Cod sursa(job #1505822)

Utilizator ArkinyStoica Alex Arkiny Data 19 octombrie 2015 19:52:52
Problema Stramosi Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.59 kb
#include<stdio.h>
#include<queue>

FILE *in, *out;

int N,M;

#define MAX 250001


int D[18][MAX];


int main()
{
	in = fopen("stramosi.in", "r");
	out = fopen("stramosi.out", "w");

	fscanf(in,"%d", &N);

	fscanf(in, "%d", &M);

	for (int i = 1;i <= N;++i)
		fscanf(in,"%d", &D[0][i]);

	int i, j;
	for (i = 1;(1 << i) <= N;++i)
		for (j = 1;j <= N;++j)
			D[i][j] = D[i - 1][D[i - 1][j]];
	int P, Q;
	for (i = 1;i <= M;++i)
	{
		fscanf(in, "%d%d", &Q, &P);
		for (j = 0;P;P >>= 1, ++j)
			if (P & 1)
				Q = D[j][Q];
		fprintf(out, "%d\n", Q);
	}

	
	return 0;
}