int main(){
int i, cnt = 0;;
inverse_pair(A, 0, 9, &cnt, T);
printf("%d\n", cnt);
while(1);
return 0;
}
void inverse_pair(int* A, int x, int y, int* cnt, int* T) {
if(y-x > 1){
int m = x + (y-x)/2;
int p = x, q = m, i = x;
inverse_pair(A, x, m, cnt, T);
inverse_pair(A, m, y, cnt, T);
while(p < m || q < y) {
if(q >= y || (p < m && A[p] <= A[q]))
T[i++] = A[p++];
else {
T[i++] = A[q++];
*cnt += m-p;
}
}
for(i = x; i < y; i++) A[i] = T[i];
}
}
void thread_code(void *arg) {
int cpuid = (int)arg;
set_affinity(cpuid);
int core_id = sched_getcpu();
double X = logistic_map (X0, a, iters);
if (core_id == 0) { X = X + errta; }
#if DEBUG
fprintf(stdout, "core %d at step 1 get result: %.16f \n", core_id, X);
#endif
double Y = inverse_pair(X, A, M);
#if DEBUG
fprintf(stdout, "core %d at step 2 get result: %.16f \n", core_id, Y);
#endif
double Z = logistic_map (Y, a, iters);
fprintf(stdout, "core %d get result: %.16f \n", core_id, Z);
pthread_exit(1);
}