Pagini recente » Cod sursa (job #1444972) | Cod sursa (job #635675) | Cod sursa (job #3277696) | Cod sursa (job #426654) | Cod sursa (job #2890215)
#include <cstdio>
#include <algorithm>
#include <cstring>
#include <vector>
using namespace std;
typedef long long ll;
const int NMAX = 250005;
const int LMAX = 18;
int dp[LMAX][NMAX];
int main(){
freopen("stramosi.in", "r", stdin);
freopen("stramosi.out", "w", stdout);
int n,q;
scanf("%d%d", &n, &q);
dp[0][1] = 0;
for(int i=1; i<=n; ++i)
scanf("%d", &dp[0][i]);
for(int l=1; l<LMAX; ++l)
for(int i=1; i<=n; ++i)
dp[l][i] = dp[l-1][dp[l-1][i]];
int x,k;
for(; q; q--){
scanf("%d%d", &x, &k);
for(int l=0; l<LMAX; ++l)
if(k&(1<<l)){
if(x == 0) break;
x = dp[l][x];
}
if(x)
printf("%d\n", x);
else
printf("0\n");
}
return 0;
}