Submission #643258

#	Time	Username	Problem	Language	Result	Execution time	Memory
643258		rainboy	Flights (JOI22_flights)	C++17	0 / 100	5 ms	624 KiB

Ali

#include "Ali.h"
#include <string>
#include <vector>

typedef std::vector<int> vi;
typedef std::string str;

namespace {
	const int N = 10000;

	int ej[N][3], eo[N];

	void append(int i, int j) {
		ej[i][eo[i]++] = j;
	}

	str aa; int k, l;

	void dfs(int p, int i) {
		SetID(i, k++);
		if (p != -1)
			aa[l++] = '0';
		for (int o = eo[i]; o--; ) {
			int j = ej[i][o];
			if (j != p)
				dfs(i, j);
		}
		if (p != -1)
			aa[l++] = '1';
	}
}

void Init(int n, vi ii, vi jj) {
	for (int i = 0; i < n; i++)
		eo[i] = 0;
	for (int h = 0; h < n - 1; h++)
		append(ii[h], jj[h]), append(jj[h], ii[h]);
	aa.resize((n - 1) * 2), k = l = 0;
	dfs(-1, 0);
}

str SendA(str bb) {
	return aa;
}

Benjamin

#include "Benjamin.h"
#include <string>
#include <vector>

typedef std::vector<int> vi;
typedef std::string str;

namespace {
	const int N = 10000;

	int dd[N], pp[N], qu[N], n, u, v;
}

str SendB(int n_, int u_, int v_) {
	n = n_, u = u_, v = v_;
	return "00000000001111111111";
}

int Answer(str aa) {
	int cnt;
	cnt = 0;
	pp[0] = -1, dd[0] = 0, qu[cnt++] = 0;
	for (int i = 0, k = 1; i < (n - 1) * 2; i++)
		if (aa[i] == '0') {
			if (k >= n || cnt >= n)
				return -1;
			dd[k] = dd[qu[cnt - 1]] + 1, pp[k] = qu[cnt - 1], qu[cnt++] = k++;
		} else
			cnt--;
	int d = 0;
	while (u != v) {
		if (u == -1 || v == -1)
			return -1;
		d++;
		if (dd[u] > dd[v])
			u = pp[u];
		else
			v = pp[v];
	}
	return d;
}

Compilation message (stderr)

grader_ali.cpp:10:8: warning: '{anonymous}::_randmem' defined but not used [-Wunused-variable]
   10 |   char _randmem[12379];
      |        ^~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 85