Submission #644839

#	Time	Username	Problem	Language	Result	Execution time	Memory
644839		PanTkd	Speedrun (RMI21_speedrun)	C++14	0 / 100	70 ms	832 KiB

speedrun

#include "speedrun.h"
#include <iostream>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <limits>
#include <list>
#include <cstring>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <unordered_map>

using namespace std;

typedef int ll;
typedef vector<ll> vi;
typedef pair<ll,ll> ii;
#ifdef px
    #define p(x) cerr<<#x<<' '<<x<<endl;
#else
    #define p(x) {}
#endif
#define F first
#define S second
#define sz size
#define ls s,m,idx<<1
#define rs m+1,e,idx<<1|1
const ll MOD=ll(1e9)+7;
const ll MAXN=2*ll(1e6);

ll freq[20001];
ll arxi;

vector<vi> Adj;
vi Par,Son;
void dfs(ll s,ll p=-1){
    for(auto x:Adj[s]){
        if(x!=p){
            Par[x]=s;
            Son[s]=x;
            dfs(x,s);
        }
    }
}
void assignHints(int subtask, int N, int A[], int B[]) { 
    setHintLen(20);
    Adj.assign(N+1,vi());
    Par.assign(N+1,0);
    Son.assign(N+1,0);
    for(ll i=1;i<N;i++){
        freq[A[i]]++;
        freq[B[i]]++;
        Adj[A[i]].push_back(B[i]);
        Adj[B[i]].push_back(A[i]);
    }
    for(ll i=1;i<=N;i++){
        if(freq[i]==1){
            arxi=i;
            break;
        }
    }
    p(arxi);
    Par[arxi]=arxi;
    Son[arxi]=arxi;
    ll curr=arxi;
    dfs(arxi,arxi);
    
    for(ll i=1;i<=N;i++){
        for(ll j=0;j<10;j++){
            if((1<<j)&Son[i])
                setHint(i,j+1,1);
            else if((1<<j)&Par[i]){
                setHint(i,j+11,1);
            }
        }
    }
}
ll l;


void speedrun(int subtask, int N, int start) { /* your solution here */
    if(start==arxi){
        ll curr=start;
        for(ll i=1;i<N;i++){
            curr=Son[curr];
            goTo(curr);
        }
    }
    else{
        ll curr=start;
        while(curr!=arxi){
            curr=Par[curr];
            goTo(curr);
        }

        for(ll i=1;i<N;i++){
            curr=Son[curr];
            goTo(curr);
        }
    }
}

Compilation message (stderr)

speedrun.cpp: In function 'void assignHints(int, int, int*, int*)':
speedrun.cpp:73:8: warning: unused variable 'curr' [-Wunused-variable]
   73 |     ll curr=arxi;
      |        ^~~~

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