#include "simgrid/s4u.hpp"
#include <string>
#include <xbt/RngStream.h>
-#include <xbt/ex.hpp>
#include <xbt/str.h>
#define MAX_SIMULATION_TIME 1000
extern int nb_bits;
extern int nb_keys;
extern int timeout;
-extern int* powers2;
class HostChord {
RngStream stream_;