Cod sursa(job #2034819)

Utilizator Andrei2000Andrei Mihailescu Andrei2000 Data 8 octombrie 2017 14:52:35
Problema Stramosi Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.72 kb
#include <bits/stdc++.h>
#define nmax 250005
using namespace std;

ifstream fin ("stramosi.in");
ofstream fout ("stramosi.out");

vector<int> G[nmax];
int n,m,d[nmax][25],k=1;
bool ok=1;

int main()
{
    int a,b;
    fin>>n>>m;
    for(int i=1;i<=n;++i){
        fin>>a;
        G[i].push_back(a);
        G[a].push_back(i);
        d[i][1]=a;
    }
    while(ok){
        k*=2;
        ok=0;
        for(int i=1;i<=n;++i)
            ok=d[i][k]=d[d[i][k/2]][k/2];
    }
    /*for(int i=1;i<=m;++i){
        fin>>a>>b;
        while(b){
            int qq=__builtin_ctz(b);
            int q=1<<qq;
            b-=q;
            a=d[a][q];
        }
        fout<<a<<'\n';
    }*/
    return 0;
}