Submission #737076

#	Time	Username	Problem	Language	Result	Execution time	Memory
737076		mjhmjh1104	Speedrun (RMI21_speedrun)	C++17	0 / 100	210 ms	868 KiB

speedrun

#include "speedrun.h"
#include <cstdio>
#include <vector>
using namespace std;

int n;
vector<int> adj[1006];
bool visited[1006];

void assign(int x, int y, int z) {
    for (int i = 0; i < 10; i++) setHint(x + 1, y * 10 + i + 1, z & 1 << i ? true : false);
}

int get(int y) {
    int ret = 0;
    for (int i = 0; i < 10; i++) ret |= getHint(y * 10 + i + 1) << i;
    return ret;
}

void _dfs(int x, int prev = -1) {
    int pv = -1;
    for (auto &i: adj[x]) if (i != prev) {
        if (pv == -1) assign(x, 0, i);
        else assign(pv, 1, i);
        pv = i;
        _dfs(i, x);
    }
    if (pv == -1) assign(x, 0, 1023);
    else assign(pv, 1, x);
}

void assignHints(int subtask, int n, int a[], int b[]) {
    ::n = n;
    for (int i = 1; i < n; i++) {
        adj[a[i] - 1].push_back(b[i] - 1);
        adj[b[i] - 1].push_back(a[i] - 1);
    }
    setHintLen(20);
    assign(0, 1, 1023);
    _dfs(0);
}

void dfs(int x, int prev = -1) {
    visited[x] = true;
    int child = get(0);
    if (child != 1023 && !visited[child]) {
        goTo(child + 1);
        dfs(child);
        goTo(x + 1);
    }
    int nx = get(1);
    if (nx != 1023 && !visited[nx]) {
        goTo(nx + 1);
        dfs(nx);
        goTo(x + 1);
    }
}

void speedrun(int subtask, int n, int st) {
    ::n = n;
    dfs(st - 1);
}

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