Cod sursa(job #1373866)

Utilizator ignadariusIgna Darius ignadarius Data 4 martie 2015 21:02:40
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.54 kb
#include <iostream>
#include <fstream>

using namespace std;
ifstream f("stramosi.in");
ofstream g("stramosi.out");

int n,m,x,y,dp[20][250005];
int main()
{
    f>>n>>m;
    for(int i=1; i<=n; i++)
        f>>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++)
    {
        f>>x>>y;
        for(int i=0; (1<<i)<=y; i++)
        {
            if(y&(1<<i))x=dp[i][x];
            if(x==0)break;
        }
        g<<x<<"\n";

    }
return 0;
}