oj.uz

Submission #308004

# Submission time Handle Problem Language Result Execution time Memory
308004 2020-09-29T17:59:32 Z kimjg1119 Data Transfer (IOI19_transfer) C++17
92 / 100
 318 ms 2788 KB 
#include "transfer.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> get_attachment_sub1(vector<int> sc) {
	int a[10] = {};
	for (int i = 0; i < sc.size(); i++) {
		for (int j = 0; j < 6; j++)
			if(sc[i]) a[j] ^= (i + 1) & (1 << j);
	}
	vector<int> r;
	for (int i = 0; i < 6; i++)
		if (a[i]) r.push_back(1);
		else r.push_back(0);
	
	vector<int> at;
	for (int i = 0; i < 1; i++) {
		for (int j = 0; j < 6; j++)
			at.push_back(r[j]);
	}
	int s = 0;
	for (int i = 0; i < 6; i++) s += r[i];
	at.push_back(s % 2);
	return at;
}

vector<int> get_attachment_sub2(vector<int> sc) {
	int a[10] = {};
	for (int i = 0; i < sc.size(); i++) {
		for (int j = 0; j < 8; j++)
			if (sc[i]) a[j] ^= (i + 1) & (1 << j);
	}
	vector<int> r;
	for (int i = 0; i < 8; i++)
		if (a[i]) r.push_back(1);
		else r.push_back(0);

	vector<int> at;
	for (int i = 0; i < 2; i++) {
		for (int j = 0; j < 8; j++)
			at.push_back(r[j]);
	}
	return at;
}

std::vector<int> get_attachment(std::vector<int> source) {
	if (source.size() == 63) return get_attachment_sub1(source);
	else return get_attachment_sub2(source);
}

vector<int> retrieve_sub1(vector<int> d) {
	vector<int> t1;
	for (int i = 0; i < 7; i++) t1.push_back(d[i+63]);
	for (int i = 0; i < 7; i++) d.pop_back();
	int p = t1.back(); t1.pop_back();

	bool flag = true; int ts = 0;
	for (int i = 0; i < 6; i++) ts += t1[i];
	if (ts % 2 != p) flag = false;

	if (flag) {
		int a[10] = {};
		for (int i = 0; i < d.size(); i++) {
			for (int j = 0; j < 6; j++)
				if (d[i]) a[j] ^= (i+1) & (1 << j);
		}
		int r = 0;
		for (int i = 0; i < 6; i++) a[i] ^= t1[i] * (1<<i);
		for (int i = 0; i < 6; i++)
			if (a[i]) r |= (1 << i);
		if (r > 0) d[r - 1] = 1 - d[r - 1];
		return d;
	}
	else return d;
}

vector<int> retrieve_sub2(vector<int> d) {
	vector<int> t, t1, t2;
	for (int i = 255; i < d.size(); i++) t.push_back(d[i]);
	for (int i = 0; i < 16; i++) d.pop_back();
	for (int i = 0; i < 8; i++) t1.push_back(t[i]);
	for (int i = 0; i < 8; i++) t2.push_back(t[i + 8]);

	bool flag = true;
	for (int i = 0; i < 8; i++)
		if (t1[i] != t2[i]) flag = false;
	if (flag) {
		int a[10] = {};
		for (int i = 0; i < d.size(); i++) {
			for (int j = 0; j < 8; j++)
				if (d[i]) a[j] ^= (i + 1) & (1 << j);
		}
		int r = 0;
		for (int i = 0; i < 8; i++) a[i] ^= t1[i] * (1 << i);
		for (int i = 0; i < 8; i++)
			if (a[i]) r |= (1 << i);
		if (r > 0) d[r - 1] = 1 - d[r - 1];
		return d;
	}
	else return d;
}

std::vector<int> retrieve(std::vector<int> data) {
	if (data.size() < 255) return retrieve_sub1(data);
	else return retrieve_sub2(data);
}

Compilation message

transfer.cpp: In function 'std::vector<int> get_attachment_sub1(std::vector<int>)':
transfer.cpp:8:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for (int i = 0; i < sc.size(); i++) {
      |                  ~~^~~~~~~~~~~
transfer.cpp: In function 'std::vector<int> get_attachment_sub2(std::vector<int>)':
transfer.cpp:30:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |  for (int i = 0; i < sc.size(); i++) {
      |                  ~~^~~~~~~~~~~
transfer.cpp: In function 'std::vector<int> retrieve_sub1(std::vector<int>)':
transfer.cpp:64:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |   for (int i = 0; i < d.size(); i++) {
      |                   ~~^~~~~~~~~~
transfer.cpp: In function 'std::vector<int> retrieve_sub2(std::vector<int>)':
transfer.cpp:80:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |  for (int i = 255; i < d.size(); i++) t.push_back(d[i]);
      |                    ~~^~~~~~~~~~
transfer.cpp:90:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |   for (int i = 0; i < d.size(); i++) {
      |                   ~~^~~~~~~~~~

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1144 KB Output is correct
2 Correct 6 ms 1152 KB Output is correct
3 Correct 7 ms 908 KB Output is correct
4 Correct 8 ms 1148 KB Output is correct
5 Correct 7 ms 1036 KB Output is correct
6 Correct 7 ms 1152 KB Output is correct
7 Correct 8 ms 1036 KB Output is correct
8 Correct 6 ms 908 KB Output is correct
9 Correct 6 ms 828 KB Output is correct
10 Correct 8 ms 908 KB Output is correct
11 Correct 6 ms 1276 KB Output is correct
12 Correct 6 ms 1152 KB Output is correct
13 Correct 7 ms 908 KB Output is correct
14 Correct 6 ms 1144 KB Output is correct
15 Correct 7 ms 1148 KB Output is correct
16 Correct 6 ms 908 KB Output is correct
17 Correct 6 ms 908 KB Output is correct

Subtask #2
32.0 / 40.0

# Verdict Execution time Memory Grader output
1 Partially correct 266 ms 2500 KB Partially correct
2 Partially correct 260 ms 2500 KB Partially correct
3 Partially correct 259 ms 2656 KB Partially correct
4 Partially correct 270 ms 2660 KB Partially correct
5 Partially correct 297 ms 2672 KB Partially correct
6 Partially correct 318 ms 2628 KB Partially correct
7 Partially correct 287 ms 2660 KB Partially correct
8 Partially correct 251 ms 2668 KB Partially correct
9 Partially correct 231 ms 2668 KB Partially correct
10 Partially correct 230 ms 2500 KB Partially correct
11 Partially correct 229 ms 2788 KB Partially correct
12 Partially correct 246 ms 2788 KB Partially correct
13 Partially correct 249 ms 2672 KB Partially correct
14 Partially correct 269 ms 2664 KB Partially correct
15 Partially correct 258 ms 2500 KB Partially correct
16 Partially correct 252 ms 2672 KB Partially correct
17 Partially correct 249 ms 2500 KB Partially correct
18 Partially correct 245 ms 2672 KB Partially correct
19 Partially correct 250 ms 2628 KB Partially correct