oj.uz

Submission #933596

# Submission time Handle Problem Language Result Execution time Memory
933596 2024-02-26T00:55:01 Z vjudge1 Speedrun (RMI21_speedrun) C++17
21 / 100
 27 ms 2188 KB 
// Problem: B - Speedrun
// Contest: Virtual Judge - PES segundo examen de práctica febrero 2024
// URL: https://vjudge.net/contest/612265#problem/B
// Memory Limit: 512 MB
// Time Limit: 3500 ms
// Start: 25-02-2024 15:56:28

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

using ll  = long long;
using ull = unsigned long long;
using pll = pair<ll, ll>;

#define gcd(x, y) __gcd(x, y)
#define mcm(x, y) abs((x) * (y)) / gcd(x, y)
#define all(x)    begin(x), end(x)
#define pb(x)     push_back(x)
#define endl      '\n'

#ifdef DEBUG
int A[] = {0, 1, 2, 3, 3}, B[] = {0, 2, 3, 4, 5};
int N     = 5;
int start = 1;

ll   LEN;
bool hints[500][500] = {{}};
ll   currNode        = start;

void setHintLen(int l) { LEN = l; };
void setHint(int i, int j, bool b) { hints[i][j] = b; };
int  getLength() { return LEN; };
bool getHint(int j) { return hints[currNode][j]; };
bool goTo(int x) {
	for (int i = 1; i < N; i++) {
		ll a = A[i], b = B[i];
		if ((a == currNode && b == x) || (a == x && b == currNode)) {
			currNode = x;
			cout << currNode << ' ';
			return true;
		}
	}
	return false;
};

#else
void setHintLen(int l);
void setHint(int i, int j, bool b);
int  getLength();
bool getHint(int j);
bool goTo(int x);
#endif

void assignHints(int subtask, int N, int A[], int B[]) {
	if (subtask != 1) return;

	setHintLen(N);

	vector<vector<ll>> g(N + 1);

	for (int i = 1; i < N; i++) {
		g[A[i]].pb(B[i]);
		g[B[i]].pb(A[i]);
	}

	for (int i = 1; i <= N; i++)
		for (ll& nei : g[i]) setHint(i, nei, true);
}

void dfs(ll idx, ll p, ll N) {
	for (int i = 1; i <= N; i++) {
		bool x = getHint(i);
		if (!x || i == p) continue;
		goTo(i);
		dfs(i, idx, N);
	}
	if (p != -1) goTo(p);
}

void speedrun(int subtask, int N, int start) {
	if (subtask != 1) return;

	dfs(start, -1, N);
}
#ifdef DEBUG
int main() {
	cout << start << ' ';
	assignHints(1, N, A, B);
	speedrun(1, N, start);

	cout << currNode;
}
#endif

Subtask #1
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 2188 KB Output is correct
2 Correct 22 ms 1804 KB Output is correct
3 Correct 27 ms 1628 KB Output is correct
4 Correct 22 ms 1840 KB Output is correct

Subtask #2
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB setHintLen was never called
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB setHintLen was never called
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB setHintLen was never called
2 Halted 0 ms 0 KB -

Subtask #5
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 368 KB setHintLen was never called
2 Halted 0 ms 0 KB -