][8];
	memset(H, -1, sizeof(H));
	for(int Os = 0, C = 0; Os <= 7; ++Os) {
		for(int Is = 0; Is + Os <= 7; ++Is) {
			for(int Zs = 0; Zs + Is + Os <= 7; ++Zs) {
				for(int Es = 0; Es + Zs + Is + Os <= 7; ++Es) {
					H[Os][Is][Zs][Es] = C++;
				}
			}
		}
	}
	vector<array<int, 4>> cnt(N);
	for(int i = 0; i < L; ++i) {
		++cnt[(X[i] >> 2)][(X[i] & 3)];
	}
	for(int i = 0; i < N; ++i) {
		output(H[cnt[i][0]][cnt[i][1]][cnt[i][2]][cnt[i][3]]);
	}
}

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