Submission #144381

#	Time	Username	Problem	Language	Result	Execution time	Memory
144381		arayi	Izlet (COI19_izlet)	C++17	43 / 100	949 ms	40484 KiB

izlet

#include <iostream>
#include <string>
#include <queue>
#include <stack>
#include <algorithm>
#include <math.h>
#include <vector>
#include <cstring>
#include <ctime>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <ctime>
#define fr first
#define sc second
#define MP make_pair
#define PB push_back
#define fastio ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define lli long long int
#define y1 arayikhalatyan
using namespace std;

lli gcd(lli a, lli b) {
	if (b == 0)
		return a;
	return gcd(b, a % b);
}
lli cg(lli n) {
	return n ^ (n >> 1);
}
lli SUM(lli a)
{
	return (a * (a + 1) / 2);
}
bool CAN(int x, int y, int n, int m)
{
	if (x >= 0 && y >= 0 && x < n && y < m)
	{
		return true;
	}
	return false;
}
double her(double x1, double y1, double x2, double y2)
{
	return sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
}
string strsum(string a, string b)
{
	int p = 0;
	string c;
	reverse(a.begin(), a.end());
	reverse(b.begin(), b.end());
	if (b.length() < a.length())
	{
		for (int i = b.length(); i < a.length(); i++)
		{
			b += "0";
		}
	}
	else
	{
		for (int i = a.length(); i < b.length(); i++)
		{
			a += "0";
		}
	}

	a += "0", b += "0";
	for (int i = 0; i < a.length(); i++)
	{
		c += (a[i] - '0' + b[i] - '0' + p) % 10 + '0';
		p = (a[i] + b[i] - '0' - '0' + p) / 10;
	}
	if (c[c.length() - 1] == '0') c.erase(c.length() - 1, 1);
	reverse(c.begin(), c.end());
	return c;
}
string strmin(string a, string b)
{
	if (a.length() > b.length()) return b;
	if (b.length() > a.length()) return a;
	for (int i = 0; i < a.length(); i++)
	{
		if (a[i] > b[i]) return b;
		if (b[i] > a[i]) return a;
	}
	return a;
}

char vow[] = { 'a', 'e', 'i', 'o', 'u' };
int dx[] = { 1, -1, 0, 0 };
int dy[] = { 0, 0, 1, -1 };



const int N = 1e6 + 30;
const lli mod = 998244353;

int n, t;
int a[3010][3010], pat[3010], sm, p[3010];
vector <int> g[3010];
int get_parent(int x)
{
	if (p[x] == x) return x;
	return p[x] = get_parent(p[x]);
}
bool col[3010];
void dfs(int v)
{
	col[v] = true;
	for (auto p : g[v])
	{
		if (!col[p])
		{
			cout << v + 1 << " " << p + 1 << endl;
			dfs(p);
		}
	}
}
int main()
{
	fastio;
	//freopen("c.in", "r", stdin);
	cin >> t >> n;
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			cin >> a[i][j];
		}
	}
	if (t == 1)
	{
		for (int i = 0; i < n; i++) p[i] = i;
		for (int i = 0; i < n; i++)
			for (int j = i + 1; j < n; j++)
				if (a[i][j] == 1)
				{
					p[j] = i;
					g[i].PB(j);
					g[j].PB(i);
				}
		pat[0] = 1;
		for (int i = 0; i < g[0].size(); i++) pat[g[0][i]] = 1;
		for (int i = 0; i < n; i++)
		{
			if (a[0][i] == 2)
			{
				if (get_parent(0) == get_parent(i)) continue;
				pat[i] = 2;	
				for (int j = 0; j < g[i].size(); j++) pat[g[i][j]] = 2;
				g[0].PB(i);
				g[i].PB(0);
				p[i] = 0;
			}
		}
		for (int i = 0; i < n; i++)
		{
			cout << pat[i] << " ";
		}
		cout << endl;
		dfs(0);
	}
	if (t == 2) {
		pat[0] = 1;
		sm = 2;
		for (int i = 1; i < n; i++)
		{
			if (a[0][i] > a[0][i - 1])
			{
				pat[i] = sm;
				sm++;
			}
			else
			{
				set <int> ss;
				for (int j = i - 1; j >= 0; j--)
				{
					ss.insert(pat[j]);
					if (a[i][j] == a[i][j + 1] && a[i][j] == ss.size())
					{
						//	cout << i << " " << j << " " << a[i][j] << endl;
						pat[i] = pat[j];
						break;
					}
				}
			}
		}
		for (int i = 0; i < n; i++)
		{
			cout << pat[i] << " ";
		}
		cout << endl;
		for (int i = 0; i < n - 1; i++)
		{
			cout << i + 1 << " " << i + 2 << endl;
		}
	}
	return 0;
}

Compilation message (stderr)

izlet.cpp: In function 'std::__cxx11::string strsum(std::__cxx11::string, std::__cxx11::string)':
izlet.cpp:57:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = b.length(); i < a.length(); i++)
                            ~~^~~~~~~~~~~~
izlet.cpp:64:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = a.length(); i < b.length(); i++)
                            ~~^~~~~~~~~~~~
izlet.cpp:71:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < a.length(); i++)
                  ~~^~~~~~~~~~~~
izlet.cpp: In function 'std::__cxx11::string strmin(std::__cxx11::string, std::__cxx11::string)':
izlet.cpp:84:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < a.length(); i++)
                  ~~^~~~~~~~~~~~
izlet.cpp: In function 'int main()':
izlet.cpp:146:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < g[0].size(); i++) pat[g[0][i]] = 1;
                   ~~^~~~~~~~~~~~~
izlet.cpp:153:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j = 0; j < g[i].size(); j++) pat[g[i][j]] = 2;
                     ~~^~~~~~~~~~~~~
izlet.cpp:182:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      if (a[i][j] == a[i][j + 1] && a[i][j] == ss.size())
                                    ~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 25 / 25
• Subtask 3: 0 / 57