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#include <fstream>#include <algorithm>using namespace std;ifstream fin("salesman.in");ofstream fout("salesman.out");const int MAX_N = 100000, INT_MIN = 1<<31;struct Tnode{ int a, id;} a[MAX_N

#include <fstream>using namespace std;ifstream fin("stone.in");ofstream fout("stone.out");int N, a[100000];int Binary_Search(int first, int last){ if (first == last) return first;

#include <fstream>using namespace std;ifstream fin("message.in");ofstream fout("message.out");const int MAX_n=200000;int T[MAX_n], a[MAX_n];int find_ancestor(int root){ if (a[root] == root)