Cod sursa(job #1899447)

Utilizator VladTiberiuMihailescu Vlad Tiberiu VladTiberiu Data 2 martie 2017 19:07:34
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.86 kb
#include <cstdio>
#include <cstring>
#include <vector>
#include <queue>
#include <set>
#include <stack>
#include <algorithm>
#include <map>
#include <iomanip>

using namespace std;

const int NMax = 250001;

int n,m,x,y;
int viz[NMax];
int T2[20][NMax];

int main()
{
    freopen("stramosi.in","r",stdin);
    freopen("stramosi.out","w",stdout);
    scanf("%d%d",&n,&m);
    for(int i = 1; i <= n; ++i){
        scanf("%d",&T2[0][i]);
    }
    for(int i = 1; i <= n; ++i){
        for(int j = 1; (1<<j) <= n; ++j){
            T2[j][i] = T2[j - 1][T2[j - 1][i]];
        }
    }
    for(int i = 1; i <= m; ++i){
        scanf("%d%d",&x,&y);

        for(int j = 0; (1 << j) <= n; ++j){
            if(y & (1<<j)){
                y -= j;
                x = T2[j][x];
            }
        }
        printf("%d\n",x);
    }
    return 0;
}