Cod sursa(job #1652237)

Utilizator VladTiberiuMihailescu Vlad Tiberiu VladTiberiu Data 14 martie 2016 19:51:10
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.85 kb
#include <cstdio>
#include <vector>
#include <queue>
#include <set>
#include <stack>
#include <algorithm>
#include <cmath>
#include <iomanip>
#include <cstring>

#define NMax 250005
#define INF 0x3f3f3f3f
using namespace std;

int n,q,p,w;
int a[19][NMax];

int main()
{
    freopen("stramosi.in","r",stdin);
    freopen("stramosi.out","w",stdout);
    scanf("%d%d",&n,&q);

    for(int i = 1; i <= n; ++i){
        scanf("%d",&a[0][i]);
    }
    for(int i = 1; (1<<i) <= n; ++i){
        for(int j = 1; j <= n; ++j){
            a[i][j] = a[i - 1][a[i - 1][j]];
        }
    }
    for(int count = 1; count <= q; ++count){
        scanf("%d%d",&p,&w);
        for(int i = 0; (1<<i) <= w; ++i){
            if((1<<i) & w){
                p = a[i][p];
            }
        }
        printf("%d\n",p);
    }
    return 0;
}