Cod sursa(job #1897175)

Utilizator MithrilBratu Andrei Mithril Data 1 martie 2017 11:04:16
Problema Stramosi Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.64 kb
#include <bits/stdc++.h>

using namespace std;
ifstream fin("stramosi.in");
ofstream fout("stramosi.out");
int n,m,nod,lev;
const int LOGMAX = 18;
const int NMAX = 250001;
int dp[LOGMAX][NMAX];

int main()
{
    fin>>n>>m;
    for(int i=1;i<=n;i++) {
        fin>>dp[0][i];
    }
    for(int i=1;(1<<i)<=n;i++) {
        for(int j=1;j<=n;j++) {
            dp[i][j]=dp[i-1][dp[i-1][j]];
        }
    }
    for(int i=1;i<=m;i++) {
        fin>>nod>>lev;
        for(int j=0;j<=lev;j++)
            if((1<<j)&lev)
                nod=dp[j][nod];
        fout<<nod<<'\n';
    }
    fin.close();
    fout.close();
    return 0;
}