int A[2], B[2], C[2];
int px = 0, py = 0;
int a_valid = 0, b_valid = 0, c_valid = 0;
- int field_a, field_b, field_c; // 0: same, 1: opposit
+ int field_a, field_b, field_c; // 0: same, 1: opposite
int total_valid, num_samefield, num_oppfield;
int pos_c, pos_b, n_adj;