#include <bits/stdc++.h>
using namespace std;
template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl
using ll = long long;
const int maxn = 505;
int n; ll k;
int g[maxn][maxn];
int dp[maxn][maxn];
int main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>>n>>k;
for (int i=1; i<=n; i++) {
for (int j=1; j<=n; j++) {
cin>>g[i][j];
}
}
if (k==1) out(1);
assert(k>=2);
memset(dp, -1, sizeof(dp));
vector<int> stk = {-1, 1, 2};
int idx = 2;
while (idx<k) {
int p = stk[idx-1];
int at = stk[idx];
assert(p!=at);
if (dp[p][at] == -1) {
dp[p][at] = idx;
stk.push_back(g[at][p]);
idx++;
continue;
}
//cout<<"HERE"<<endl;
assert(k>idx);
ll rem = k-idx-1;
ll len = idx-dp[p][at];
rem %= len;
ll x = dp[p][at]+1+rem;
out(stk[x]);
}
cout<<stk.back()<<endl;
return 0;
}
