Cod sursa(job #1396447)

Utilizator smallOneAdina Mateescu smallOne Data 22 martie 2015 15:28:22
Problema Stramosi Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.33 kb
#include <cstdio>
#include <iostream>
#include <fstream>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>
#include <sstream>
#include <iomanip>
#include <cmath>
#include <cstdlib>
#include <ctype.h>
#include <cstring>
#include <string>
#include <ctime>
#include <cassert>
#include <utility>

using namespace std;

#define LIM 250005

int dp[20][LIM], n, m, nod, stramos;

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 ", &stramos);
        dp[0][i] = stramos;
    }

    for(int k = 1; k <= 20; k++) {
        for(int i = 1; i <= n; i++) {
            if(dp[k - 1][i] != 0)
                dp[k][i] = dp[k - 1][dp[k - 1][i]];
        }
    }

//    for(int k = 0; k <= 4; k++) {
//        for(int i = 1; i <= n; i++) {
//            cout << dp[k][i] << " ";
//        }
//        cout << "\n";
//    }

    for(int i = 0; i < m; i++) {
        scanf("%d %d", &nod, &stramos);
        int newS = nod;
        for(int k = 0; k < 20; k++) {
            if( (1 << k) & stramos) {
                newS = dp[k][newS];
            }
        }
        printf("%d\n", newS);
    }

	return 0;
}