Cod sursa(job #2900679)

Utilizator AlexePaulAlexe Paul AlexePaul Data 11 mai 2022 22:30:01
Problema Stramosi Scor 90
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.76 kb
#include <bits/stdc++.h>
		
#define FILE "stramosi"
	
using namespace std;
	
ifstream fin(FILE".in");
ofstream fout(FILE".out");
	
const int maxN = 350000;
const int maxL = 20;
	
int m[maxN+5][maxL+5];
int N,M,x,y;
	
int prelucrare(int x, int y){
	int sol = x;
	int c = 0;
	while(y != 0){
		if(y%2 == 1){
			sol = m[sol][c];
		}
		c++;
		y>>=1;
	}
	return sol;
}
	
int main(){	
	ios::sync_with_stdio(false);
	fin >> N >> M;
	for(int i = 1; i <= N; ++i){
		fin >> m[i][0];
	}
	for(int j = 1; j < maxL; ++j){
		for(int i = 1; i <= N; ++i){
			m[i][j] = m[m[i][j-1]][j-1];
		}
	}
/*
	for(int i = 0 ; i <= N; ++i){	
		for(int j = 0 ; j <= N; ++j)
			cout << m[i][j] << ' ';
		cout << '\n';
	}
*/
	for(int i = 0; i < M; ++i){	
		fin >> x >> y;
		fout << prelucrare(x,y) << '\n';
	}
}