Submission #869253

#	Time	Username	Problem	Language	Result	Execution time	Memory
869253		MinaRagy06	Speedrun (RMI21_speedrun)	C++17	48 / 100	51 ms	1824 KiB

speedrun

#include <bits/stdc++.h>
#ifdef MINA
#include "grader.cpp"
#endif
#include "speedrun.h"
using namespace std;
typedef int64_t ll;

void assignHints(int subtask, int n, int a[], int b[]) {
	if (subtask == 1) {
		vector<int> adj[n + 1];
		for (int i = 1; i < n; i++) {
			adj[a[i]].push_back(b[i]);
			adj[b[i]].push_back(a[i]);
		}
		setHintLen(n);
		for (int i = 1; i <= n; i++) {
			for (auto nxt : adj[i]) {
				setHint(i, nxt, 1);
			}
		}
	} else if (subtask == 2) {
		vector<int> adj[n + 1];
		for (int i = 1; i < n; i++) {
			adj[a[i]].push_back(b[i]);
			adj[b[i]].push_back(a[i]);
		}
		setHintLen(11);
		for (int i = 1; i <= n; i++) {
			if (adj[i].size() == 1) {
				int v = adj[i][0];
				for (int b = 0; b < 10; b++) {
					if ((v >> b) & 1) {
						setHint(i, b + 1, 1);
					}
				}
			} else {
				setHint(i, 11, 1);
			}
		}
	} else if (subtask == 3) {
		vector<int> adj[n + 1];
		for (int i = 1; i < n; i++) {
			adj[a[i]].push_back(b[i]);
			adj[b[i]].push_back(a[i]);
		}
		setHintLen(20);
		for (int i = 1; i <= n; i++) {
			for (int j = 0; j < adj[i].size(); j++) {
				int v = adj[i][j];
				for (int b = 0; b < 10; b++) {
					if ((v >> b) & 1) {
						setHint(i, 10 * j + b + 1, 1);
					}
				}
			}
		}
	}
}
void dfs3(int i, int par, int n) {
	for (int j = 0; j < 2; j++) {
		int v = 0;
		for (int b = 0; b < 10; b++) {
			if (getHint(10 * j + b + 1)) {
				v |= 1 << b;
			}
		}
		if (v && v != par) {
			goTo(v);
			dfs3(v, i, n);
		}
	}
	if (par) goTo(par);
}
void dfs(int i, int par, int n) {
	for (int nxt = 1; nxt <= n; nxt++) {
		if (nxt == par) continue;
		if (getHint(nxt)) {
			goTo(nxt);
			dfs(nxt, i, n);
		}
	}
	if (par) goTo(par);
}
void dfs2(int i, int par, int n) {
	if (getHint(11)) {
		for (int nxt = 1; nxt <= n; nxt++) {
			if (nxt == par || nxt == i) continue;
			goTo(nxt);
			dfs2(nxt, i, n);
		}
		if (par) goTo(par);
	} else {
		int nxt = 0;
		for (int b = 0; b < 10; b++) {
			if (getHint(b + 1)) nxt |= 1 << b;
		}
		goTo(nxt);
		if (nxt != par) {
			dfs2(nxt, i, n);
		}
	}
}
void speedrun(int subtask, int n, int start) {
	if (subtask == 1) {
		dfs(start, 0, n);
	} else if (subtask == 2) {
		dfs2(start, 0, n);
	} else if (subtask == 3) {
		dfs3(start, 0, n);
	}
}

Compilation message (stderr)

speedrun.cpp: In function 'void assignHints(int, int, int*, int*)':
speedrun.cpp:49:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |    for (int j = 0; j < adj[i].size(); j++) {
      |                    ~~^~~~~~~~~~~~~~~

• Subtask 1: 21 / 21
• Subtask 2: 8 / 8
• Subtask 3: 19 / 19
• Subtask 4: 0 / 12
• Subtask 5: 0 / 40