targil

#include <stdio.h>
#include <stdlib.h>
#include <math.h>


int naive_strategy(int n)
{
int k, rest;

k=rand()%(n/2)+1;
rest= n-k ;

return rest;
}


int smallest_higher_power2(int n)
{
  int i=1;
while (pow (2.0,i) < n)
   i=i+1;
return i;
}


int smart_strategy(int n)
{
int a, rest;
a=smallest_higher_power2(n);
    if (n== (pow(2.0,a)-1))
rest= naive_strategy(n);
    else rest= pow (2.0,a-1) -1;
return rest;
}


int play(int s1, int s2, int k, int start)
{

while  (k>0) {

      if (start== 1) {
if (s1 == 1)  k=naive_strategy(k);
else k= smart_strategy (k); start=2;
}
     else {
if (s2 == 1) k=naive_strategy(k);
else k= smart_strategy (k); start=1;
}

}

return start;
}

int compare(int s1, int s2, int k, int numOfPlays
{
int start, i, win, x=0;

for(i=1; i<=numOfPlays; i++) {
   start=rand()%2+1;
   win= play(s1, s2, k, start);
         if (win == 1) x++;
           }

return x;
}


int main()
{
    int s1, s2, k, n, temp;
    printf("enter parameters \n");
    scanf("%d%d%d%d",&s1, &s2, &k ,&n);
    temp = compare(s1, s2, k, n);
    printf("the number of win is%d \n", temp);
return 0;
}