#include <stdio.h>
#include <stdint.h>

int64_t f_s_rca6(int64_t a, int64_t b){
  uint8_t out = 0;
  uint8_t a_0 = 0;
  uint8_t a_1 = 0;
  uint8_t a_2 = 0;
  uint8_t a_3 = 0;
  uint8_t a_4 = 0;
  uint8_t a_5 = 0;
  uint8_t b_0 = 0;
  uint8_t b_1 = 0;
  uint8_t b_2 = 0;
  uint8_t b_3 = 0;
  uint8_t b_4 = 0;
  uint8_t b_5 = 0;
  uint8_t f_s_rca6_ha_a_0 = 0;
  uint8_t f_s_rca6_ha_b_0 = 0;
  uint8_t f_s_rca6_ha_y0 = 0;
  uint8_t f_s_rca6_ha_y1 = 0;
  uint8_t f_s_rca6_fa1_a_1 = 0;
  uint8_t f_s_rca6_fa1_b_1 = 0;
  uint8_t f_s_rca6_fa1_y0 = 0;
  uint8_t f_s_rca6_fa1_y1 = 0;
  uint8_t f_s_rca6_fa1_f_s_rca6_ha_y1 = 0;
  uint8_t f_s_rca6_fa1_y2 = 0;
  uint8_t f_s_rca6_fa1_y3 = 0;
  uint8_t f_s_rca6_fa1_y4 = 0;
  uint8_t f_s_rca6_fa2_a_2 = 0;
  uint8_t f_s_rca6_fa2_b_2 = 0;
  uint8_t f_s_rca6_fa2_y0 = 0;
  uint8_t f_s_rca6_fa2_y1 = 0;
  uint8_t f_s_rca6_fa2_f_s_rca6_fa1_y4 = 0;
  uint8_t f_s_rca6_fa2_y2 = 0;
  uint8_t f_s_rca6_fa2_y3 = 0;
  uint8_t f_s_rca6_fa2_y4 = 0;
  uint8_t f_s_rca6_fa3_a_3 = 0;
  uint8_t f_s_rca6_fa3_b_3 = 0;
  uint8_t f_s_rca6_fa3_y0 = 0;
  uint8_t f_s_rca6_fa3_y1 = 0;
  uint8_t f_s_rca6_fa3_f_s_rca6_fa2_y4 = 0;
  uint8_t f_s_rca6_fa3_y2 = 0;
  uint8_t f_s_rca6_fa3_y3 = 0;
  uint8_t f_s_rca6_fa3_y4 = 0;
  uint8_t f_s_rca6_fa4_a_4 = 0;
  uint8_t f_s_rca6_fa4_b_4 = 0;
  uint8_t f_s_rca6_fa4_y0 = 0;
  uint8_t f_s_rca6_fa4_y1 = 0;
  uint8_t f_s_rca6_fa4_f_s_rca6_fa3_y4 = 0;
  uint8_t f_s_rca6_fa4_y2 = 0;
  uint8_t f_s_rca6_fa4_y3 = 0;
  uint8_t f_s_rca6_fa4_y4 = 0;
  uint8_t f_s_rca6_fa5_a_5 = 0;
  uint8_t f_s_rca6_fa5_b_5 = 0;
  uint8_t f_s_rca6_fa5_y0 = 0;
  uint8_t f_s_rca6_fa5_y1 = 0;
  uint8_t f_s_rca6_fa5_f_s_rca6_fa4_y4 = 0;
  uint8_t f_s_rca6_fa5_y2 = 0;
  uint8_t f_s_rca6_fa5_y3 = 0;
  uint8_t f_s_rca6_fa5_y4 = 0;
  uint8_t f_s_rca6_xor0_a_5 = 0;
  uint8_t f_s_rca6_xor0_b_5 = 0;
  uint8_t f_s_rca6_xor0_y0 = 0;
  uint8_t f_s_rca6_xor1_f_s_rca6_xor0_y0 = 0;
  uint8_t f_s_rca6_xor1_f_s_rca6_fa5_y4 = 0;
  uint8_t f_s_rca6_xor1_y0 = 0;

  a_0 = ((a >> 0) & 0x01);
  a_1 = ((a >> 1) & 0x01);
  a_2 = ((a >> 2) & 0x01);
  a_3 = ((a >> 3) & 0x01);
  a_4 = ((a >> 4) & 0x01);
  a_5 = ((a >> 5) & 0x01);
  b_0 = ((b >> 0) & 0x01);
  b_1 = ((b >> 1) & 0x01);
  b_2 = ((b >> 2) & 0x01);
  b_3 = ((b >> 3) & 0x01);
  b_4 = ((b >> 4) & 0x01);
  b_5 = ((b >> 5) & 0x01);
  f_s_rca6_ha_a_0 = ((a_0 >> 0) & 0x01);
  f_s_rca6_ha_b_0 = ((b_0 >> 0) & 0x01);
  f_s_rca6_ha_y0 = f_s_rca6_ha_a_0 ^ f_s_rca6_ha_b_0;
  f_s_rca6_ha_y1 = f_s_rca6_ha_a_0 & f_s_rca6_ha_b_0;
  f_s_rca6_fa1_a_1 = ((a_1 >> 0) & 0x01);
  f_s_rca6_fa1_b_1 = ((b_1 >> 0) & 0x01);
  f_s_rca6_fa1_f_s_rca6_ha_y1 = ((f_s_rca6_ha_y1 >> 0) & 0x01);
  f_s_rca6_fa1_y0 = f_s_rca6_fa1_a_1 ^ f_s_rca6_fa1_b_1;
  f_s_rca6_fa1_y1 = f_s_rca6_fa1_a_1 & f_s_rca6_fa1_b_1;
  f_s_rca6_fa1_y2 = f_s_rca6_fa1_y0 ^ f_s_rca6_fa1_f_s_rca6_ha_y1;
  f_s_rca6_fa1_y3 = f_s_rca6_fa1_y0 & f_s_rca6_fa1_f_s_rca6_ha_y1;
  f_s_rca6_fa1_y4 = f_s_rca6_fa1_y1 | f_s_rca6_fa1_y3;
  f_s_rca6_fa2_a_2 = ((a_2 >> 0) & 0x01);
  f_s_rca6_fa2_b_2 = ((b_2 >> 0) & 0x01);
  f_s_rca6_fa2_f_s_rca6_fa1_y4 = ((f_s_rca6_fa1_y4 >> 0) & 0x01);
  f_s_rca6_fa2_y0 = f_s_rca6_fa2_a_2 ^ f_s_rca6_fa2_b_2;
  f_s_rca6_fa2_y1 = f_s_rca6_fa2_a_2 & f_s_rca6_fa2_b_2;
  f_s_rca6_fa2_y2 = f_s_rca6_fa2_y0 ^ f_s_rca6_fa2_f_s_rca6_fa1_y4;
  f_s_rca6_fa2_y3 = f_s_rca6_fa2_y0 & f_s_rca6_fa2_f_s_rca6_fa1_y4;
  f_s_rca6_fa2_y4 = f_s_rca6_fa2_y1 | f_s_rca6_fa2_y3;
  f_s_rca6_fa3_a_3 = ((a_3 >> 0) & 0x01);
  f_s_rca6_fa3_b_3 = ((b_3 >> 0) & 0x01);
  f_s_rca6_fa3_f_s_rca6_fa2_y4 = ((f_s_rca6_fa2_y4 >> 0) & 0x01);
  f_s_rca6_fa3_y0 = f_s_rca6_fa3_a_3 ^ f_s_rca6_fa3_b_3;
  f_s_rca6_fa3_y1 = f_s_rca6_fa3_a_3 & f_s_rca6_fa3_b_3;
  f_s_rca6_fa3_y2 = f_s_rca6_fa3_y0 ^ f_s_rca6_fa3_f_s_rca6_fa2_y4;
  f_s_rca6_fa3_y3 = f_s_rca6_fa3_y0 & f_s_rca6_fa3_f_s_rca6_fa2_y4;
  f_s_rca6_fa3_y4 = f_s_rca6_fa3_y1 | f_s_rca6_fa3_y3;
  f_s_rca6_fa4_a_4 = ((a_4 >> 0) & 0x01);
  f_s_rca6_fa4_b_4 = ((b_4 >> 0) & 0x01);
  f_s_rca6_fa4_f_s_rca6_fa3_y4 = ((f_s_rca6_fa3_y4 >> 0) & 0x01);
  f_s_rca6_fa4_y0 = f_s_rca6_fa4_a_4 ^ f_s_rca6_fa4_b_4;
  f_s_rca6_fa4_y1 = f_s_rca6_fa4_a_4 & f_s_rca6_fa4_b_4;
  f_s_rca6_fa4_y2 = f_s_rca6_fa4_y0 ^ f_s_rca6_fa4_f_s_rca6_fa3_y4;
  f_s_rca6_fa4_y3 = f_s_rca6_fa4_y0 & f_s_rca6_fa4_f_s_rca6_fa3_y4;
  f_s_rca6_fa4_y4 = f_s_rca6_fa4_y1 | f_s_rca6_fa4_y3;
  f_s_rca6_fa5_a_5 = ((a_5 >> 0) & 0x01);
  f_s_rca6_fa5_b_5 = ((b_5 >> 0) & 0x01);
  f_s_rca6_fa5_f_s_rca6_fa4_y4 = ((f_s_rca6_fa4_y4 >> 0) & 0x01);
  f_s_rca6_fa5_y0 = f_s_rca6_fa5_a_5 ^ f_s_rca6_fa5_b_5;
  f_s_rca6_fa5_y1 = f_s_rca6_fa5_a_5 & f_s_rca6_fa5_b_5;
  f_s_rca6_fa5_y2 = f_s_rca6_fa5_y0 ^ f_s_rca6_fa5_f_s_rca6_fa4_y4;
  f_s_rca6_fa5_y3 = f_s_rca6_fa5_y0 & f_s_rca6_fa5_f_s_rca6_fa4_y4;
  f_s_rca6_fa5_y4 = f_s_rca6_fa5_y1 | f_s_rca6_fa5_y3;
  f_s_rca6_xor0_a_5 = a_5;
  f_s_rca6_xor0_b_5 = b_5;
  f_s_rca6_xor0_y0 = f_s_rca6_xor0_a_5 ^ f_s_rca6_xor0_b_5;
  f_s_rca6_xor1_f_s_rca6_xor0_y0 = f_s_rca6_xor0_y0;
  f_s_rca6_xor1_f_s_rca6_fa5_y4 = f_s_rca6_fa5_y4;
  f_s_rca6_xor1_y0 = f_s_rca6_xor1_f_s_rca6_xor0_y0 ^ f_s_rca6_xor1_f_s_rca6_fa5_y4;

  out |= (f_s_rca6_ha_y0 & 0x01) << 0;
  out |= (f_s_rca6_fa1_y2 & 0x01) << 1;
  out |= (f_s_rca6_fa2_y2 & 0x01) << 2;
  out |= (f_s_rca6_fa3_y2 & 0x01) << 3;
  out |= (f_s_rca6_fa4_y2 & 0x01) << 4;
  out |= (f_s_rca6_fa5_y2 & 0x01) << 5;
  out |= (f_s_rca6_xor1_y0 & 0x01) << 6;
  return out;
}

#include <assert.h>
int main(){
  int result = 0;
  for (int i = -32; i < 32; i++){
    for (int j = -32; j < 32; j++){
      result = i + j;
      
      // Calculating 2's complement in case of negative sum
      if (result < 0) {
        result = 128 + result;  
      }

      assert(result == f_s_rca6(i,j));
    }
  }
  return 0;
}