Submission #765174

#	Time	Username	Problem	Language	Result	Execution time	Memory
765174		vjudge1	Speedrun (RMI21_speedrun)	C++17	29 / 100	3518 ms	89176 KiB

speedrun

#include <algorithm>
#include <iostream>
#include <iomanip>
#include <bitset>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include "speedrun.h"

// Akhmet Issa

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define ent "\n"

const int maxn = 1e6 + 100;
const ll INF = (ll)2e18;
const int inf = (ll)2e9;
const int maxl = 20;
const int MOD = 1e9 + 7;

int S;
vector<int> g[maxn];
int used[maxn];

void assignHints(int subtask, int n, int A [], int B []){
    int r = 1;
    for(int i = 1; i < n; i++){
        g[A[i]].push_back(B[i]);
        g[B[i]].push_back(A[i]);
    }
    if(subtask == 2){
        setHintLen(20);
        for(int i = 1; i <= n; i++){
            if(g[i].size() > 1) r = i;
        }
        for(int i = 1; i <= n; i++){
            if(i == r) continue;
            for(int j = 1; j <= 20; j++){
                if(r & (1<<(j-1))) setHint(i, j, 1);
            }
        }
    } else if(subtask == 1){
        setHintLen(n);
        for(int i = 1; i <= n; i++){
            for(int to: g[i]){
                setHint(i, to, 1);
            }
        }
    } else if(subtask == 3){
        setHintLen(20);
        for(int i = 1; i <= n; i++){
            int p = 1;
            for(int to: g[i]){
                for(int j = 0; j < 10; j++){
                    if(to & (1<<j)){
                        setHint(i, p, 1);
                    }
                    p++;
                }
            }
        }
    }
}

void dfs(int subtask, int v, int pr, int n){
    if(subtask == 2){
        used[v] = 1;
        int num = 0;
        for(int i = 1; i <= 20; i++){
            if(getHint(i)) num += (1<<(i-1));
        }
        if(!num){
            for(int to = 1; to <= n; to++){
                if(!used[to]){
                    goTo(to);
                    dfs(subtask, to, v, n);
                }
            }
        } else{
            if(!used[num]){
                goTo(num);
                dfs(subtask, num, v, n);
            }
        }
        if(pr) goTo(pr);
    } else if(subtask == 1){
        used[v] = 1;
        for(int to = 1; to <= n; to++){
            if(getHint(to) && !used[to]){
                goTo(to);
                dfs(subtask, to, v, n);
            }
        }
        if(pr) goTo(pr);
    } else if(subtask == 3){
        for(int i = 1; i <= 11; i += 10){
            int to = 0;
            for(int j = 0; j < 10; j++){
                if(getHint(j + i)) to |= (1<<j);
            }
            if(!used[to]){
                goTo(to);
                dfs(subtask, to, v, n);
            }
        }
        if(pr) goTo(pr);
    }
}

void speedrun(int subtask, int n, int start){
    if(subtask == 2){
        dfs(subtask, start, 0, n);
    } else if(subtask == 1){
        dfs(subtask, start, 0, n);
    } else if(subtask == 3){
        dfs(subtask, start, 0, n);
    }
}

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