Cod sursa(job #1253290)

Utilizator atatomirTatomir Alex atatomir Data 1 noiembrie 2014 00:30:00
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.83 kb
#include <iostream>
#include <cstdio>
#include <fstream>

using namespace std;

#define maxN 250005
#define maxLog 25
#define maxLLog 19

int n,m,i,j,q,p,tmp;
int dp[maxLog][maxN];

int main()
{
    /*freopen("stramosi.in","r",stdin);
    freopen("stramosi.out","w",stdout);*/
    ifstream in("stramosi.in");
    ofstream out("stramosi.out");

    //scanf("%ld %ld\n",&n,&m);
    //for(i=1;i<=n;i++) scanf("%ld",&dp[i][0]);
    in >> n >> m;
    for(i=1;i<=n;i++) in >> dp[0][i];

    for(j=1;j<=18;j++)
        for(i=1;i<=n;i++)
            dp[j][i] = dp[j-1][dp[j-1][i]];

    for(;m;m--){
        //scanf("%ld %ld",&q,&p);
        in >> q >> p;

        for(i=0;p;p/=2,i++)
            if(p%2==1)
                q = dp[i][q];

        //printf("%ld\n",q);
        out << q << '\n';
    }

    return 0;
}