Cod sursa(job #2515655)

Utilizator darkeagleDaniel Popescu darkeagle Data 29 decembrie 2019 02:04:39
Problema Stramosi Scor 80
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.81 kb
#include <iostream>
#include<cstdio>
#define nmax 250001
FILE * f=fopen("stramosi.in","r");
FILE * g=fopen("stramosi.out","w");

using namespace std;
int b[17][nmax];

int main()
{
    int n,m,i,x,y,k=1;
    fscanf(f,"%d%d",&n,&m);
    for(i=1;i<=n;i++)
    {fscanf(f,"%d",&b[0][i]);

    }

int s=0,j;
do
{
    k=1<<s;

    s++;
}while(k<=n);

s=s-2;
for(i=1;i<=s;i++)
{
    for(j=1;j<=n;j++)
    {
        b[i][j]=b[i-1][b[i-1][j]];
    }
}
for(i=1;i<=m;i++)
    {
    s=0;
        fscanf(f,"%d%d",&x,&y);




        while(y>0)
        { s=0;
        k=1;
        while(k<=y)
        {
            s++;
            k=1<<s;

        }
        s--;
        k=k/2;

        x=b[s][x];
        y=y-k;


        }

   fprintf(g,"%d\n",x);

    }
    return 0;
}