#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<stdint.h>
#include<stdbool.h>
#include<tgmath.h>
#include<sys/queue.h>
#include<time.h>
#define ll long long
#define min(a, b) ((a) > (b) ? (b) : (a))
#define max(a, b) ((a) > (b) ? (a) : (b))
#define miin(a, b, c) min((a), min((b), (c)))
#define maax(a, b, c) max((a), max((b), (c)))
#define mod 1000000007


ll n, k;
int a[222222], b[222222];

main(){
    scanf("%lld%lld", &n, &k);
    for(int i=0; i<n; i++){
        scanf("%d", &a[i]);
        a[i]--;
        b[i] = -1;
    }
    int x=0, y=1;
    while(k){
        if(b[x] > 0){
            k %= (y - b[x]);
            if(k==0) break;
        }
        b[x] = y;
        x = a[x];
        y++;
        k--;
    }
    printf("%d\n", ++x);
    return 0;
}