#include<stdio.h>

/**************************/
/* De'finitions du groupe */
/**************************/


typedef struct complexe {
  int re;
  int im;
} Complexe;

Complexe neutre = {1 , 0};

Complexe mult(Complexe x,Complexe y)
{
  Complexe r;

  r.re = x.re * y.re - x.im * y.im;
  r.im = x.re * y.im + x.im * y.re;
  return r;
}

Complexe carre(Complexe x)
{
  return mult(x,x);
}

/***********************/
/* Plus efficace       */
/**********************/
/*
Complexe carre(Complexe x)
{
  Complexe r;

  r.re = x.re * x.re - x.im * x.im;
  r.im = 2 * x.re * x.im
  return r;
}
*/

Complexe read()
{
  Complexe r;

  scanf("%d %d",&(r.re),&(r.im));
  return r;
}

void print(Complexe x)
{
  printf("%d",x.re);
  if (x.im > 0) {
    printf("+%di",x.im);
  } else if (x.im < 0) {
    printf("-%di",-x.im);
  }
}


/* Calcul des puissances, cas de la base deux */
typedef Complexe Elem;

Elem puissance(Elem x, int n)
{
  int i;
  Elem t,r;

  t = x;
  r = neutre;

  for (i=n ; i > 0 ; i /= 2) {
    if (i%2 == 1) {
      r = mult(r,t);
    }
    t = carre(t);
  }
  return r;
}


void main(void)
{
  int n;
  Elem x;
  
  
  for(;;) {
     printf("Tapez un complexe :\n");
     x = read();
     printf("Tapez un entier :\n");
     scanf("%d",&n);
     print(puissance(x,n));
     printf("\n\n");
  }
}